Amino Acid Residues Modulating the Activities of Staphylococcal Glutamyl Title Endopeptidases

Total Page:16

File Type:pdf, Size:1020Kb

Amino Acid Residues Modulating the Activities of Staphylococcal Glutamyl Title Endopeptidases NAOSITE: Nagasaki University's Academic Output SITE Amino acid residues modulating the activities of staphylococcal glutamyl Title endopeptidases. Ono, Toshio; Ohara-Nemoto, Yuko; Shimoyama, Yu; Okawara, Hisami; Author(s) Kobayakawa, Takeshi; Baba, Tomomi T; Kimura, Shigenobu; Nemoto, Takayuki K Citation Biological chemistry, 391(10), pp.1221-1232; 2010 Issue Date 2010-10 URL http://hdl.handle.net/10069/24535 Right © 2010 by Walter de Gruyter Berlin New York 2010. This document is downloaded at: 2020-09-18T02:19:01Z http://naosite.lb.nagasaki-u.ac.jp BIOLOGICAL CHEMISTRY Founded in 1877 by Felix Hoppe-Seyler as EDITOR-IN-CHIEF Zeitschriftfur PhysioLogische Chemie H. Sies, DUsseldorf Felix Hoppe-Seyler (1825-1895) was a pioneer of biochemistry, EXECUTIVE EDITORS remembered not only for hi s di scovery of hemoglobin and F. U. Hart!, Martinsried hi s contributions to the chemical characterization of many other S. LudlVig, MUnster biological compounds and processes but also for having been the K. Sandhoff, Bonn mentor of Friedrich Miescher and Albrecht Kossel. In hi s preface B. Turk, Ljubljana to the first issue of Zeitschrift fur Physiologische Chemie, A. Wittinghofer, Dortmund Feli x Hoppe-Seyler coined the term Biochemistry (,Biochemie' ) for the then newly emerging di scipline. ASSOCIATE EDITORS (GBM STUDY GROUPS) C.-M. Becker, Erlangen F. Bier, Nuthetal G. BoL, Berlin R. Brandt, OsnabrUck R. Frank, Braunschweig T. Friedrich, Freiburg K. Giehl, Giessen F.-G. Hanisch, Cologne D. Heinz, Braunschweig D. KLostermeier, Basel I. Koch, Frankfurt/Main T. Roitsch, WUrzburg C. SeideL, DUsseldorf R. Tampe, Frankfurt/Main D. WoLf, Stuttgart EDITORIAL BOARD W Baumeister, Martinsried B. Brune, Frankfurt/Main B. Bukau, Heidelberg H. Fritz, Munich C. Hammann, Darmstadt D. Haussingel; DUsseldorf R . Kornberg, Stanford A. Kruger, Munich V. MagdoLen, Munich M. Muschen, Los Angeles G. PejLer, Uppsala N. Pfanner, Freiburg R. Pike, Melbourne J. Potempa, Krakow M. Ryan, Melbourne P. Saftig, Kiel W Schaffnel; ZUrich Biological Chemi stry is associated C. Sommerhoff, Munich with the Gesell schaft fUr Biochemie und D. WilLbold, DUsseldorf Moleku larbiologie e.V (GBM) DE GRUYTER BioI. Chern., Vol. 391, pp. 1221-1232, October 2010· Copyright © by Walter de Gruyter· Berlin· New York. DOI10.1515/BC .2010.116 Amino acid residues modulating the activities of staphylococcal glutamyl endopeptidases 2 Toshio Ono\ Yuko Ohara-Nemoto\ Yu Shimoyama , important virulence factors. One of these abundantly secreted Hisami Okawara\ Takeshi KobayakawaI, extracellular proteases is a serine protease, GluV8, also l 2 Tomomi T. Baba , Shigenobu Kimura and known as V8 protease/SspNGlu-C (Drapeau et aI. , 1972; 1 Takayuki K. Nemoto ,:;, Rice et aI., 2001). GluV8 contributes to the growth and sur­ vival of this microorganism in animal models (Coulter et aI., I Department of Oral Molecular Biology, Course of 1998) and plays a key role in degrading fibronectin-binding Medical and Dental Sciences, Nagasaki University proteins and protein A, which are adhesion molecules on the Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, staphylococcal surface (Karlsson et aI. , 2001). S. aureus Nagasaki 852-8588, Japan infection triggers the production of inhibitory antibodies 2 Department of Pathogenesis and Control of Oral Diseases, against GluV8 in mice, suggesting that the immunological Division of Oral Microbiology and Immunology, Iwate response to GluV8 could be an important host-defense mech­ Medical University School of Dentistry, 1-3-27 Chuodori, anism (Calander et aI., 2008). Morioka 020-8505, Japan GluV8 belongs to the glutamyl endopeptidase I