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Differentiating Two Closely Related Alexandrium Species Using Comparative Quantitative Proteomics
toxins Article Differentiating Two Closely Related Alexandrium Species Using Comparative Quantitative Proteomics Bryan John J. Subong 1,2,* , Arturo O. Lluisma 1, Rhodora V. Azanza 1 and Lilibeth A. Salvador-Reyes 1,* 1 Marine Science Institute, University of the Philippines- Diliman, Velasquez Street, Quezon City 1101, Philippines; [email protected] (A.O.L.); [email protected] (R.V.A.) 2 Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo City, Tokyo 113-8654, Japan * Correspondence: [email protected] (B.J.J.S.); [email protected] (L.A.S.-R.) Abstract: Alexandrium minutum and Alexandrium tamutum are two closely related harmful algal bloom (HAB)-causing species with different toxicity. Using isobaric tags for relative and absolute quantita- tion (iTRAQ)-based quantitative proteomics and two-dimensional differential gel electrophoresis (2D-DIGE), a comprehensive characterization of the proteomes of A. minutum and A. tamutum was performed to identify the cellular and molecular underpinnings for the dissimilarity between these two species. A total of 1436 proteins and 420 protein spots were identified using iTRAQ-based proteomics and 2D-DIGE, respectively. Both methods revealed little difference (10–12%) between the proteomes of A. minutum and A. tamutum, highlighting that these organisms follow similar cellular and biological processes at the exponential stage. Toxin biosynthetic enzymes were present in both organisms. However, the gonyautoxin-producing A. minutum showed higher levels of osmotic growth proteins, Zn-dependent alcohol dehydrogenase and type-I polyketide synthase compared to the non-toxic A. tamutum. Further, A. tamutum had increased S-adenosylmethionine transferase that may potentially have a negative feedback mechanism to toxin biosynthesis. -
N-Carbamoylation of 2,4-Diaminobutyrate Reroutes the Outcome in Padanamide Biosynthesis
Chemistry & Biology Article N-Carbamoylation of 2,4-Diaminobutyrate Reroutes the Outcome in Padanamide Biosynthesis Yi-Ling Du,1 Doralyn S. Dalisay,1 Raymond J. Andersen,1,2 and Katherine S. Ryan1,* 1Department of Chemistry 2Department of Earth, Ocean and Atmospheric Sciences University of British Columbia, Vancouver, BC V6T 1Z1, Canada *Correspondence: [email protected] http://dx.doi.org/10.1016/j.chembiol.2013.06.013 SUMMARY literature. It is interesting that a compound identical to padana- mide A, named actinoramide A (Nam et al., 2011), was indepen- Padanamides are linear tetrapeptides notable for the dently reported from Streptomyces sp. CNQ-027. This actinomy- absence of proteinogenic amino acids in their struc- cete strain was isolated from sediment on the opposite side of the tures. In particular, two unusual heterocycles, (S)- Pacific Ocean, near San Diego, CA, suggesting a potentially wide 3-amino-2-oxopyrrolidine-1-carboxamide (S-Aopc) distribution of the padanamides/actinoramides. It is intriguing and (S)-3-aminopiperidine-2,6-dione (S-Apd), are that, whereas padanamide A and actinoramide A are identical, found at the C-termini of padanamides A and B, the minor compounds (actinoramides B and C) co-isolated from Streptomyces sp. CNQ-027 are unique (Figure 1A). Total respectively. Here we identify the padanamide synthesis of padanamides A and B was recently reported (Long biosynthetic gene cluster and carry out systematic et al., 2013), confirming the previous structural elucidations. gene inactivation studies. Our results show that The padanamides attracted our attention for their many padanamides are synthesized by highly dissociated unusual chemical features. -
Polyketide Biosynthesis Beyond the Type I, II and III Polyketide Synthase Paradigms Ben Shen
