PMID- 33824341 OWN - NLM STAT- MEDLINE DCOM- 20210414 LR - 20230106 IS - 2041-1723 (Electronic) IS - 2041-1723 (Linking) VI - 12 IP - 1 DP - 2021 Apr 6 TI - Biochemical and structural characterization of the BioZ enzyme engaged in bacterial biotin synthesis pathway. PG - 2056 LID - 10.1038/s41467-021-22360-4 [doi] LID - 2056 AB - Biotin is an essential micro-nutrient across the three domains of life. The paradigm earlier step of biotin synthesis denotes "BioC-BioH" pathway in Escherichia coli. Here we report that BioZ bypasses the canonical route to begin biotin synthesis. In addition to its origin of Rhizobiales, protein phylogeny infers that BioZ is domesticated to gain an atypical role of beta-ketoacyl-ACP synthase III. Genetic and biochemical characterization demonstrates that BioZ catalyzes the condensation of glutaryl-CoA (or ACP) with malonyl-ACP to give 5'-keto-pimeloyl ACP. This intermediate proceeds via type II fatty acid synthesis (FAS II) pathway, to initiate the formation of pimeloyl-ACP, a precursor of biotin synthesis. To further explore molecular basis of BioZ activity, we determine the crystal structure of Agrobacterium tumefaciens BioZ at 1.99 A, of which the catalytic triad and the substrate-loading tunnel are functionally defined. In particular, we localize that three residues (S84, R147, and S287) at the distant bottom of the tunnel might neutralize the charge of free C-carboxyl group of the primer glutaryl-CoA. Taken together, this study provides molecular insights into the BioZ biotin synthesis pathway. FAU - Zhang, Sitao AU - Zhang S AD - Laboratory of Innate Immune Biology of Fujian Province, Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, Biomedical Research Center of South China, Key Laboratory of OptoElectronic Science and Technology for Medicine of the Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou, Fujian, China. AD - Department of Pathogen Biology & Microbiology and General Intensive Care Unit of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China. FAU - Xu, Yongchang AU - Xu Y AD - Department of Pathogen Biology & Microbiology and General Intensive Care Unit of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China. FAU - Guan, Hongxin AU - Guan H AD - Laboratory of Innate Immune Biology of Fujian Province, Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, Biomedical Research Center of South China, Key Laboratory of OptoElectronic Science and Technology for Medicine of the Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou, Fujian, China. FAU - Cui, Tao AU - Cui T AD - School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China. FAU - Liao, Yuling AU - Liao Y AD - Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, China. FAU - Wei, Wenhui AU - Wei W AD - Department of Pathogen Biology & Microbiology and General Intensive Care Unit of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China. FAU - Li, Jun AU - Li J AD - Department of Pathogen Biology & Microbiology and General Intensive Care Unit of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China. AD - Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China. FAU - Hassan, Bachar H AU - Hassan BH AD - Stony Brook University, Stony Brook, NY, USA. FAU - Zhang, Huimin AU - Zhang H AD - Department of Pathogen Biology & Microbiology and General Intensive Care Unit of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China. AD - Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA. FAU - Jia, Xu AU - Jia X AD - Non-coding RNA and Drug Discovery Key Laboratory of Sichuan Province, Chengdu Medical College, Chengdu, Sichuan, China. FAU - Ouyang, Songying AU - Ouyang S AUID- ORCID: 0000-0002-1120-1524 AD - Laboratory of Innate Immune Biology of Fujian Province, Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, Biomedical Research Center of South China, Key Laboratory of OptoElectronic Science and Technology for Medicine of the Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou, Fujian, China. ouyangsy@fjnu.edu.cn. FAU - Feng, Youjun AU - Feng Y AUID- ORCID: 0000-0001-8083-0175 AD - Department of Pathogen Biology & Microbiology and General Intensive Care Unit of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China. fengyj@zju.edu.cn. AD - Non-coding RNA and Drug Discovery Key Laboratory of Sichuan Province, Chengdu Medical College, Chengdu, Sichuan, China. fengyj@zju.edu.cn. AD - College of Animal Science, Zhejiang University, Hangzhou, Zhejiang, China. fengyj@zju.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210406 PL - England TA - Nat Commun JT - Nature communications JID - 101528555 RN - 0 (Acyl Carrier Protein) RN - 0 (Acyl Coenzyme A) RN - 0 (Escherichia coli Proteins) RN - 3131-84-8 (glutaryl-coenzyme A) RN - 6SO6U10H04 (Biotin) SB - IM MH - Acyl Carrier Protein/metabolism MH - Acyl Coenzyme A/metabolism MH - Agrobacterium/growth & development MH - Amino Acid Sequence MH - Biocatalysis MH - *Biosynthetic Pathways MH - Biotin/*biosynthesis MH - Crystallography, X-Ray MH - Escherichia coli/*metabolism MH - Escherichia coli Proteins/*chemistry/*metabolism MH - Molecular Docking Simulation MH - Phylogeny MH - Protein Multimerization MH - Structural Homology, Protein MH - Substrate Specificity PMC - PMC8024396 COIS- The authors declare no competing interests. EDAT- 2021/04/08 06:00 MHDA- 2021/04/15 06:00 PMCR- 2021/04/06 CRDT- 2021/04/07 06:05 PHST- 2019/11/22 00:00 [received] PHST- 2021/03/12 00:00 [accepted] PHST- 2021/04/07 06:05 [entrez] PHST- 2021/04/08 06:00 [pubmed] PHST- 2021/04/15 06:00 [medline] PHST- 2021/04/06 00:00 [pmc-release] AID - 10.1038/s41467-021-22360-4 [pii] AID - 22360 [pii] AID - 10.1038/s41467-021-22360-4 [doi] PST - epublish SO - Nat Commun. 2021 Apr 6;12(1):2056. doi: 10.1038/s41467-021-22360-4.