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Characterization of an anti-FLAG antibody binding protein in V. cholerae.


ABSTRACT: FLAG-tags are commonly used for protein abundance measurements and for identification of protein-protein interactions in living cells. We have observed that the cholera pathogen Vibrio cholerae encodes a FLAG-antibody-reactive protein and identified this protein as an outer membrane porin, Porin4, which contains a sequence very similar to the 3xFLAG epitope tag. We have demonstrated the binding affinity of the conserved peptide sequence (called Porin 4 tag) in Porin4 against monoclonal anti-FLAG M2 antibody. In addition, we created a porin4 deletion mutant, which can be used for background-less FLAG antibody detection experiments.

SUBMITTER: Shin JH 

PROVIDER: S-EPMC7357423 | biostudies-literature |

REPOSITORIES: biostudies-literature

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