285 Polyketide biosynthesis beyond the type I, II and III polyketide synthase paradigms Ben Shen Recent literature on polyketide biosynthesis suggests that Three types of bacterial PKSs are known to date. First, polyketide synthases have much greater diversity in both type I PKSs are multifunctional enzymes that are orga- mechanism and structure than the current type I, II and III nized into modules, each of which harbors a set of distinct, paradigms. These examples serve as an inspiration for searching non-iteratively acting activities responsible for the cata- novel polyketide synthases to give new insights into polyketide lysis of one cycle of polyketide chain elongation, as biosynthesis and to provide new opportunities for combinatorial exemplified by the 6-deoxyerythromycin B synthase biosynthesis. (DEBS) for the biosynthesis of reduced polyketides (i.e. macrolides, polyethers and polyene) such as erythro- Addresses mycin A (1)(Figure 1a) [1]. Second, type II PKSs are Division of Pharmaceutical Sciences and Department of Chemistry, multienzyme complexes that carry a single set of iteratively University of Wisconsin, Madison, WI 53705, USA acting activities, as exemplified by the tetracenomycin e-mail: [email protected] PKS for the biosynthesis of aromatic polyketides (often polycyclic) such as tetracenomycin C (2)(Figure 1b) [2]. Current Opinion in Chemical Biology 2003, 7:285–295 Third, type III PKSs, also known as chalcone synthase- like PKSs, are homodimeric enzymes that essentially are This review comes from a themed section on iteratively acting condensing enzymes, as exemplified by Biocatalysis and biotransformation Edited by Tadhg Begley and Ming-Daw Tsai the RppA synthase for the biosynthesis of aromatic poly- ketides (often monocyclic or bicyclic), such as flavolin (3) 1367-5931/03/$ – see front matter (Figure 1c) [3]. -
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). -
Investigation and Engineering of Polyketide Biosynthetic Pathways
Utah State University DigitalCommons@USU All Graduate Theses and Dissertations Graduate Studies 12-2017 Investigation and Engineering of Polyketide Biosynthetic Pathways Lei Sun Utah State University Follow this and additional works at: https://digitalcommons.usu.edu/etd Part of the Biological Engineering Commons Recommended Citation Sun, Lei, "Investigation and Engineering of Polyketide Biosynthetic Pathways" (2017). All Graduate Theses and Dissertations. 6903. https://digitalcommons.usu.edu/etd/6903 This Dissertation is brought to you for free and open access by the Graduate Studies at DigitalCommons@USU. It has been accepted for inclusion in All Graduate Theses and Dissertations by an authorized administrator of DigitalCommons@USU. For more information, please contact [email protected]. INVESTIGATION AND ENGINEERING OF POLYKETIDE BIOSYNTHETIC PATHWAYS by Lei Sun A dissertation submitted in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSPHY in Biological Engineering Approved: ______________________ ____________________ Jixun Zhan, Ph.D. David W. Britt, Ph.D. Major Professor Committee Member ______________________ ____________________ Dong Chen, Ph.D. Jon Takemoto, Ph.D. Committee Member Committee Member ______________________ ____________________ Elizabeth Vargis, Ph.D. Mark R. McLellan, Ph.D. Committee Member Vice President for Research and Dean of the School of Graduate Studies UTAH STATE UNIVERSITY Logan, Utah 2017 ii Copyright© Lei Sun 2017 All Rights Reserved iii ABSTRACT Investigation and engineering of polyketide biosynthetic pathways by Lei Sun, Doctor of Philosophy Utah State University, 2017 Major Professor: Jixun Zhan Department: Biological Engineering Polyketides are a large family of natural products widely found in bacteria, fungi and plants, which include many clinically important drugs such as tetracycline, chromomycin, spirolaxine, endocrocin and emodin. -
Rewiring Yarrowia Lipolytica Toward Triacetic Acid Lactone for Materials Generation
Rewiring Yarrowia lipolytica toward triacetic acid lactone for materials generation Kelly A. Markhama,1, Claire M. Palmerb,1, Malgorzata Chwatkoa, James M. Wagnera, Clare Murraya, Sofia Vazqueza, Arvind Swaminathana, Ishani Chakravartya, Nathaniel A. Lynda, and Hal S. Alpera,b,2 aMcKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712; and bInstitute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712 Edited by Sang Yup Lee, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea, and approved January 22, 2018 (received for review December 6, 2017) Polyketides represent an extremely diverse class of secondary me- or challenging syntheses, this is