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Structural biology of enzymes of the thiamin biosynthesis pathway
Abstract
Thiamin pyrophosphate is an essential cofactor of carbohydrate and branched-chain amino acid metabolism. Although its mechanistic role is well studied, the biosynthesis of thiamin has only recently been understood. Thiamin biosynthesis in Escherichia coli and Bacillus subtilis show some similarities, but diverge at key steps of thiazole formation. The biosynthesis of thiamin in eukaryotes is at a very early stage of understanding. Structural and mechanistic studies on thiamin biosynthetic enzymes have played a key role in increasing our understanding of thiamin pyrophosphate biosynthesis and have revealed unexpected evolutionary ties.
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“In the pathway for synthesis of the lower ligand, BzaA, BzaB and BzaF are homologous to ThiC, which catalyzes the first committed step of thiamine biosynthesis [141].”
From Evidence for corrin biosynthesis in the last universal common ancestor (2025) · cites this paper as [141]
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Metadata
- Authors
- Settembre, E., Begley, T. P., & Ealick, S. E.
- Affiliations
- Cornell University (US)
- Corresponding author
- Ealick, Steven E
- Venue
- Current Opinion in Structural Biology
- Publisher
- Elsevier BV
- Published
- 2003-12
- Volume
- 13
- Issue
- 6
- Pages
- 739-747
- ISSN
- 0959-440X (ISSN-L)
- OpenAlex
- W2080899182
- Cited by
- 110
- References
- 62
- Citations by year
- 2026: 2 · 2025: 2 · 2024: 4 · 2023: 5 · 2022: 4 · 2021: 3 · 2020: 6 · 2019: 2 · 2018: 5 · 2017: 4 · 2016: 4 · 2015: 4 · 2014: 4 · 2013: 3 · 2012: 1
- FWCI
- 0.54
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.elsevier.com/tdm/userlicense/1.0/ (tdm)
- Locations
- Current Opinion in Structural Biology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- W. M. Keck Foundation
- National Institutes of Health
- National Institute of Diabetes and Digestive and Kidney Diseases (DK44083)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Biochemical Acid Research Studies
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Structural Biology › Enzyme Structure and Function
- Health Sciences › Medicine › Clinical Neurology › Alcoholism and Thiamine Deficiency
- Keywords
- thiamine biosynthesis, thiamine pyrophosphate, thiazole biosynthesis, enzyme structure, enzyme mechanism, Escherichia coli, Bacillus subtilis, phylogenetic relationships, cofactor metabolism
- MeSH terms
- Bacteria, Multienzyme Complexes, Thiamine, Thiazoles, Signal Transduction
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