B Number Gene Name Mrna Intensity Mrna Present # of Tryptic
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Activation-Induced Deoxycytidine Deaminase (AID) Co-Transcriptional Scanning at Single-Molecule Resolution
ARTICLE Received 19 Nov 2014 | Accepted 13 Nov 2015 | Published 18 Dec 2015 DOI: 10.1038/ncomms10209 OPEN Activation-induced deoxycytidine deaminase (AID) co-transcriptional scanning at single-molecule resolution Gayan Senavirathne1,*, Jeffrey G. Bertram2,*, Malgorzata Jaszczur2,*, Kathy R. Chaurasiya3,4,*, Phuong Pham2, Chi H. Mak5,6, Myron F. Goodman2,5 & David Rueda1,3,4 Activation-induced deoxycytidine deaminase (AID) generates antibody diversity in B cells by initiating somatic hypermutation (SHM) and class-switch recombination (CSR) during transcription of immunoglobulin variable (IgV) and switch region (IgS) DNA. Using single- molecule FRET, we show that AID binds to transcribed dsDNA and translocates unidirectionally in concert with RNA polymerase (RNAP) on moving transcription bubbles, while increasing the fraction of stalled bubbles. AID scans randomly when constrained in an 8 nt model bubble. When unconstrained on single-stranded (ss) DNA, AID moves in random bidirectional short slides/hops over the entire molecule while remaining bound for B5 min. Our analysis distinguishes dynamic scanning from static ssDNA creasing. That AID alone can track along with RNAP during transcription and scan within stalled transcription bubbles suggests a mechanism by which AID can initiate SHM and CSR when properly regulated, yet when unregulated can access non-Ig genes and cause cancer. 1 Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, USA. 2 Department of Biological Sciences, University of Southern California, Los Angeles, California 90089, USA. 3 Department of Medicine, Section of Virology, Imperial College London, Du Cane Road, London W12 0NN, UK. 4 Single Molecule Imaging Group, MRC Clinical Sciences Center, Imperial College London, Du Cane Road, London W12 0NN, UK. -
Protein Expression Profile of Gluconacetobacter Diazotrophicus PAL5, a Sugarcane Endophytic Plant Growth-Promoting Bacterium
Proteomics 2008, 8, 1631–1644 DOI 10.1002/pmic.200700912 1631 RESEARCH ARTICLE Protein expression profile of Gluconacetobacter diazotrophicus PAL5, a sugarcane endophytic plant growth-promoting bacterium Leticia M. S. Lery1, 2, Ana Coelho1, 3, Wanda M. A. von Kruger1, 2, Mayla S. M. Gonc¸alves1, 3, Marise F. Santos1, 4, Richard H. Valente1, 5, Eidy O. Santos1, 3, Surza L. G. Rocha1, 5, Jonas Perales1, 5, Gilberto B. Domont1, 4, Katia R. S. Teixeira1, 6 and Paulo M. Bisch1, 2 1 Rio de Janeiro Proteomics Network, Rio de Janeiro, Brazil 2 Unidade Multidisciplinar de Genômica, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil 3 Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil 4 Laboratório de Química de Proteínas, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil 5 Laboratório de Toxinologia, Departamento de Fisiologia e Farmacodinâmica- Instituto Oswaldo Cruz- Fundac¸ão Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil 6 Laboratório de Genética e Bioquímica, Embrapa Agrobiologia, Seropédica, Brazil This is the first broad proteomic description of Gluconacetobacter diazotrophicus, an endophytic Received: September 25, 2007 bacterium, responsible for the major fraction of the atmospheric nitrogen fixed in sugarcane in Revised: December 18, 2007 tropical regions. Proteomic coverage of G. diazotrophicus PAL5 was obtained by two independent Accepted: December 19, 2007 approaches: 2-DE followed by MALDI-TOF or TOF-TOF MS and 1-DE followed by chromatog- raphy in a C18 column online coupled to an ESI-Q-TOF or ESI-IT mass spectrometer. -
The Phylogenetic Extent of Metabolic Enzymes and Pathways José Manuel Peregrin-Alvarez, Sophia Tsoka, Christos A