not an option for any larger-scale tabolites often explored for their bioactive traits. These molecules are chemistry application. also attractive building blocks for chemical catalysis and polymeriza- Here, we focus on the interesting, yet simple, polyketide, tri- tion. However, the use of polyketides in larger scale chemistry acetic acid lactone (TAL) as it is derived from two common applications is stymied by limited titers and yields from both microbial polyketide precursors, acetyl–CoA and malonyl–CoA. TAL has and chemical production. Here, we demonstrate that an oleaginous been demonstrated as a platform chemical that can be converted organism (specifically, Yarrowia lipolytica) can overcome such produc- into a variety of valuable products traditionally derived from tion limitations owing to a natural propensity for high flux through fossil fuels including sorbic acid, a common food preservative acetyl–CoA. By exploring three distinct metabolic engineering strate- with a global demand of 100,000 t (1, 15–18). -
Substrate Channeling in Proline Metabolism Benjamin W
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by DigitalCommons@University of Nebraska University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Biochemistry -- Faculty Publications Biochemistry, Department of 2012 Substrate channeling in proline metabolism Benjamin W. Arentson University of Nebraska-Lincoln, [email protected] Nikhilesh Sanyal University of Nebraska-Lincoln, [email protected] Donald F. Becker University of Nebraska-Lincoln, [email protected] Follow this and additional works at: http://digitalcommons.unl.edu/biochemfacpub Part of the Biochemistry Commons, Biotechnology Commons, and the Other Biochemistry, Biophysics, and Structural Biology Commons Arentson, Benjamin W.; Sanyal, Nikhilesh; and Becker, Donald F., "Substrate channeling in proline metabolism" (2012). Biochemistry -- Faculty Publications. 303. http://digitalcommons.unl.edu/biochemfacpub/303 This Article is brought to you for free and open access by the Biochemistry, Department of at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Biochemistry -- Faculty Publications by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. NIH Public Access Author Manuscript Front Biosci. Author manuscript; available in PMC 2013 January 01. NIH-PA Author ManuscriptPublished NIH-PA Author Manuscript in final edited NIH-PA Author Manuscript form as: Front Biosci. ; 17: 375–388. Substrate channeling in proline metabolism Benjamin W. Arentson1, Nikhilesh Sanyal1, and Donald F. Becker1 1Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, USA Abstract Proline metabolism is an important pathway that has relevance in several cellular functions such as redox balance, apoptosis, and cell survival. Results from different groups have indicated that substrate channeling of proline metabolic intermediates may be a critical mechanism. -
The Role of the Iterative Modules in Polyketide Synthase Evolution
COMMENTARY COMMENTARY The role of the iterative modules in polyketide synthase evolution Martin Griningera,1 Polyketide synthases (PKSs) assemble activated car- the compound is reached (Fig. 1B). Probably, the best- boxylic acids to elaborate chemical compounds (1). studied representatives are PksA from the fungal genus The key synthetic step is the C-C bond-forming con- Aspergillus, initiating biosynthesis of the environmental densation of an acyl moiety (e.g., acetyl-coenzyme A carcinogen aflatoxin B1 (5), and the 6-methylsalicylic [CoA]) with an α-carboxyacyl moiety (e.g., malonyl- acid synthase (MSAS) from the fungus Penicillium pat- CoA) on release of CO2. The emerging β-ketoacyl ulum (6) (Fig. 1B). compound can optionally be further modified by three Since the synthesis is performed within single multi- accessory catalytic functions. Since this reaction se- domain proteins in recursive manner, the chemical quence can be repeated, with each elongation varying complexity of compounds derived from the iterative in accessory catalytic functions, polyketides can be rich systems is usually less sophisticated compared to in chemistry (Fig. 1A). Many polyketides are of pharma- compounds from the more versatile modular systems. ceutical