1
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Alzahrani HA. Quinoline-2-one derivatives as promising antibacterial agents against multidrug-resistant Gram-positive bacterial strains. Braz J Microbiol 2023; 54:2799-2805. [PMID: 37831330 PMCID: PMC10689604 DOI: 10.1007/s42770-023-01132-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 09/15/2023] [Indexed: 10/14/2023] Open
Abstract
This study describes the discovery of a variety of quinoline2-one derivatives with significant antibacterial action vs a spectrum of multidrug-resistant Gram-positive bacterial strains, especially methicillin-resistant Staphylococcus aureus (MRSA). Compounds 6c, 6l, and 6o exhibited significant antibacterial activity versus the Gram-positive bacterial pathogens evaluated. In comparison to the reference daptomycin, compound 6c demonstrated the most effective activity among the assessed derivatives, with MIC concentrations of 0.75 μg/mL versus MRSA and VRE and 2.50 μg/mL against MRSE. We also reported on these compounds' biofilm and dihydrofolate reductase inhibitory activities. Compound 6c showed the greatest antibiofilm action in a dose-dependent way and a substantial decrease of biofilm development in the MRSA ACL51 strain at concentrations of 0.5, 0.25, and 0.12 MIC, with reductions of 79%, 55%, and 38%, consecutively, whereas the corresponding values for vancomycin were 20%, 12%, and 9%. These findings imply that these quinoline compounds could be used to develop a new category of antibiotic representatives to prevent Gram-positive drug-resistant bacterial strains.
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Affiliation(s)
- Hayat Ali Alzahrani
- Medical Laboratory Technology Department, Applied Medical Science College, Northern Border University, Arar, Saudi Arabia.
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2
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Son YJ, Kim YR, Oh SH, Jung S, Ciufolini MA, Hwang HJ, Kwak JH, Pai H. Micrococcin P2 Targets Clostridioides difficile. JOURNAL OF NATURAL PRODUCTS 2022; 85:1928-1935. [PMID: 35816693 DOI: 10.1021/acs.jnatprod.2c00120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Clostridioides difficile infection is a global public health threat. Extensive in vitro assays using clinical isolates have identified micrococcin P2 (MP2, 1) as a particularly effective anti-C. difficile agent. MP2 possesses a mode of action that differs from other antibiotics and pharmacokinetic properties that render it especially promising. Its time-kill studies have been investigated using hypervirulent C. difficile ribotype 027. DSS (dextran sulfate sodium)-induced in vivo mouse studies with that strain indicate that 1 is better than vancomycin and fidaxomicin. Thus, micrococcin P2 is a valuable platform to be exploited for the development of new anti-C. difficile antibiotics.
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Affiliation(s)
- Young-Jin Son
- A&J Science Co., Ltd., 80 Chumbok Road, Dong Gu, Daegu, 41061, Republic of Korea
- Department of Agricultural Biotechnology, Seoul National University, 1 Gwanak Road, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Young-Rok Kim
- School of Life Science, Handong Global University, 558 Handong Road, Heunghae-eup, Buk-gu, Pohang, 37554, Republic of Korea
| | - Sang-Hun Oh
- School of Life Science, Handong Global University, 558 Handong Road, Heunghae-eup, Buk-gu, Pohang, 37554, Republic of Korea
| | - Sungji Jung
- School of Life Science, Handong Global University, 558 Handong Road, Heunghae-eup, Buk-gu, Pohang, 37554, Republic of Korea
| | - Marco A Ciufolini
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6K 1Z1, Canada
| | - Hee-Jong Hwang
- A&J Science Co., Ltd., 80 Chumbok Road, Dong Gu, Daegu, 41061, Republic of Korea
| | - Jin-Hwan Kwak
- School of Life Science, Handong Global University, 558 Handong Road, Heunghae-eup, Buk-gu, Pohang, 37554, Republic of Korea
| | - Hyunjoo Pai
- Department of Internal Medicine, College of Medicine, Hanyang University, 222 Wangsimni Road, Seongdong-gu, Seoul, 04763, Republic of Korea
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3
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Hwang HJ, Son YJ, Kim D, Lee J, Shin YJ, Kwon Y, Ciufolini MA. Diversity-oriented routes to thiopeptide antibiotics: total synthesis and biological evaluation of micrococcin P2. Org Biomol Chem 2022; 20:1893-1899. [PMID: 34908070 DOI: 10.1039/d1ob02145a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We report the first total synthesis of micrococcin P2 (MP2, 1) by a diversity-oriented route that incorporates a number of refinements relative to earlier syntheses. Biological data regarding the activity of 1 against a range of human pathogens are also provided. Furthermore, we disclose a chemical property of MP2 that greatly facilitates medicinal chemistry work in the micrococcin area and describe a method to obtain MP2 by fermentation in B. subtilis.