family 8 Corresponding author (EC 3.4.21.19), whereby members specifically cleave the e-mail: [email protected] carboxyl side of the peptide bond of negatively charged resi­ dues, i.e., glutamic acid and, much less potently, aspartic acid Abstract (S tennicke and Breddam, 1998). In staphylococci, GluV8 family members are expressed in S. aureus (Drapeau et aI. , The glutamyl endopeptidase family of enzymes from staph­ 1972), Staphylococcus epidermidis (designated GluSE; Sasa­ ylococci has been shown to be important virulence deter­ ki et aI. , 1998; Dubin et aI. , 2001; Ohara-Nemoto et aI., minants of pathogenic family members, such as 2002), and Staphylococcus wa rneri (GluSW; Yokoi et aI. , Staphylococcus aureus. Previous studies have identified the 2001). Members of the GluV8 family are also expressed in N-terminus and residues from positions 185- 195 as poten­ Bacillus licheniformis (Kakudo et aI., 1992; Svendsen and tially important regions that determine the activity of three Breddam, 1992), Bacillus intermedius (Rebrikov et aI., 1999; members of the family. Cloning and sequencing of the new Demidyuk et aI. , 2004), Enterococcus faecalis (Kawalec et family members from Staphylococcus caprae (GluScpr) and aI., 2005), Streptomyces fradiae (Kitadokoro et aI., 1993), Staphylococcus cohnii (GluScoh) revealed that the N-termi­ and Streptomyces griseus (Svendsen et aI. , 1991 ; Suzuki et nal Val residue is maintained in all family members. Mutants aI. , 1994), suggesting important roles of these proteases in of the GluV8 enzyme from S. aureus with altered N-terminal the life of these bacteria. Therefore, it is reasonable to pos­ residues, including amino acids with similar properties, were tulate that other staphylococcal species also produce these inactive, indicating that the Val residue is specifically endopeptidases. In fact, the genome project of Staphylococ­ required at the N-terminus of this enzyme family in order cus saprophyticus revealed the existence of the gene encod­ for them to function correctly. Recombinant GluScpr was ing a GluV8 family endopeptidase (Figure 1), although the found to have peptidase activity intermediate between GluV8 protein expression of it has not been achieved yet (Kuroda and GluSE from Staphylococcus epidermis and to be some­ et aI., 2005). what less specific in its substrate requirements than other Drapeau (1978) found that maturation of GluV8 zymogen family members. The 185-195 region was found to contrib­ is mediated by a thermolysin family enzyme, aureolysin, that ute to the activity of GluScpr, although other regions of the exhibits a preference for hydrophobic amino acids in the PI' enzyme must also playa role in defining the activity. Our position of its substrates. In accordance with this finding, results strongly indicate the importance of the N-terminal and recombinant GluV8 expressed in Escherichia coli can be the 185-195 region in the activity of the glutamyl endopep­ efficiently processed into the mature form by thermolysin tidases of staphylococci. treatment in vitro (Nemoto et aI., 2008). Because V is com­ Keywords: processing; Staphylococcus aureus; monly located at the N-termini of all mature enzymes studied Staphylococcus cap rae; Staphylococcus cohnii; thus far (Ono et aI. , 2008; Figure 1), the thermolysin family Staphylococcus epidermidis; thermolysin. enzymes could be responsible for processing of all staphy­ lococcal glutamyl endopeptidases. In addition to a ro le of the pro-mature border, the protonated a -amino group of VI was Introduction reported to be important for the recognition of a substrate peptide (Prasad et aI. , 2004). However, if these two are the Staphylococcus aureus, a frequent pathogen in human dis­ entire roles of VI, any hydrophobic amino acids (L, Y, I, ease, produces extracellular proteases, which are regarded as and F) and A can be located at the N-terminus of mature 1222 T. Ono et al. A -68 -60 pre -50 -40 -30 pro -20 -10 -1 I. I ~ ' ~ I I . ' S . aureus MKGKFLKIfSSLFVATLTTJI.TLVSSPAANALSSKAHD.