Bacterial Periplasmic Binding Proteins
نویسنده
چکیده
The cell envelope of gram-negative bacteria includes inner and outer membranes with the periplasmic space in between. The transport systems for many nutrients in these organisms include components in both the periplasm and the inner membrane. In some cases, e.g., maltose, transport components in the outer membrane are also involved. The scope of this review will be limited to a progress report on our understanding of the nature and the role of the periplasmic components that serve as receptors or binding proteins (BPs) * for the various nutrients. Bacterial periplasmic BPs for a large variety of carbohydrates, amino acids, inorganic ions, and enzyme cofactors have been isolated and characterized. More complete reviews on these BPs have appeared recently (Oxender and Quay, 1976; Wilson and Smith, 1978; Furlong and Schellenberg, 1980).
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