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Affiliation(s)
- Hee-Jong Hwang
- A&J Science Co., Ltd, 80 Chumbok Ro, Dong Gu, Daegu, 41061, Republic of Korea.
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6 K 1Z1, Canada.
| | - Young-Jin Son
- A&J Science Co., Ltd, 80 Chumbok Ro, Dong Gu, Daegu, 41061, Republic of Korea.
- Department of Agricultural Biotechnology, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Dahyun Kim
- A&J Science Co., Ltd, 80 Chumbok Ro, Dong Gu, Daegu, 41061, Republic of Korea.
| | - Jusuk Lee
- A&J Science Co., Ltd, 80 Chumbok Ro, Dong Gu, Daegu, 41061, Republic of Korea.
| | - Yun-Jeong Shin
- Department of Agricultural Biotechnology, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Yonghoon Kwon
- Department of Agricultural Biotechnology, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Marco A Ciufolini
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6 K 1Z1, Canada.
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4
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Chan DCK, Burrows LL. Thiocillin and micrococcin exploit the ferrioxamine receptor of Pseudomonas aeruginosa for uptake. J Antimicrob Chemother 2021; 76:2029-2039. [PMID: 33907816 DOI: 10.1093/jac/dkab124] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/16/2021] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Thiopeptides are a class of antibiotics that are active against Gram-positive bacteria and inhibit translation. They were considered inactive against Gram-negative bacteria due to their inability to cross the outer membrane. However, we discovered previously that a member of this class, thiostrepton (TS), has activity against Pseudomonas aeruginosa and Acinetobacter baumannii under iron-limiting conditions. TS hijacks the pyoverdine siderophore receptors of P. aeruginosa to cross the outer membrane and synergizes with iron chelators. OBJECTIVES To test other thiopeptides for antimicrobial activity against P. aeruginosa and determine their mechanism of uptake, action and spectrum of activity. METHODS Eight thiopeptides were screened in chequerboard assays against a mutant of P. aeruginosa PA14 lacking both pyoverdine receptors. Thiopeptides that retain activity against a pyoverdine receptor-null mutant may use alternative siderophore receptors for entry. Susceptibility testing against siderophore receptor mutants was used to determine thiopeptide mechanism of uptake. RESULTS The thiopeptides thiocillin (TC) and micrococcin (MC) use the ferrioxamine siderophore receptor (FoxA) for uptake and inhibit the growth of P. aeruginosa at low micromolar concentrations. The activity of TC required the TonB-ExbBD system used to energize siderophore uptake. TC acted through its canonical mechanism of action of translation inhibition. CONCLUSIONS Multiple thiopeptides have antimicrobial activity against P. aeruginosa, countering the historical assumption that they cannot cross the outer membrane. These results demonstrate the potential for thiopeptides to act as antipseudomonal antibiotics.
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Affiliation(s)
- Derek C K Chan
- Department of Biochemistry and Biomedical Sciences, McMaster Children's Hospital, 1280 Main Street West, Hamilton, ON L8S 4K1, Canada.,Michael G. DeGroote Institute for Infectious Diseases Research, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada
| | - Lori L Burrows
- Department of Biochemistry and Biomedical Sciences, McMaster Children's Hospital, 1280 Main Street West, Hamilton, ON L8S 4K1, Canada.,Michael G. DeGroote Institute for Infectious Diseases Research, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada
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5
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Bogart JW, Kramer NJ, Turlik A, Bleich RM, Catlin DS, Schroeder FC, Nair SK, Williamson RT, Houk KN, Bowers AA. Interception of the Bycroft-Gowland Intermediate in the Enzymatic Macrocyclization of Thiopeptides. J Am Chem Soc 2020; 142:13170-13179. [PMID: 32609512 PMCID: PMC7429253 DOI: 10.1021/jacs.0c05639] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Thiopeptides are a broad class of macrocyclic, heavily modified peptide natural products that are unified by the presence of a substituted, nitrogen-containing heterocycle core. Early work indicated that this core might be fashioned from two dehydroalanines by an enzyme-catalyzed aza-[4 + 2] cycloaddition to give a cyclic-hemiaminal intermediate. This common intermediate could then follow a reductive path toward a dehydropiperidine, as in the thiopeptide thiostrepton, or an aromatization path to yield the pyridine groups observed in many other thiopeptides. Although several of the enzymes proposed to perform this cycloaddition have been reconstituted, only pyridine products have been isolated and any hemiaminal intermediates have yet to be observed. Here, we identify the conditions and substrates that decouple the cycloaddition from subsequent steps and allow interception and characterization of this long hypothesized intermediate. Transition state modeling indicates that the key amide-iminol tautomerization is the major hurdle in an otherwise energetically favorable cycloaddition. An anionic model suggests that deprotonation and polarization of this amide bond by TbtD removes this barrier and provides a sufficient driving force for facile (stepwise) cycloaddition. This work provides evidence for a mechanistic link between disparate cyclases in thiopeptide biosynthesis.