-HPQQTQSSKQQTPKIQ-KGG LKPLEQREHAN S . epidermidis !'1KKRFLSICTNTlAALATTTMVN--TSYAKTDTESHNHSSLGTENKNVLDINS-SSHNIKPSQ_ KSYPS S . warner i MKVKFFTASSLLIATLTS.lI.TLIN-- PAIiAETTSSTDNHQQTTQSQQQKTPKI D-KGNNVKPVEKKERAN S . saprop.IJyticus !'ILKRKLRGGLIFIIALLCTVISINGNTYAATQTHQSTDQSAQSEDJI.KVG-------------TNQIKTR S . caprae MRKFFLSIGFITIAILATTVLLN--ISQASEKSTPQADSMHQASHKKVTNDNGKANKKVK?LGSRKFPS S . cohnii MLKNILVS- I I IGTLLFLSSAINA-EVQAQNQNDnlKSSQQANESKQVG- -- ------------TATPR * 10 20 30 40 50 60 70 I I I I S . aureus VILPNNPRHOITDTT_'GHYAPVTYIQVEAPTG--TFIASGVVVGKDTLLTN~'vVDATHGDPHJI. LK .ZI.FPSAI S . epidermidis VILPNN 'RHOIFKTTQGHYDAVSFIYIPIDGG--YI~SGSGVVVGENEILTN H,TVNGAKGNPRNISVHPSAK S . warneri VILPNNDRHOINDTTLGHYAPVTFVQVQSNEG--TFIASGVVVGKDKLLTN HrvDATHGKPRALKAFPSAV S . saprop.IJyticus WLPNDDRTQIE. TTNGHYQSVGYISIGDNIA------TGVVIDKNTVLTN H,T.l'NLSEGN---HNFSPJI.AQ S. caprae VI LPNNNRHQI SNTQEGHYAPVS FVK IYNDSGDLVASGSG IVVGEKE I LTN H IVDAJI.HN . PDNLGVAPSSK S . cohnii VNLPGENRHQIENTQSSHYQS IGY I EKGETIA- - - ---TGVVVGKNTVLTN TVNNGDGK --- LS FAP.ZI.AE * ** * ** * ** * * ***** * 80 90 100 110 120 130 140 I I I I I I I S . aureus QDNY PNGGFTAEQ ITKY SGEIlAI VKFS PNEQNKH I GEVVKPAT~·IS -NAETQVNQ I TVTGYPGlllill S . epidermidis ENDYP. GKFVGQEIIPYPGN AILRVSPNEIiNQIiIGQWKPATISSNTDT!UNEXITVTGYPG.QlS£1. S . warneri NQNNYP GGFTGEQITKYPGN~ IVKFSPNNQNQNIGEWTPATLSDNADTSQNQPITVTGYPGDKPL S . saprop.IJyticus NENTI·\PYGTFSEKEIEVYPGN ALlIiLNKNKDEQSVGD'NQPATLKDASAVTKDI1PITVTGYPGDKSL S. caprae SESEHPNGEFKGQEIKKYPGN SILKVQPNEDNKKIGDVVTPAKISSNSNTQTDQDITVTGYPG.QlS£1. S. cohnii . EKSFPYGTFTEKE\NAYPGD VLVHFNKNNEGQSVGDWTPATIGETSTVSSNDPITVTGYPGDKPL *'1'"******** * * * '* * * *: * 150 160 170 180 190 200 210 I I I I ! U I I I S . aUl.-eus ~SKGKITYLKGEAJolQYDLSTTGGISPVFNEKNEVIGIHNGGVPNEFNGJI'VFINENVR.!ti:I.lillNI S . epidel.-midis ATWilESVGKVVYIGGEELRYDLSTVGG S..,SPVFNGKNQVIGIHYGGVDNKYNSSVYINDFVQQFLRNNI
Recommended publications
  • 1 Evidence for Gliadin Antibodies As Causative Agents in Schizophrenia
    1 Evidence for gliadin antibodies as causative agents in schizophrenia. C.J.Carter PolygenicPathways, 20 Upper Maze Hill, Saint-Leonard’s on Sea, East Sussex, TN37 0LG [email protected] Tel: 0044 (0)1424 422201 I have no fax Abstract Antibodies to gliadin, a component of gluten, have frequently been reported in schizophrenia patients, and in some cases remission has been noted following the instigation of a gluten free diet. Gliadin is a highly immunogenic protein, and B cell epitopes along its entire immunogenic length are homologous to the products of numerous proteins relevant to schizophrenia (p = 0.012 to 3e-25). These include members of the DISC1 interactome, of glutamate, dopamine and neuregulin signalling networks, and of pathways involved in plasticity, dendritic growth or myelination. Antibodies to gliadin are likely to cross react with these key proteins, as has already been observed with synapsin 1 and calreticulin. Gliadin may thus be a causative agent in schizophrenia, under certain genetic and immunological conditions, producing its effects via antibody mediated knockdown of multiple proteins relevant to the disease process. Because of such homology, an autoimmune response may be sustained by the human antigens that resemble gliadin itself, a scenario supported by many reports of immune activation both in the brain and in lymphocytes in schizophrenia. Gluten free diets and removal of such antibodies may be of therapeutic benefit in certain cases of schizophrenia. 2 Introduction A number of studies from China, Norway, and the USA have reported the presence of gliadin antibodies in schizophrenia 1-5. Gliadin is a component of gluten, intolerance to which is implicated in coeliac disease 6.
