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-Structure paper
タイトル | Mapping the architecture of the initiating phosphoglycosyl transferase from O-antigen biosynthesis in a liponanoparticle. |
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ジャーナル・号・ページ | Elife, Vol. 12, Year 2024 |
掲載日 | 2024年2月15日 |
著者 | Greg J Dodge / Alyssa J Anderson / Yi He / Weijing Liu / Rosa Viner / Barbara Imperiali / |
PubMed 要旨 | Bacterial cell surface glycoconjugates are critical for cell survival and for interactions between bacteria and their hosts. Consequently, the pathways responsible for their biosynthesis have ...Bacterial cell surface glycoconjugates are critical for cell survival and for interactions between bacteria and their hosts. Consequently, the pathways responsible for their biosynthesis have untapped potential as therapeutic targets. The localization of many glycoconjugate biosynthesis enzymes to the membrane represents a significant challenge for expressing, purifying, and characterizing these enzymes. Here, we leverage cutting-edge detergent-free methods to stabilize, purify, and structurally characterize WbaP, a phosphoglycosyl transferase (PGT) from the (LT2) O-antigen biosynthesis. From a functional perspective, these studies establish WbaP as a homodimer, reveal the structural elements responsible for dimerization, shed light on the regulatory role of a domain of unknown function embedded within WbaP, and identify conserved structural motifs between PGTs and functionally unrelated UDP-sugar dehydratases. From a technological perspective, the strategy developed here is generalizable and provides a toolkit for studying other classes of small membrane proteins embedded in liponanoparticles beyond PGTs. |
リンク | Elife / PubMed:38358918 / PubMed Central |
手法 | EM (単粒子) |
解像度 | 4.1 Å |
構造データ | EMDB-41042, PDB-8t53: |
由来 |
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キーワード | TRANSFERASE / phosphoglycosyl transferase / liponanopaticle / SMALP / O-antigen / Salmonella enterica |