Downloaded from genome.cshlp.org on October 8, 2021 - Published by Cold Spring Harbor Laboratory Press Letter The Phylogenetic Extent of Metabolic Enzymes and Pathways José Manuel Peregrin-Alvarez, Sophia Tsoka, Christos A. Ouzounis1 Computational Genomics Group, The European Bioinformatics Institute, EMBL Cambridge Outstation, Cambridge CB10 1SD, UK The evolution of metabolic enzymes and pathways has been a subject of intense study for more than half a century. Yet, so far, previous studies have focused on a small number of enzyme families or biochemical pathways. Here, we examine the phylogenetic distribution of the full-known metabolic complement of Escherichia coli, using sequence comparison against taxa-specific databases. Half of the metabolic enzymes have homologs in all domains of life, representing families involved in some of the most fundamental cellular processes. We thus show for the first time and in a comprehensive way that metabolism is conserved at the enzyme level. In addition, our analysis suggests that despite the sequence conservation and the extensive phylogenetic distribution of metabolic enzymes, their groupings into biochemical pathways are much more variable than previously thought. One of the fundamental tenets in molecular biology was ex- reliable source of metabolic information. The EcoCyc data- pressed by Monod, in his famous phrase “What is true for base holds information about the full genome and all known Escherichia coli is true for the elephant” (Jacob 1988). For a metabolic pathways of Escherichia coli (Karp et al. 2000). Re- long time, this statement has inspired generations of molecu- cently, the database has been used to represent computational lar biologists, who have used Bacteria as model organisms to predictions of other organisms (Karp 2001). -
WO 2013/180584 Al 5 December 2013 (05.12.2013) P O P C T
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2013/180584 Al 5 December 2013 (05.12.2013) P O P C T (51) International Patent Classification: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, C12N 1/21 (2006.01) C12N 15/74 (2006.01) BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, C12N 15/52 (2006.01) C12P 5/02 (2006.01) DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, C12N 15/63 (2006.01) HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, (21) International Application Number: MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, PCT/NZ20 13/000095 OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, (22) International Filing Date: SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, 4 June 2013 (04.06.2013) TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (25) Filing Language: English (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (26) Publication Language: English GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, (30) Priority Data: UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 61/654,412 1 June 2012 (01 .06.2012) US TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, (71) Applicant: LANZATECH NEW ZEALAND LIMITED MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, [NZ/NZ]; 24 Balfour Road, Parnell, Auckland, 1052 (NZ). -
Difluorodeoxycytidine 5'-Triphosphate: a Mechanism of Self-Potentiation1
ICANCER RESEARCH 52, 533-539, February 1, 1992] Cellular Elimination of 2',2'-Difluorodeoxycytidine 5'-Triphosphate: A Mechanism of Self-Potentiation1 Volker Heinemann,2 Y¡-ZhengXu, Sherri Chubb, Alina Sen, Larry W. Hertel, Gerald B. Grindey, and William Plunkett1 Department of Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030 [V. H., Y. X., S. C., A. S., W. P.], and Lilly Research Laboratories, Indianapolis, Indiana 46285 (L. W. H., G. B. G.] ABSTRACT less, clinical cellular pharmacology studies have demonstrated 2',2'-Difluorodeoxycytidine (dFdC, Gemcitabine) is a deoxycytidine that the dFdCTP:dCTP value reaches potentially inhibitory analogue which, after phosphorylation to the 5'-di- and 5'-triphosphate values during clinical trials (4, 10, 11). (b) dFdCTP is incor porated into DNA by DNA polymerases a and f, inhibiting (dFdCTP), induces inhibition of DNA synthesis and cell death. We examined the values for elimination kinetics of cellular dFdCTP and further elongation (9). (c) Once incorporated, dFdCMP resi found they were dependent on cellular concentration after incubation of dues in the terminal or penultimate positions of the DNA strand CCRF-CEM cells with dFdC and washing into drug-free medium. When inhibit the editing function of DNA polymerase <(9). This may the drug was washed out at low cellular dFdCTP levels (<50 n\\), fix damage caused by the incorporated analogue, (d) dFdCDP dFdCTP elimination was linear (t,: = 3.3 h), but it became biphasic at inhibits ribonucleotide reducÃase,blocking DNA synthesis by intracellular dFdCTP levels >100 JIM. Although the initial elimination decreasing the cellular concentrations of deoxynucleoside tri rate was similar at all concentrations, at higher concentrations the phosphates (12-14). -