    [Show full text]
  • The Role of Streptococcal and Staphylococcal Exotoxins and Proteases in Human Necrotizing Soft Tissue Infections
    toxins Review The Role of Streptococcal and Staphylococcal Exotoxins and Proteases in Human Necrotizing Soft Tissue Infections Patience Shumba 1, Srikanth Mairpady Shambat 2 and Nikolai Siemens 1,* 1 Center for Functional Genomics of Microbes, Department of Molecular Genetics and Infection Biology, University of Greifswald, D-17489 Greifswald, Germany; [email protected] 2 Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, CH-8091 Zurich, Switzerland; [email protected] * Correspondence: [email protected]; Tel.: +49-3834-420-5711 Received: 20 May 2019; Accepted: 10 June 2019; Published: 11 June 2019 Abstract: Necrotizing soft tissue infections (NSTIs) are critical clinical conditions characterized by extensive necrosis of any layer of the soft tissue and systemic toxicity. Group A streptococci (GAS) and Staphylococcus aureus are two major pathogens associated with monomicrobial NSTIs. In the tissue environment, both Gram-positive bacteria secrete a variety of molecules, including pore-forming exotoxins, superantigens, and proteases with cytolytic and immunomodulatory functions. The present review summarizes the current knowledge about streptococcal and staphylococcal toxins in NSTIs with a special focus on their contribution to disease progression, tissue pathology, and immune evasion strategies. Keywords: Streptococcus pyogenes; group A streptococcus; Staphylococcus aureus; skin infections; necrotizing soft tissue infections; pore-forming toxins; superantigens; immunomodulatory proteases; immune responses Key Contribution: Group A streptococcal and Staphylococcus aureus toxins manipulate host physiological and immunological responses to promote disease severity and progression. 1. Introduction Necrotizing soft tissue infections (NSTIs) are rare and represent a more severe rapidly progressing form of soft tissue infections that account for significant morbidity and mortality [1].
    [Show full text]
  • Chymotrypsin: a Serine Protease Reaction Mechanism Step
    CHEM464/Medh,J.D. Catalytic Strategies Chymotrypsin: A serine protease • Covalent catalysis: temporary covalent modification of reactive • Hydrolyzes peptide bonds on the carboxyl side of group on enzyme active site Tyr, Phe, Trp, Met, Leu • Acid-Base catalysis: A molecule other than water is proton • Since peptide bond is highly unreactive, a strong donor or acceptor (nucleophilic or electrophilic attack) nucleophile is required for its hydrolysis • Metal ion catalysis: Involvement of metal ion in catalysis. A metal ion is an electrophile and (i) may stabilize a negative • Catalytic strategy is covalent modification and charge on an intermediate; (ii) by attracting electrons from acid-base catalysis water, renders water more acidic (prone to loose a proton); (iii) • Contains catalytic triad of Ser, His and Asp. Ser is may bind to substrate and reduce activation energy a nucleophile and participates in covalent • Catalysis by approximation: In reactions requiring more than modification, His is a proton acceptor (base), Asp one substrate, the enzyme facilitates their interaction by serving stabilizes His (and active site) by electrostatic as an adapter that increases proximity of the substrates to each interactions other Reaction Mechanism Step-wise reaction • Hydrolysis by chymotrypsin is a 2-step process • Enzyme active site is stabilized by ionic interactions • Step 1: serine reacts with substrate to form covalent between Asp and His and H-bond between His and Ser. ES complex • In the presence of a substrate, His accepts a proton from • Step 2: release of products from ES complex and Ser, Ser makes a nucleophilic attack on the peptide’s regeneration of enzyme carbonyl C converting its geometry to tetrahedral.