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Affiliation(s)
- Jonathan W. Bogart
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Nicholas J. Kramer
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Aneta Turlik
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA
| | - Rachel M. Bleich
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Daniel S. Catlin
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
| | - Frank C. Schroeder
- Boyce Thompson Institute and Department of Chemistry and Chemical Biology, Ithaca, New York 14853, USA
| | - Satish K. Nair
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
- Center for Biophysics and Computational Biology, University of Illinois at Urbana-Champaign, Illinois 61801, USA
| | - R. Thomas Williamson
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, North Carolina 28403, USA
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA
| | - Albert A. Bowers
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
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6
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Vinogradov AA, Suga H. Introduction to Thiopeptides: Biological Activity, Biosynthesis, and Strategies for Functional Reprogramming. Cell Chem Biol 2020; 27:1032-1051. [PMID: 32698017 DOI: 10.1016/j.chembiol.2020.07.003] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/21/2020] [Accepted: 07/01/2020] [Indexed: 12/16/2022]
Abstract
Thiopeptides (also known as thiazolyl peptides) are structurally complex natural products with rich biological activities. Known for over 70 years for potent killing of Gram-positive bacteria, thiopeptides are experiencing a resurgence of interest in the last decade, primarily brought about by the genomic revolution of the 21st century. Every area of thiopeptide research-from elucidating their biological function and biosynthesis to expanding their structural diversity through genome mining-has made great strides in recent years. These advances lay the foundation for and inspire novel strategies for thiopeptide engineering. Accordingly, a number of diverse approaches are being actively pursued in the hope of developing the next generation of natural-product-inspired therapeutics. Here, we review the contemporary understanding of thiopeptide biological activities, biosynthetic pathways, and approaches to structural and functional reprogramming, with a special focus on the latter.
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Affiliation(s)
- Alexander A Vinogradov
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Hiroaki Suga
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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7
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Christy MP, Johnson T, McNerlin CD, Woodard J, Nelson AT, Lim B, Hamilton TL, Freiberg KM, Siegel D. Total Synthesis of Micrococcin P1 through Scalable Thiazole Forming Reactions of Cysteine Derivatives and Nitriles. Org Lett 2020; 22:2365-2370. [DOI: 10.1021/acs.orglett.0c00202] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mitchell P. Christy
- Department of Chemistry & Biochemistry, University of California—San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Trevor Johnson
- Department of Chemistry & Biochemistry, University of California—San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Clare D. McNerlin
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0934, United States
| | - John Woodard
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0934, United States
| | - Andrew T. Nelson
- Department of Chemistry, University of Texas at Austin, 105 East 24th Street, A5300, Austin, Texas 78712-1224, United States
- School of Medicine, University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555, United States
| | - Bryant Lim
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0934, United States
| | - Tiffany L. Hamilton
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0934, United States
| | - Kaitlyn M. Freiberg
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0934, United States
| | - Dionicio Siegel
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0934, United States
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8
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Abstract
This Review is devoted to the chemistry of macrocyclic peptides having heterocyclic fragments in their structure. These motifs are present in many natural products and synthetic macrocycles designed against a particular biochemical target. Thiazole and oxazole are particularly common constituents of naturally occurring macrocyclic peptide molecules. This frequency of occurrence is because the thiazole and oxazole rings originate from cysteine, serine, and threonine residues. Whereas other heteroaryl groups are found less frequently, they offer many insightful lessons that range from conformational control to receptor/ligand interactions. Many options to develop new and improved technologies to prepare natural products have appeared in recent years, and the synthetic community has been pursuing synthetic macrocycles that have no precedent in nature. This Review attempts to summarize progress in this area.
