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The crystal structure of the W145A variant of TpMglB-2 (Tp0684) with bound ligandThe crystal structure of the W145A variant of TpMglB-2 (Tp0684) with bound ligand
Structural highlights
FunctionMGLB_TREPA May be involved in the transport of sugars. May have a role in chemotaxis. Publication Abstract from PubMedPreviously, we determined the crystal structure of apo-TpMglB-2, a D-glucose-binding component of a putative ABC transporter from the syphilis spirochete Treponema pallidum. The protein had an unusual topology for this class of proteins, raising the question of whether the D-glucose-binding mode would be different in TpMglB-2. Here, we present the crystal structures of a variant of TpMglB-2 with and without D-glucose bound. The structures demonstrate that, despite its aberrant topology, the protein undergoes conformational changes and binds D-glucose similarly to other Mgl-type proteins, likely facilitating D-glucose uptake in T. pallidum. This article is protected by copyright. All rights reserved. Crystal structures of MglB-2 (TP0684), a topologically variant D-glucose-binding protein from Treponema pallidum, reveal a ligand-induced conformational change.,Brautigam CA, Deka RK, Liu WZ, Norgard MV Protein Sci. 2018 Jan 10. doi: 10.1002/pro.3373. PMID:29318719[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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