    [Show full text]
  • (12) Patent Application Publication (10) Pub. No.: US 2016/0346364 A1 BRUNS Et Al
    US 2016.0346364A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2016/0346364 A1 BRUNS et al. (43) Pub. Date: Dec. 1, 2016 (54) MEDICAMENT AND METHOD FOR (52) U.S. Cl. TREATING INNATE IMMUNE RESPONSE CPC ........... A61K 38/488 (2013.01); A61K 38/482 DISEASES (2013.01); C12Y 304/23019 (2013.01); C12Y 304/21026 (2013.01); C12Y 304/23018 (71) Applicant: DSM IPASSETS B.V., Heerlen (NL) (2013.01); A61K 9/0053 (2013.01); C12N 9/62 (2013.01); A23L 29/06 (2016.08); A2ID 8/042 (72) Inventors: Maaike Johanna BRUINS, Kaiseraugst (2013.01); A23L 5/25 (2016.08); A23V (CH); Luppo EDENS, Kaiseraugst 2002/00 (2013.01) (CH); Lenneke NAN, Kaiseraugst (CH) (57) ABSTRACT (21) Appl. No.: 15/101,630 This invention relates to a medicament or a dietary Supple (22) PCT Filed: Dec. 11, 2014 ment comprising the Aspergillus niger aspergilloglutamic peptidase that is capable of hydrolyzing plant food allergens, (86). PCT No.: PCT/EP2014/077355 and more particularly, alpha-amylase/trypsin inhibitors, thereby treating diseases due to an innate immune response S 371 (c)(1), in humans, and/or allowing to delay the onset of said (2) Date: Jun. 3, 2016 diseases. The present invention relates to the discovery that (30) Foreign Application Priority Data the Aspergillus niger aspergilloglutamic peptidase is capable of hydrolyzing alpha-amylase/trypsin inhibitors that are Dec. 11, 2013 (EP) .................................. 13196580.8 present in wheat and related cereals said inhibitors being strong inducers of innate immune response. Furthermore, Publication Classification the present invention relates to a method for hydrolyzing alpha-amylase/trypsin inhibitors comprising incubating a (51) Int.
    [Show full text]
  • Role of Extracellular Proteases in Biofilm Disruption of Gram Positive
    e Engine ym er z in n g E Mukherji, et al., Enz Eng 2015, 4:1 Enzyme Engineering DOI: 10.4172/2329-6674.1000126 ISSN: 2329-6674 Review Article Open Access Role of Extracellular Proteases in Biofilm Disruption of Gram Positive Bacteria with Special Emphasis on Staphylococcus aureus Biofilms Mukherji R, Patil A and Prabhune A* Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Pune, India *Corresponding author: Asmita Prabhune, Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Pune 411008, India, Tel: 91-020-25902239; Fax: 91-020-25902648; E-mail: [email protected] Rec date: December 28, 2014, Acc date: January 12, 2015, Pub date: January 15, 2015 Copyright: © 2015 Mukherji R, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Abstract Bacterial biofilms are multicellular structures akin to citadels which have individual bacterial cells embedded within a matrix of a self-synthesized polymeric or proteinaceous material. Since biofilms can establish themselves on both biotic and abiotic surfaces and that bacteria residing in these complex molecular structures are much more resistant to antimicrobial agents than their planktonic equivalents, makes these entities a medical and economic nuisance. Of late, several strategies have been investigated that intend to provide a sustainable solution to treat this problem. More recently role of extracellular proteases in disruption of already established bacterial biofilms and in prevention of biofilm formation itself has been demonstrated. The present review aims to collectively highlight the role of bacterial extracellular proteases in biofilm disruption of Gram positive bacteria.