relevance, among them several top-selling small This is the reason why iterative PKSs usually receive far molecule drugs (2): for example, antibiotics (e.g., eryth- less comment than the modular ones. In their PNAS romycin and tetracycline), antineoplastics (e.g., daunoru- article, Wang et al. (7) extend the relevance of iterative bicin), and immunosuppressants (e.g., rapamycin) (3). PKSs in several aspects: as efficient producers of nat- PKSs are subdivided into three categories: type I ural compounds, as targets for protein engineering, PKSs are large multifunctional proteins composed of and as an inherent part in the evolution of the PKS several catalytic and functional domains, type II PKSs protein family. -
Structural and Functional Analysis of Two Di-Domain Aromatase/Cyclases from Type II Polyketide Synthases
Structural and functional analysis of two di-domain aromatase/cyclases from type II polyketide synthases Grace Caldara-Festina,b,c,1, David R. Jacksona,b,c,1,2, Jesus F. Barajasa,b,c, Timothy R. Valentica,b,c, Avinash B. Patela,b,c, Stephanie Aguilara,b,c, MyChi Nguyena,b,c, Michael Voa,b,c, Avinash Khannaa,b,c, Eita Sasakid,e, Hung-wen Liud,e, and Shiou-Chuan Tsaia,b,c,2 aDepartment of Molecular Biology and Biochemistry, University of California, Irvine, CA 92697; bDepartment of Chemistry, University of California, Irvine, CA 92697; cDepartment of Pharmaceutical Sciences, University of California, Irvine, CA 92697; dDivision of Medicinal Chemistry, College of Pharmacy, University of Texas, Austin, TX 78712; and eDepartment of Chemistry, University of Texas, Austin, TX 78712 Edited by Janet L. Smith, University of Michigan, Ann Arbor, MI, and accepted by the Editorial Board November 4, 2015 (received for review July 2, 2015) Aromatic polyketides make up a large class of natural products The di-domain ARO/CYCs are found in both nonreducing with diverse bioactivity. During biosynthesis, linear poly-β-ketone and reducing PKSs (18, 24). In nonreducing systems, the di- intermediates are regiospecifically cyclized, yielding molecules domain ARO/CYCs regiospecifically cyclize a polyketide be- with defined cyclization patterns that are crucial for polyketide tween C7 and C12, followed by aromatization (18). In reducing bioactivity. The aromatase/cyclases (ARO/CYCs) are responsible systems, a ketoreductase (KR) first regiospecifically cyclizes the for regiospecific cyclization of bacterial polyketides. The two most linear poly-β-ketone from C12 to C7, followed by a highly specific common cyclization patterns are C7–C12 and C9–C14 cyclizations. -
Streptomyces Coelicolor Strains Lacking Polyprenol Phosphate Mannose Synthase and Protein O-Mannosyl Transferase Are Hyper-Susceptible to Multiple Antibiotics
This is a repository copy of Streptomyces coelicolor strains lacking polyprenol phosphate mannose synthase and protein O-mannosyl transferase are hyper-susceptible to multiple antibiotics. White Rose Research Online URL for this paper: https://eprints.whiterose.ac.uk/128020/ Version: Accepted Version Article: Howlett, Robert, Read, Nicholas, Varghese, Anpu S. et al. (3 more authors) (2018) Streptomyces coelicolor strains lacking polyprenol phosphate mannose synthase and protein O-mannosyl transferase are hyper-susceptible to multiple antibiotics. Microbiology. pp. 369-382. ISSN 1465-2080 https://doi.org/10.1099/mic.0.000605 Reuse Items deposited in White Rose Research Online are protected by copyright, with all rights reserved unless indicated otherwise. They may be downloaded and/or printed for private study, or other acts as permitted by national copyright laws. The publisher or other rights holders may allow further reproduction and re-use of the full text version. This is indicated by the licence information on the White Rose Research Online record for the item. Takedown If you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing [email protected] including the URL of the record and the reason for the withdrawal request. [email protected] https://eprints.whiterose.ac.uk/ Microb iology Streptomyces coelicolor strains lacking polyprenol phosphate mannose synthase and protein O-mannosyl transferase are hyper-susceptible to multiple antibiotics --Manuscript Draft-- Manuscript -