Genome-Scale Fitness Profile of Caulobacter Crescentus Grown in Natural Freshwater
Supplemental Material Genome-scale fitness profile of Caulobacter crescentus grown in natural freshwater Kristy L. Hentchel, Leila M. Reyes Ruiz, Aretha Fiebig, Patrick D. Curtis, Maureen L. Coleman, Sean Crosson Tn5 and Tn-Himar: comparing gene essentiality and the effects of gene disruption on fitness across studies A previous analysis of a highly saturated Caulobacter Tn5 transposon library revealed a set of genes that are required for growth in complex PYE medium [1]; approximately 14% of genes in the genome were deemed essential. The total genome insertion coverage was lower in the Himar library described here than in the Tn5 dataset of Christen et al (2011), as Tn-Himar inserts specifically into TA dinucleotide sites (with 67% GC content, TA sites are relatively limited in the Caulobacter genome). Genes for which we failed to detect Tn-Himar insertions (Table S13) were largely consistent with essential genes reported by Christen et al [1], with exceptions likely due to differential coverage of Tn5 versus Tn-Himar mutagenesis and differences in metrics used to define essentiality. A comparison of the essential genes defined by Christen et al and by our Tn5-seq and Tn-Himar fitness studies is presented in Table S4. We have uncovered evidence for gene disruptions that both enhanced or reduced strain fitness in lake water and M2X relative to PYE. Such results are consistent for a number of genes across both the Tn5 and Tn-Himar datasets. Disruption of genes encoding three metabolic enzymes, a class C β-lactamase family protein (CCNA_00255), transaldolase (CCNA_03729), and methylcrotonyl-CoA carboxylase (CCNA_02250), enhanced Caulobacter fitness in Lake Michigan water relative to PYE using both Tn5 and Tn-Himar approaches (Table S7). -
Synthesis of Tryptophan from Indole, Pyruvate, and Ammonia (E
Proc. Nat. Acad. S&i. USA Vol. 69, No. 5, pp. 1086-1090, May 1972 Reversibility of the Tryptophanase Reaction: Synthesis of Tryptophan from Indole, Pyruvate, and Ammonia (E. coli/a-aminoacrylate/Michaelis-Menten kinetics/pyridoxal 5'-phosphate) TAKEHIKO WATANABE AND ESMOND E. SNELL Department of Biochemistry, University of California, Berkeley, Calif. 94720 Contributed by Esmond E. Snell, February 14, 1972 ABSTRACT Degradation of tryptophan to indole, tain substituted indoles. Reactions 1-3 were shown (4)t to pro- pyruvate, and ammonia by tryptophanase (EC 4 ....) from ceed through a common intermediate, probably an enzyme- Escherichia coli, previously thought to be an irreversible reaction, is readily reversible at high concentrations of bound a-aminoacrylic acid, which could either decompose to pyruvate and ammonia. Tryptophan and certain of its pyruvate and ammonia (in reactions 1 and 2) or add indole to analogues, e.g., 5-hydroxytryptophan, can be synthesized form tryptophan (in reaction 3). At concentrations previously by this reaction from pyruvate, ammonia, and indole or an tested, reactions 1 and 2 were irreversible (4). appropriate derivative at maximum velocities approaching to Yamada et al. those of the degradative reactions. Concentrations of Subsequent these investigations, (5-7) ammonia required for the synthetic reactions produce showed that 0-tyrosinase from Escherichia intermedia cata- specific changes in the spectrum of tryptophanase that lyzes reaction 4 but not reaction 1, and is similar in many differ from those produced by K+ and indicate that am- respects to tryptophanase. monia interacts with bound pyridoxal 5'-phosphate to form an imine. Kinetic results indicate that pyruvate is Tyrosine + H20 Phenol + Pyruvate + NH3 (4) the second substrate bound, hence indole must be the too, catalyzes degradation of serine, cysteine, etc. -
B Number Gene Name Mrna Intensity Mrna