    [Show full text]
  • Mediate Immune Evasion Aureolysin Cleaves Complement C3 To
    Staphylococcus aureus Metalloprotease Aureolysin Cleaves Complement C3 To Mediate Immune Evasion This information is current as Alexander J. Laarman, Maartje Ruyken, Cheryl L. Malone, of September 29, 2021. Jos A. G. van Strijp, Alexander R. Horswill and Suzan H. M. Rooijakkers J Immunol 2011; 186:6445-6453; Prepublished online 18 April 2011; doi: 10.4049/jimmunol.1002948 Downloaded from http://www.jimmunol.org/content/186/11/6445 Supplementary http://www.jimmunol.org/content/suppl/2011/04/18/jimmunol.100294 Material 8.DC1 http://www.jimmunol.org/ References This article cites 56 articles, 13 of which you can access for free at: http://www.jimmunol.org/content/186/11/6445.full#ref-list-1 Why The JI? Submit online. • Rapid Reviews! 30 days* from submission to initial decision by guest on September 29, 2021 • No Triage! Every submission reviewed by practicing scientists • Fast Publication! 4 weeks from acceptance to publication *average Subscription Information about subscribing to The Journal of Immunology is online at: http://jimmunol.org/subscription Permissions Submit copyright permission requests at: http://www.aai.org/About/Publications/JI/copyright.html Email Alerts Receive free email-alerts when new articles cite this article. Sign up at: http://jimmunol.org/alerts The Journal of Immunology is published twice each month by The American Association of Immunologists, Inc., 1451 Rockville Pike, Suite 650, Rockville, MD 20852 Copyright © 2011 by The American Association of Immunologists, Inc. All rights reserved. Print ISSN: 0022-1767 Online ISSN: 1550-6606. The Journal of Immunology Staphylococcus aureus Metalloprotease Aureolysin Cleaves Complement C3 To Mediate Immune Evasion Alexander J.
    [Show full text]
  • NS3 Protease from Flavivirus As a Target for Designing Antiviral Inhibitors Against Dengue Virus
    Genetics and Molecular Biology, 33, 2, 214-219 (2010) Copyright © 2010, Sociedade Brasileira de Genética. Printed in Brazil www.sbg.org.br Review Article NS3 protease from flavivirus as a target for designing antiviral inhibitors against dengue virus Satheesh Natarajan Department of Biochemistry, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malayasia. Abstract The development of novel therapeutic agents is essential for combating the increasing number of cases of dengue fever in endemic countries and among a large number of travelers from non-endemic countries. The dengue virus has three structural proteins and seven non-structural (NS) proteins. NS3 is a multifunctional protein with an N-terminal protease domain (NS3pro) that is responsible for proteolytic processing of the viral polyprotein, and a C-terminal region that contains an RNA triphosphatase, RNA helicase and RNA-stimulated NTPase domain that are essential for RNA replication. The serine protease domain of NS3 plays a central role in the replicative cycle of den- gue virus. This review discusses the recent structural and biological studies on the NS2B-NS3 protease-helicase and considers the prospects for the development of small molecules as antiviral drugs to target this fascinating, multifunctional protein. Key words: antiviral inhibitor, drug discovery, multifunctional protein, NS3, protease. Received: March 4, 2009; Accepted: November 1, 2009. Introduction seven non-structural proteins involved in viral replication The genus Flavivirus in the family Flaviviridae con- and maturation (Henchal and Putnak, 1990; Kautner et al., tains a large number of viral pathogens that cause severe 1996). The virus-encoded protease complex NS2B-NS3 is morbidity and mortality in humans and animals (Bancroft, responsible for cleaving the NS2A/NS2B, NS2B/NS3, 1996).
