title: The structure of D-galactose-binding protein at 4.1 A resolution looks like L-arabinose-binding protein.
abstract: The structure of D-galactose-binding protein, a receptor for both high affinity active transport system and chemotaxis in Escherichia coli, has been solved at 4.1 A resolution using three heavy atom derivatives. The molecule is ellipsoidal with dimensions of about 65 X 35 X 35 A. The overall shape of the molecule and the indication that the molecule consists of two domains separated by a cleft are reminiscent of the structure of L-arabinose-binding protein.
mesh_terms: D001089:Arabinose; D002135:Calcium-Binding Proteins; D002352:Carrier Proteins; D004926:Escherichia coli / Q000032:analysis*; D029968:Escherichia coli Proteins; D005690:Galactose / Q000378:metabolism*; D009004:Monosaccharide Transport Proteins; D033902:Periplasmic Binding Proteins; D011092:Polyethylene Glycols; D011487:Protein Conformation; D014961:X-Ray Diffraction
chemical_list: C016242:AraF protein, E coli; D002135:Calcium-Binding Proteins; D002352:Carrier Proteins; D029968:Escherichia coli Proteins; D009004:Monosaccharide Transport Proteins; D033902:Periplasmic Binding Proteins; C023550:galactose-binding protein; D011092:Polyethylene Glycols; D001089:Arabinose; D005690:Galactose