SPECIES-SPECIFIC EXPRESSION OF CYTOCHROME-C-OXIDASE ISOZYMES

被引:35
作者
LINDER, D
FREUND, R
KADENBACH, B
机构
[1] UNIV MARBURG, FACHBEREICH CHEM, D-35032 MARBURG, GERMANY
[2] UNIV GIESSEN KLINIKUM, INST BIOCHEM, D-35385 GIESSEN, GERMANY
来源
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY | 1995年 / 112卷 / 03期
关键词
CYTOCHROME C OXIDASE; TISSUE-SPECIFIC EXPRESSION OF ISOZYMES; N-TERMINAL AMINO ACID SEQUENCE; SUBUNIT COMPOSITION; REGULATION OF ACTIVITY;
D O I
10.1016/0305-0491(95)00093-3
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Cytochrome c oxidase was isolated from livers and hearts of sheep, dog and rabbit, and the polypeptide composition was analyzed by two different SDS-PAGE separation systems. The gels were blotted on PVDF-membranes and the N-terminal amino acid sequences of the tissue-specific subunits VIa, VIIa and VIII were determined in a protein sequencer. Except for subunit VIIa from rat, subunits Via and VIIa from all investigated mammals are tissue-specific expressed in liver and heart, In contrast, subunit VIII is clearly different in liver and heart of bovine, dog and rat, but identical in liver and heart of human (liver-type), sheep, rabbit and also in rainbow trout (heart-type). The data suggest a strong species-specific variation of the regulatory properties of cytochrome c oxidase in different tissues.
引用
收藏
页码:461 / 469
页数:9
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