    [Show full text]
  • Serine Proteases with Altered Sensitivity to Activity-Modulating
    (19) & (11) EP 2 045 321 A2 (12) EUROPEAN PATENT APPLICATION (43) Date of publication: (51) Int Cl.: 08.04.2009 Bulletin 2009/15 C12N 9/00 (2006.01) C12N 15/00 (2006.01) C12Q 1/37 (2006.01) (21) Application number: 09150549.5 (22) Date of filing: 26.05.2006 (84) Designated Contracting States: • Haupts, Ulrich AT BE BG CH CY CZ DE DK EE ES FI FR GB GR 51519 Odenthal (DE) HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI • Coco, Wayne SK TR 50737 Köln (DE) •Tebbe, Jan (30) Priority: 27.05.2005 EP 05104543 50733 Köln (DE) • Votsmeier, Christian (62) Document number(s) of the earlier application(s) in 50259 Pulheim (DE) accordance with Art. 76 EPC: • Scheidig, Andreas 06763303.2 / 1 883 696 50823 Köln (DE) (71) Applicant: Direvo Biotech AG (74) Representative: von Kreisler Selting Werner 50829 Köln (DE) Patentanwälte P.O. Box 10 22 41 (72) Inventors: 50462 Köln (DE) • Koltermann, André 82057 Icking (DE) Remarks: • Kettling, Ulrich This application was filed on 14-01-2009 as a 81477 München (DE) divisional application to the application mentioned under INID code 62. (54) Serine proteases with altered sensitivity to activity-modulating substances (57) The present invention provides variants of ser- screening of the library in the presence of one or several ine proteases of the S1 class with altered sensitivity to activity-modulating substances, selection of variants with one or more activity-modulating substances. A method altered sensitivity to one or several activity-modulating for the generation of such proteases is disclosed, com- substances and isolation of those polynucleotide se- prising the provision of a protease library encoding poly- quences that encode for the selected variants.
    [Show full text]
  • Human Elastase 1: Evidence for Expression in the Skin and the Identi®Cation of a Frequent Frameshift Polymorphism
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector Human Elastase 1: Evidence for Expression in the Skin and the Identi®cation of a Frequent Frameshift Polymorphism Ulvi Talas, John Dunlop,1 Sahera Khalaf , Irene M. Leigh, and David P. Kelsell Center for Cutaneous Research, St. Bartholomew's and the Royal London School of Medicine and Dentistry, Whitechapel, London, U.K. Human pancreatic elastase 1 is a serine protease individuals with/without the keratoderma revealed a which maps to the chromosomal region 12q13 close sequence variant, which would result in a premature to a locus for an autosomal dominant skin disease, truncation of the protein. This sequence variant, diffuse nonepidermolytic palmoplantar keratoderma, however, did not segregate with the skin disease and, and was investigated as a possible candidate gene for indeed, was found to occur at a relatively high fre- this disorder. Expression of two elastase inhibitors, quency in the population. Individuals homozygous ela®n and SLPI, has been related to several hyper- for the variant do not have any obvious skin proliferative skin conditions. elastase 1 is functionally abnormalities. Based on the analysis of the secondary silent in the human pancreas but elastase 1 expres- structure of the translated putative protein, the sion at the mRNA level was detected in human truncation is unlikely to result in knock-out of the cultured primary keratinocytes. Antibody staining elastase, but may cause destabilization of the localized the protein to the basal cell layer of the enzyme±inhibitor complex. Key words: ela®n/keratino- human epidermis at a number of sites includingthe cyte/protein truncation/serine protease.
    [Show full text]
  • Elastase-Induced Pulmonary Emphysema: Insights from Experimental Models
    “main” — 2011/10/13 — 23:40 — page 1385 — #1 Anais da Academia Brasileira de Ciências (2011) 83(4): 1385-1395 (Annals of the Brazilian Academy of Sciences) Printed version ISSN 0001-3765 / Online version ISSN 1678-2690 www.scielo.br/aabc Elastase-induced pulmonary emphysema: insights from experimental models MARIANA A. ANTUNES and PATRICIA R.M. ROCCO Laboratório de Investigação Pulmonar, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, s/n, Cidade Universitária, Ilha do Fundão, 21941-902 Rio de Janeiro, RJ, Brasil Manuscript received on November 8, 2010; accepted for publication on May 19, 2011 ABSTRACT Several distinct stimuli can be used to reproduce histological and functional features of human emphysema, a lead- ing cause of disability and death. Since cigarette smoke is the main cause of emphysema in humans, experimental researches have attempted to reproduce this situation. However, this is an expensive and cumbersome method of em- physema induction, and simpler, more efficacious alternatives have been sought. Among these approaches, elastolytic enzymes have been widely used to reproduce some characteristics of human cigarette smoke-induced disease, such as: augmentation of airspaces, inflammatory cell influx into the lungs, and systemic inflammation. Nevertheless, theuse of elastase-induced emphysema models is still controversial, since the disease pathways involved in elastase induction may differ from those occurring in smoke-induced emphysema. This indicates that the choice of an emphysema model may impact the results of new therapies or drugs being tested. The aim of this review is to compare the mechanisms of disease induction in smoke and elastase emphysema models, to describe the differences among various elastase models, and to establish the advantages and disadvantages of elastase-induced emphysema models.
