1kv5

Structure of Trypanosoma brucei brucei TIM with the salt-bridge-forming residue Arg191 mutated to Ser

spinqualitylabelsall models 1kv5, resolution 1.65Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1kv5 is a 2 chain structure with sequence from Trypanosoma brucei brucei. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.65Å Ligands: DTT, GOL, PGA, SO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function TPIS_TRYBB Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Triosephosphate isomerase (TIM) has a conserved salt bridge 20 A away from both the active site and the dimer interface. In this study, four salt bridge mutants of Trypanosoma brucei brucei TIM were characterized. The folding and stability of the mutants are impaired compared to the wild-type enzyme. This salt bridge is part of a hydrogen bonding network which tethers the C-terminal beta7alpha7beta8alpha8 unit to the bulk of the protein. In the variants D227N, D227A, and R191S, this network is preserved, as can be deduced from the structure of the R191S variant. In the R191A variant, the side chain at position 191 cannot contribute to this network. Also the catalytic power of this variant is most affected. The importance of the conserved Arg191-Asp227 salt bridge of triosephosphate isomerase for folding, stability, and catalysis.,Kursula I, Partanen S, Lambeir AM, Wierenga RK FEBS Lett. 2002 May 8;518(1-3):39-42. PMID:11997014 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Triose phosphate isomerase 3D structures

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