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Affiliation(s)
- Ivan V Smolyar
- Department of Chemistry , Moscow State University , Leninskije Gory , 199991 Moscow , Russia
| | - Andrei K Yudin
- Davenport Research Laboratories, Department of Chemistry , University of Toronto , 80 St. George Street , Toronto , Ontario M5S 3H6 , Canada
| | - Valentine G Nenajdenko
- Department of Chemistry , Moscow State University , Leninskije Gory , 199991 Moscow , Russia
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9
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Abstract
This review describes a selection of macrocyclic natural products and structurally modified analogs containing peptidic and non-peptidic elements as structural features that potentially modulate cellular permeability. Examples range from exclusively peptidic structures like cyclosporin A or phepropeptins to compounds with mostly non-peptidic character, such as telomestatin or largazole. Furthermore, semisynthetic approaches and synthesis platforms to generate general and focused libraries of compounds at the interface of cyclic peptides and non-peptidic macrocycles are discussed.
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10
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Teng P, Li C, Peng Z, Anne Marie V, Nimmagadda A, Su M, Li Y, Sun X, Cai J. Facilely accessible quinoline derivatives as potent antibacterial agents. Bioorg Med Chem 2018; 26:3573-3579. [PMID: 29858158 DOI: 10.1016/j.bmc.2018.05.031] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/14/2018] [Accepted: 05/21/2018] [Indexed: 01/22/2023]
Abstract
Quinoline compounds have been extensively explored as anti-malaria and anti-cancer agents for decades and show profound functional bioactivities, however, the studies of these compounds in other medicinal fields have lagged dramatically. In this study, we report the development of a series of facilely accessible quinoline derivatives that display potent antibacterial activity against a panel of multidrug-resistant Gram-positive bacterial strains, especially C. difficile. We also demonstrated that these molecules are effective in vivo against C. difficile. These results revealed that these types of quinoline compounds could serve as prototypes for the development of an appealing class of antibiotic agents used to combat Gram-positive drug-resistant bacterial strains, including C. difficile.
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Affiliation(s)
- Peng Teng
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA
| | - Chunhui Li
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Down Blvd, Tampa, FL 33612, USA; Department of Infection Control Center of Xiangya Hospital, Central South University, Changsha 410008, China
| | - Zhong Peng
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Down Blvd, Tampa, FL 33612, USA; State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Vanderschouw Anne Marie
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA
| | - Alekhya Nimmagadda
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA
| | - Ma Su
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA
| | - Yaqiong Li
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA
| | - Xingmin Sun
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Down Blvd, Tampa, FL 33612, USA.
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA.
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Burkhart BJ, Schwalen CJ, Mann G, Naismith JH, Mitchell DA. YcaO-Dependent Posttranslational Amide Activation: Biosynthesis, Structure, and Function. Chem Rev 2017; 117:5389-5456. [PMID: 28256131 DOI: 10.1021/acs.chemrev.6b00623] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
With advances in sequencing technology, uncharacterized proteins and domains of unknown function (DUFs) are rapidly accumulating in sequence databases and offer an opportunity to discover new protein chemistry and reaction mechanisms. The focus of this review, the formerly enigmatic YcaO superfamily (DUF181), has been found to catalyze a unique phosphorylation of a ribosomal peptide backbone amide upon attack by different nucleophiles. Established nucleophiles are the side chains of Cys, Ser, and Thr which gives rise to azoline/azole biosynthesis in ribosomally synthesized and posttranslationally modified peptide (RiPP) natural products. However, much remains unknown about the potential for YcaO proteins to collaborate with other nucleophiles. Recent work suggests potential in forming thioamides, macroamidines, and possibly additional post-translational modifications. This review covers all knowledge through mid-2016 regarding the biosynthetic gene clusters (BGCs), natural products, functions, mechanisms, and applications of YcaO proteins and outlines likely future research directions for this protein superfamily.
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Affiliation(s)
| | | | - Greg Mann
- Biomedical Science Research Complex, University of St Andrews , BSRC North Haugh, St Andrews KY16 9ST, United Kingdom
| | - James H Naismith
- Biomedical Science Research Complex, University of St Andrews , BSRC North Haugh, St Andrews KY16 9ST, United Kingdom.,State Key Laboratory of Biotherapy, Sichuan University , Sichuan, China
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