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. 1972 Sep;111(3):791–796. doi: 10.1128/jb.111.3.791-796.1972

Antibody-Mediated Modification of the Binding Properties of a Protein Related to Galactose Transport

Boris Rotman 1, John H Ellis Jr 1
PMCID: PMC251354  PMID: 4559829

Abstract

A galactose-binding protein related to the mglP transport system of Escherichia coli increases its affinity and binding capacity for the substrate when exposed to both d-galactose and specific antibodies. For this increase to occur, the binding protein has to be in contact with d-galactose for at least 2 min prior to the addition of the antibodies. This reaction was used to show that other substrates of the mglP transport system compete with galactose for a site(s) of the binding protein and that the degree of competition is comparable to that observed in vivo. A model for substrate translocation is presented postulating a cellular component that can induce conformational changes in the galactose-binding protein similar to those caused by antibodies.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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