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Origin and diversity of alginate lyases of families PL-5 and -7 in Sphingomonas sp. strain A1.

ABSTRACT: Sphingomonas sp. strain A1 has three endotype alginate lyases (A1-I, A1-II [family PL-7], and A1-III [family PL-5]), each of which is encoded by a single gene. In addition to those of these lyases, a gene (the A1-II' gene) showing significant identity with the A1-II gene was present in the bacterial genome and coded for an alginate lyase with broad substrate specificity. Since no expression of A1-II' was observed even in bacterial cells grown on alginate, the A1-II' gene was thought to be a silent gene derived from the A1-II gene, presumably through duplication, modification, and translocation.

SUBMITTER: Miyake O 

PROVIDER: S-EPMC387801 | biostudies-literature | 2004 May

REPOSITORIES: biostudies-literature

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Origin and diversity of alginate lyases of families PL-5 and -7 in Sphingomonas sp. strain A1.

Miyake Osamu O   Ochiai Akihito A   Hashimoto Wataru W   Murata Kousaku K  

Journal of bacteriology 20040501 9

Sphingomonas sp. strain A1 has three endotype alginate lyases (A1-I, A1-II [family PL-7], and A1-III [family PL-5]), each of which is encoded by a single gene. In addition to those of these lyases, a gene (the A1-II' gene) showing significant identity with the A1-II gene was present in the bacterial genome and coded for an alginate lyase with broad substrate specificity. Since no expression of A1-II' was observed even in bacterial cells grown on alginate, the A1-II' gene was thought to be a sile  ...[more]

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