9egi
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Crystal Structure of EgtUC binding domain mutant T274G bound to L-Ergothioneine from S. pneumoniae
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Structural highlights
FunctionEGTUB_STRP2 Part of an ABC transporter complex EgtU required for the uptake of ergothioneine (EGT), a natural low-molecular weight (LMW) thiol antioxidant (PubMed:36481738). Responsible for the translocation of the substrate across the membrane (PubMed:36481738). Also contains a C-terminal periplasmic solute-binding domain (SBD) which binds to EGT with sub-micromolar affinity (PubMed:36481738). Binds L-hercynine about 10,000-fold less tightly than EGT (PubMed:36481738). Cannot bind the structurally similar compounds L-histidine, proline-betaine, choline, ectoine, carnitine or dimethylpropiothetin (PubMed:36481738).[1] References
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This page was last modified 06:18, 26 November 2025.