    [Show full text]
  • IL-33 Is Processed Into Mature Bioactive Forms by Neutrophil Elastase and Cathepsin G
    IL-33 is processed into mature bioactive forms by neutrophil elastase and cathepsin G Emma Lefrançais, Stephane Roga, Violette Gautier, Anne Gonzalez-de-Peredo, Bernard Monsarrat, Jean-Philippe Girard1,2, and Corinne Cayrol1,2 Centre National de la Recherche Scientifique, Institut de Pharmacologie et de Biologie Structurale, F-31077 Toulouse, France; Université de Toulouse, Université Paul Sabatier, Institut de Pharmacologie et de Biologie Structurale, F-31077 Toulouse, France Edited* by Charles A. Dinarello, University of Colorado Denver, Aurora, CO, and approved December 19, 2011 (received for review October 3, 2011) Interleukin-33 (IL-33) (NF-HEV) is a chromatin-associated nuclear activity (4). However, we (23) and others (24–26) demonstrated cytokine from the IL-1 family, which has been linked to important that full-length IL-33 is biologically active and that processing of diseases, including asthma, rheumatoid arthritis, ulcerative colitis, IL-33 by caspases results in its inactivation, rather than its activa- and cardiovascular diseases. IL-33 signals through the ST2 receptor tion. Further analyses revealed that IL-33 is constitutively and drives cytokine production in type 2 innate lymphoid cells (ILCs) expressed to high levels in the nuclei of endothelial and epithelial (natural helper cells, nuocytes), T-helper (Th)2 lymphocytes, mast cells in vivo (27) and that it can be released in the extracellular cells, basophils, eosinophils, invariant natural killer T (iNKT), and space after cellular damage (23, 24). IL-33 was, thus, proposed (23, natural killer (NK) cells. We and others recently reported that, unlike 24, 27) to function as an endogenous danger signal or alarmin, IL-1β and IL-18, full-length IL-33 is biologically active independently similar to IL-1α and high-mobility group box 1 protein (HMGB1) of caspase-1 cleavage and that processing by caspases results in IL-33 (28–32), to alert cells of the innate immune system of tissue inactivation.
    [Show full text]
  • Serine Protease (Chymotrypsin) from Nocardiopsis Prasina Expressed in Bacillus Licheniformis
    SERINE PROTEASE (CHYMOTRYPSIN) FROM NOCARDIOPSIS PRASINA EXPRESSED IN BACILLUS LICHENIFORMIS Chemical and Technical Assessment Prepared by Jannavi R. Srinivasan, Ph.D., Reviewed by Dr. Inge Meyland, Ph. D. 1. Summary This Chemical and Technical Assessment (CTA) summarizes data and information on the serine protease with chymotrypsin specificity from Nocardiopsis prasina expressed in Bacillus Licheniformis enzyme preparation submitted to the Joint FAO/WHO Expert Committee on Food Additives (JECFA) by Novozymes A/S in a dossier dated November 25, 2011 (Novozymes, 2011)a. In this CTA, the expression ‘serine protease (chymotrypsin)’ is used when referring to the serine protease with chymotrypsin specificity enzyme and its amino acid sequence, whereas the expression ‘serine protease (chymotrypsin) enzyme preparation’ is used when referring to the enzyme preparation. This document also discusses published information relevant to serine protease (chymotrypsin), the B. licheniformis production organism, and the N. prasina organism that is the source for the serine protease (chymotrypsin) gene. Serine protease (chymotrypsin) catalyses the hydrolysis of peptide bonds in a protein, preferably at the carboxyl end of Tyr (Tyr-X), Phe (Phe-X), Trp (Trp-X), when X is not proline. It also catalyses the hydrolysis of peptide bonds at the carboxyl end of other amino acids, primarily Met and Leu, albeit at a slower rate. It is intended for use in the production of hydrolysed animal and vegetable proteins including casein, whey, soy isolate, soy concentrate, wheat gluten and corn gluten. These hydrolysed proteins will be used for various applications as ingredients in food, protein-fortified food, and beverages. The serine protease (chymotrypsin) enzyme preparation is expected to be inactivated during food processing.
    [Show full text]