Protein Domain : AbrB duplication IPR017516

Type	Domain
Description	The entry describes a hydrophobic sequence region that is duplicated to form the AbrB protein of Escherichia coli (not to be confused with a Bacillus subtilis protein with the same gene symbol). In some species, notably the Cyanobacteria and Thermus thermophilus, proteins consist of a single copy rather than two copies. The member from Pseudomonas putida, PP_1415 ( ), was suggested to be an ammonia monooxygenase characteristic of heterotrophic nitrifiers, based on an experimental indication of such activity in the organism and a glimmer of local sequence similarity between parts of the P. putida protein and an instance of the AmoA protein ( ) from Nitrosomonas europaea [ ]; we do not believe the sequence similarity to be meaningful. The member from E. coli (b0715, ybgN) appears to be the largely uncharacterised AbrB (aidB regulator) protein of E. coli [], although we did not manage to trace the origin of association of the article to the sequence.
Short Name	AbrB_dup