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Conserved transmembrane glycine residues in the Shigella flexneri polysaccharide co-polymerase protein WzzB influence protein–protein interactions.

Microbiology.. 2016-06; 
Papadopoulos M, Tran EN, Murray GL, Morona R.
Products/Services Used Details Operation
...with either polyclonal WzzB SF antibodies (prepared by Daniels & Morona, 1999 ) at 1 : 500 dilution, monoclonal anti-HIS (Genscript #A00186…

摘要

The O antigen (Oag) component of lipopolysaccharides (LPS) is crucial for virulence and Oag chain-length regulation is controlled by the polysaccharide co-polymerase class 1 (PCP1) proteins. Crystal structure analyses indicate that structural conservation among PCP1 proteins is highly maintained, however the mechanism of Oag modal-chain-length control remains to be fully elucidated. Shigella flexneri PCP1 protein WzzBSF confers a modal-chain length of 10-17 Oag repeat units (RUs), whereas the Salmonella enterica Typhimurium PCP1 protein WzzBST confers a modal-chain length of ~16-28 Oag RUs. Both proteins share >70 % overall sequence identity and contain two transmembrane (TM1 and TM2) regions, whereby a conse... More

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