sample) total list predicted B number Gene name assignment mRNA present mRNA intensity Gene description Protein detected - Membrane protein membrane sample detected (total list) Proteins detected - Functional category # of tryptic peptides # of tryptic peptides # of tryptic peptides detected (membrane b0002 thrA 13624 P 39 P 18 P(m) 2 aspartokinase I, homoserine dehydrogenase I Metabolism of small molecules b0003 thrB 6781 P 9 P 3 0 homoserine kinase Metabolism of small molecules b0004 thrC 15039 P 18 P 10 0 threonine synthase Metabolism of small molecules b0008 talB 20561 P 20 P 13 0 transaldolase B Metabolism of small molecules chaperone Hsp70; DNA biosynthesis; autoregulated heat shock b0014 dnaK 13283 P 32 P 23 0 proteins Cell processes b0015 dnaJ 4492 P 13 P 4 P(m) 1 chaperone with DnaK; heat shock protein Cell processes b0029 lytB 1331 P 16 P 2 0 control of stringent response; involved in penicillin tolerance Global functions b0032 carA 9312 P 14 P 8 0 carbamoyl-phosphate synthetase, glutamine (small) subunit Metabolism of small molecules b0033 carB 7656 P 48 P 17 0 carbamoyl-phosphate synthase large subunit Metabolism of small molecules b0048 folA 1588 P 7 P 1 0 dihydrofolate reductase type I; trimethoprim resistance Metabolism of small molecules peptidyl-prolyl cis-trans isomerase (PPIase), involved in maturation of b0053 surA 3825 P 19 P 4 P(m) 1 GenProt outer membrane proteins (1st module) Cell processes b0054 imp 2737 P 42 P 5 P(m) 5 GenProt organic solvent tolerance Cell processes b0071 leuD 4770 P 10 P 9 0 isopropylmalate -
Generate Metabolic Map Poster
Authors: Pallavi Subhraveti Ron Caspi Peter Midford Peter D Karp An online version of this diagram is available at BioCyc.org. Biosynthetic pathways are positioned in the left of the cytoplasm, degradative pathways on the right, and reactions not assigned to any pathway are in the far right of the cytoplasm. Transporters and membrane proteins are shown on the membrane. Ingrid Keseler Periplasmic (where appropriate) and extracellular reactions and proteins may also be shown. Pathways are colored according to their cellular function. Gcf_001591825Cyc: Bacillus vietnamensis NBRC 101237 Cellular Overview Connections between pathways are omitted for legibility. Anamika Kothari sn-glycerol phosphate phosphate pro phosphate phosphate phosphate thiamine molybdate D-xylose D-ribose glutathione 3-phosphate D-mannitol L-cystine L-djenkolate lanthionine α,β-trehalose phosphate phosphate [+ 3 more] α,α-trehalose predicted predicted ABC ABC FliY ThiT XylF RbsB RS10935 UgpC TreP PutP RS10200 PstB PstB RS10385 RS03335 RS20030 RS19075 transporter transporter of molybdate of phosphate α,β-trehalose 6-phosphate L-cystine D-xylose D-ribose sn-glycerol D-mannitol phosphate phosphate thiamine glutathione α α phosphate phosphate phosphate phosphate L-djenkolate 3-phosphate , -trehalose 6-phosphate pro 1-phosphate lanthionine molybdate phosphate [+ 3 more] Metabolic Regulator Amino Acid Degradation Amine and Polyamine Biosynthesis Macromolecule Modification tRNA-uridine 2-thiolation Degradation ATP biosynthesis a mature peptidoglycan a nascent β an N-terminal- -
Letters to Nature
letters to nature Received 7 July; accepted 21 September 1998. 26. Tronrud, D. E. Conjugate-direction minimization: an improved method for the re®nement of macromolecules. Acta Crystallogr. A 48, 912±916 (1992). 1. Dalbey, R. E., Lively, M. O., Bron, S. & van Dijl, J. M. The chemistry and enzymology of the type 1 27. Wolfe, P. B., Wickner, W. & Goodman, J. M. Sequence of the leader peptidase gene of Escherichia coli signal peptidases. Protein Sci. 6, 1129±1138 (1997). and the orientation of leader peptidase in the bacterial envelope. J. Biol. Chem. 258, 12073±12080 2. Kuo, D. W. et al. Escherichia coli leader peptidase: production of an active form lacking a requirement (1983). for detergent and development of peptide substrates. Arch. Biochem. Biophys. 303, 274±280 (1993). 28. Kraulis, P.G. Molscript: a program to produce both detailed and schematic plots of protein structures. 3. Tschantz, W. R. et al. Characterization of a soluble, catalytically active form of Escherichia coli leader J. Appl. Crystallogr. 24, 946±950 (1991). peptidase: requirement of detergent or phospholipid for optimal activity. Biochemistry 34, 3935±3941 29. Nicholls, A., Sharp, K. A. & Honig, B. Protein folding and association: insights from the interfacial and (1995). the thermodynamic properties of hydrocarbons. Proteins Struct. Funct. Genet. 11, 281±296 (1991). 4. Allsop, A. E. et al.inAnti-Infectives, Recent Advances in Chemistry and Structure-Activity Relationships 30. Meritt, E. A. & Bacon, D. J. Raster3D: photorealistic molecular graphics. Methods Enzymol. 277, 505± (eds Bently, P. H. & O'Hanlon, P. J.) 61±72 (R. Soc. Chem., Cambridge, 1997). -
