Identification of the glycosyl transferase required for synthesis of the principal glycolipid characteristic of heterocysts of Anabaena sp. strain PCC 7120 |
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Authors: | Awai Koichiro Wolk C Peter |
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Affiliation: | Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA. |
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Abstract: | Nitrogenase is oxygen-labile. Cyanobacterial heterocysts can fix N(2) in an oxic milieu because their interior is micro-oxic, for which the glycolipid layer of the heterocyst envelope is required. ORF all5341 of the Anabaena sp. genome predicts a glycosyl transferase. An insertional mutant of all5341 synthesized only a nonglycosylated form of heterocyst envelope glycolipid, and lacked a glycolipid layer. All5341 appears to be the transferase required to glycosylate the glycolipid aglycone. |
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Keywords: | heterocyst glycosyl transferase heterocyst envelope glycolipid |
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