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Associative properties of theEscherichia coligalactose binding protein and maltose binding protein

Authors
Journal
Biochemical and Biophysical Research Communications
0006-291X
Publisher
Elsevier
Publication Date
Volume
105
Issue
2
Identifiers
DOI: 10.1016/0006-291x(82)91459-0
Disciplines
  • Biology

Abstract

Abstract The periplasmic galactose binding protein and maltose binding protein of Escherichia coli are recovered mostly in dimeric form when purified, from osmotically-shocked bacteria, in the presence of protease inhibitors and 2-mercaptoethanol without dialysis and concentration of the shock fluid. The specific ligands, galactose (but not glucose) for galactose binding protein, and maltose for maltose binding protein, provoque the monomerisation of the dimeric native forms. These results are discussed in relation to the function of both binding proteins in transport and chemotaxis.

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