(10) Patent No.: US 8119385 B2
US008119385B2 (12) United States Patent (10) Patent No.: US 8,119,385 B2 Mathur et al. (45) Date of Patent: Feb. 21, 2012 (54) NUCLEICACIDS AND PROTEINS AND (52) U.S. Cl. ........................................ 435/212:530/350 METHODS FOR MAKING AND USING THEMI (58) Field of Classification Search ........................ None (75) Inventors: Eric J. Mathur, San Diego, CA (US); See application file for complete search history. Cathy Chang, San Diego, CA (US) (56) References Cited (73) Assignee: BP Corporation North America Inc., Houston, TX (US) OTHER PUBLICATIONS c Mount, Bioinformatics, Cold Spring Harbor Press, Cold Spring Har (*) Notice: Subject to any disclaimer, the term of this bor New York, 2001, pp. 382-393.* patent is extended or adjusted under 35 Spencer et al., “Whole-Genome Sequence Variation among Multiple U.S.C. 154(b) by 689 days. Isolates of Pseudomonas aeruginosa” J. Bacteriol. (2003) 185: 1316 1325. (21) Appl. No.: 11/817,403 Database Sequence GenBank Accession No. BZ569932 Dec. 17. 1-1. 2002. (22) PCT Fled: Mar. 3, 2006 Omiecinski et al., “Epoxide Hydrolase-Polymorphism and role in (86). PCT No.: PCT/US2OO6/OOT642 toxicology” Toxicol. Lett. (2000) 1.12: 365-370. S371 (c)(1), * cited by examiner (2), (4) Date: May 7, 2008 Primary Examiner — James Martinell (87) PCT Pub. No.: WO2006/096527 (74) Attorney, Agent, or Firm — Kalim S. Fuzail PCT Pub. Date: Sep. 14, 2006 (57) ABSTRACT (65) Prior Publication Data The invention provides polypeptides, including enzymes, structural proteins and binding proteins, polynucleotides US 201O/OO11456A1 Jan. 14, 2010 encoding these polypeptides, and methods of making and using these polynucleotides and polypeptides. -
The Microbiota-Produced N-Formyl Peptide Fmlf Promotes Obesity-Induced Glucose
Page 1 of 230 Diabetes Title: The microbiota-produced N-formyl peptide fMLF promotes obesity-induced glucose intolerance Joshua Wollam1, Matthew Riopel1, Yong-Jiang Xu1,2, Andrew M. F. Johnson1, Jachelle M. Ofrecio1, Wei Ying1, Dalila El Ouarrat1, Luisa S. Chan3, Andrew W. Han3, Nadir A. Mahmood3, Caitlin N. Ryan3, Yun Sok Lee1, Jeramie D. Watrous1,2, Mahendra D. Chordia4, Dongfeng Pan4, Mohit Jain1,2, Jerrold M. Olefsky1 * Affiliations: 1 Division of Endocrinology & Metabolism, Department of Medicine, University of California, San Diego, La Jolla, California, USA. 2 Department of Pharmacology, University of California, San Diego, La Jolla, California, USA. 3 Second Genome, Inc., South San Francisco, California, USA. 4 Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, VA, USA. * Correspondence to: 858-534-2230, [email protected] Word Count: 4749 Figures: 6 Supplemental Figures: 11 Supplemental Tables: 5 1 Diabetes Publish Ahead of Print, published online April 22, 2019 Diabetes Page 2 of 230 ABSTRACT The composition of the gastrointestinal (GI) microbiota and associated metabolites changes dramatically with diet and the development of obesity. Although many correlations have been described, specific mechanistic links between these changes and glucose homeostasis remain to be defined. Here we show that blood and intestinal levels of the microbiota-produced N-formyl peptide, formyl-methionyl-leucyl-phenylalanine (fMLF), are elevated in high fat diet (HFD)- induced obese mice. Genetic or pharmacological inhibition of the N-formyl peptide receptor Fpr1 leads to increased insulin levels and improved glucose tolerance, dependent upon glucagon- like peptide-1 (GLP-1). Obese Fpr1-knockout (Fpr1-KO) mice also display an altered microbiome, exemplifying the dynamic relationship between host metabolism and microbiota.