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鱼腥藻PCC 7119 petH基因产物的N端结构域与CpcD藻胆体连接多肽的同源性。

Homology of the N-terminal domain of the petH gene product from Anabaena sp. PCC 7119 to the CpcD phycobilisome linker polypeptide.

作者信息

Fillat M F, Flores E, Gómez-Moreno C

机构信息

Departamento de Bioquímica y Biología Molecular y Celular, Universidad de Zaragoza, Spain.

出版信息

Plant Mol Biol. 1993 Jul;22(4):725-9. doi: 10.1007/BF00047415.

DOI:10.1007/BF00047415
PMID:8343609
Abstract

The complete nucleotide sequence of the petH gene encoding ferredoxin-NADP+ reductase from the nitrogen-fixing cyanobacterium Anabaena sp. PCC 7119 has been determined. The encoded polypeptide is 136 amino acids longer than the enzyme obtained after purification to homogeneity. The extended N-terminal domain consists of 80 amino acids which shows homology to the CpcD phycobilisome linker polypeptide, through which FNR might be anchored to the thylakoid-bound phycobilisomes. A 56 amino acid interdomain fragment is found which could be a target for proteolysis.

摘要

已确定来自固氮蓝藻鱼腥藻属Anabaena sp. PCC 7119的编码铁氧还蛋白-NADP⁺还原酶的petH基因的完整核苷酸序列。所编码的多肽比纯化至同质后的酶长136个氨基酸。延伸的N端结构域由80个氨基酸组成，与CpcD藻胆体连接多肽具有同源性，通过该多肽FNR可能锚定到类囊体结合的藻胆体上。发现了一个56个氨基酸的结构域间片段，它可能是蛋白水解的靶点。

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