1lom
From Proteopedia
CYANOVIRIN-N DOUBLE MUTANT P51S S52P
Structural highlights
FunctionCVN_NOSEL Mannose-binding lectin.[1] [2] 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 PubMedCyanovirin-N (CV-N) is a potent 11 kDa HIV-inactivating protein that binds with high affinity to the HIV surface envelope protein gp120. A double mutant P51S/S52P of CV-N was engineered by swapping two critical hinge-region residues Pro51 and Ser52. This mutant has biochemical and biophysical characteristics equivalent to the wild-type CV-N and its structure resembles that of wild-type CV-N. However, the mutant shows a different orientation in the hinge region that connects two domains of the protein. The observation that this double mutant crystallizes under a wide variety of conditions challenges some of the current hypotheses on domain swapping and on the role of hinge-region proline residues in domain orientation. The current structure contributes to the understanding of domain swapping in cyanovirins, permitting rational design of domain-swapped CV-N mutants. Domain-swapped structure of a mutant of cyanovirin-N.,Botos I, Mori T, Cartner LK, Boyd MR, Wlodawer A Biochem Biophys Res Commun. 2002 May 31;294(1):184-90. PMID:12054761[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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