Antibody-Mediated Modification of the Binding Properties of a Protein Related to Galactose Transport
AUTOR(ES)
Rotman, Boris
RESUMO
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.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=251354Documentos Relacionados
- Antibody-mediated cytotoxicity in rheumatoid arthritis.
- New Concepts in Antibody-Mediated Immunity
- Diversity of Antibody-Mediated Immunity at the Mucosal Barrier
- Antibody-mediated neutralization in vivo of infectious papillomaviruses.
- Antibody-Mediated Targeting of an Adenovirus Vector Modified To Contain a Synthetic Immunoglobulin G-Binding Domain in the Capsid