an 18 kDA protein from Pseudomonas aeruginosa; it regulates the alginate biosynthetic gene, algD encoding GDP-mannose dehydrogenase; it also regulate the levels of a tricarboxylic acid (TCA) cycle enzyme, (succinyl coenzyme A synthetase, and nucleoside diphosphate kinase (Ndk)); amino acid sequence has been determined; GenBank AE004938 and M32077