A Comprehensive Overview on Genomically Directed Assembly of Aromatic Polyketides and Macrolide Lactones Using Fungal Megasynthases
The Journal of Antibiotics (2011) 64, 9–17 & 2011 Japan Antibiotics Research Association All rights reserved 0021-8820/11 $32.00 www.nature.com/ja REVIEW ARTICLE A comprehensive overview on genomically directed assembly of aromatic polyketides and macrolide lactones using fungal megasynthases Takayoshi Saruwatari1, Alex P Praseuth2, Michio Sato1, Kohei Torikai1, Hiroshi Noguchi1 and Kenji Watanabe1 Fungal polyketide synthases (PKSs) catalyze a carbon–carbon bond forming reaction in an iterative manner using a variety of acyl-CoA molecules as substrates when biosynthesizing complex polyketides. Although most members from this class of natural products exhibit notable biological activities, often they are naturally produced in trace levels or cultivation of the analyte- producing organism is less than feasible. Appropriately, to contend with the former challenge, one must identify any translational bottleneck and perform functional analysis of the associated enzymes. In recent years, many gene clusters purportedly responsible for biosynthesizing polyketides have been identified and cataloged from a variety of fungal genomes including genes coding for iterative PKSs, particulary bikaverin, zearalenone and hypothemycin biosynthetic enzymes. Mounting appreciation of these highly specific codons and their translational consequence will afford scientists the ability to anticipate the fungal metabolite by correlating an organism’s genomic cluster to an appropriate biosynthetic system. It was observed in recent reports, the successful production of these recombinant enzymes using an Escherichia coli expression system which in turn conferred the anticipated metabolite in vitro. This review will focus on iterative PKSs responsible for biosynthesizing bikaverin, zearalenone and hypothemycin, and expand on befitting enzymatic reaction mechanisms and development of a highly versatile system that could potentially generate biologically active compounds. -
Fluoroacetate Resistance in Streptomyces Cattleya 3.1 Introduction 41 3.2 Materials and Methods 42 3.3 Results and Discussion 47 3.4 Conclusions 66 3.5 References 67
UC Berkeley UC Berkeley Electronic Theses and Dissertations Title Expanding the scope of organofluorine biochemistry through the study of natural and engineered systems Permalink https://escholarship.org/uc/item/9n89c8zv Author Walker, Mark Chalfant Publication Date 2013 Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California Expanding the scope of organofluorine biochemistry through the study of natural and engineered systems by Mark Chalfant Walker A dissertation submitted in partial satisfaction of the requirements for the degree of Doctor of Philosophy in Molecular and Cell Biology in the Graduate Division of the University of California, Berkeley Committee in charge: Professor Michelle C. Y. Chang, Chair Professor Judith P. Klinman Professor Susan Marqusee Professor Mathew B. Francis Spring 2013 Expanding the scope of organofluorine biochemistry through the study of natural and engineered systems © 2013 by Mark Chalfant Walker Abstract Expanding the scope of organofluorine biochemistry through the study of natural and engineered systems by Mark Chalfant Walker Doctor of Philosophy in Molecular and Cell Biology University of California, Berkeley Professor Michelle C. Y. Chang, Chair Fluorination has become a very useful tool in the design and optimization of bioactive small molecules ranging from pesticides to pharmaceuticals. Its small size allows a sterically conservative substitution for a hydrogen or hydroxyl, thus maintaining the overall size and shape of a molecule. However, the extreme electronegativity of fluorine can dramatically alter other properties of the molecule. As a result, the development of new methods for fluorine incorporation is currently a major focus in synthetic chemistry. It is our goal to use a complementary biosynthetic approach to use enzymes for the regio-selective incorporation of fluorine into complex natural product scaffolds through the fluoroacetate building block.