Identification and organization of the novel ethanolamine utilization gene cluster in representative Streptomyces sp. genomes (S. coelicolor, S. venezuelae, S. scabies, S. albus, and S. pristinaespiralis). The proposed gene product functions are as follows: orf1, membrane protein; orf2, short-chain dehydrogenase; orf3, aldehyde dehydrogenase; glnA4, gamma-glutamylethanolamide synthetase; etuRI, ethanolamine utilization pathway regulator; orf4, putative ethanolamine transporter; orf5, glutamine amidotransferase.