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Báo cáo Y học: A b-lysine adenylating enzyme and a b-lysine binding protein involved in poly b-lysine chain assembly in nourseothricin synthesis in Streptomyces noursei

Chia sẻ: Nguyen Thang | Ngày: | Loại File: PDF | Số trang:11

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Nourseothricins (syn. Streptothricins), agroupof nucleoside peptides produced by several streptomycete strains, contain a polyb-lysine chain of variable length attached in amide linkage to the amino sugar moiety gulosamine of the nucleoside portion. We show that the nourseothricin-pro-ducingStreptomyces nourseicontains an enzyme (NpsA) of an apparentMr56 000 that speci®cally activatesb-lysine by adenylation but does not bind to it as a thioester.

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Nội dung Text: Báo cáo Y học: A b-lysine adenylating enzyme and a b-lysine binding protein involved in poly b-lysine chain assembly in nourseothricin synthesis in Streptomyces noursei

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