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Two conserved regions of SecY proteins from six Gram + bacteria were exploited in a PCR-based strategy for isolating a secY homolog from Streptomyces lividans (Sl). The nucleotide sequence of part of a 3.8-kb fragment showed that the secY homolog is flanked, at the 5 end, by the gene encoding ribosomal protein L15 and, at the 3 end, by an adenylate kinase-encoding gene. The deduced gene...
We cloned a gene encoding a SecA homolog from Streptomyces lividans 1326, a Gram-positive bacterium known to produce large amounts of extracellular proteins. A protein sequence alignment with the other bacterial SecA homologs revealed that S. lividans SecA shares from 39.5 to 44% identity with them, while it shares 34.2 to 37.2% identity with SecA homologs from plastids of algae and plants. We overexpressed...
Nucleotide sequencing revealed the gene (axeA) encoding acetyl xylan esterase (AxeA) downstream from xlnB in theStreptomyces lividans DNA insert of plasmid pIAF42. AxeA consists of a catalytic- and a substrate-binding domain separated by a Gly-rich linker. The N terminus showed no significant homology with published esterases and acetyl xylan esterases, but some homology was found with the xylanases...
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