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Default Solution NMR structure of CD1104B from pathogenic Clostridium difficile reveals a distinct ?-helical architecture and provides first structural representative of protein domain family PF14203.

Solution NMR structure of CD1104B from pathogenic Clostridium difficile reveals a distinct ?-helical architecture and provides first structural representative of protein domain family PF14203.

Related Articles Solution NMR structure of CD1104B from pathogenic Clostridium difficile reveals a distinct ?-helical architecture and provides first structural representative of protein domain family PF14203.

J Struct Funct Genomics. 2013 Sep 19;

Authors: Pulavarti SV, Eletsky A, Lee HW, Acton TB, Xiao R, Everett JK, Prestegard JH, Montelione GT, Szyperski T

Abstract
A high-quality structure of the 68-residue protein CD1104B from Clostridium difficile strain 630 exhibits a distinct all ?-helical fold. The structure presented here is the first representative of bacterial protein domain family PF14203 (currently 180 members) of unknown function (DUF4319) and reveals that the side-chains of the only two strictly conserved residues (Glu 8 and Lys 48) form a salt bridge. Moreover, these two residues are located in the vicinity of the largest surface cleft which is predicted to contribute to a surface area involved in protein-protein interactions. This, along with its coding in transposon CTn4, suggests that CD1104B (and very likely all members of Pfam 14203) functions by interacting with other proteins required for the transfer of transposons between different bacterial species.


PMID: 24048810 [PubMed - as supplied by publisher]



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