PRIMARY STRUCTURE OF THE 2 VARIANTS OF XENOPUS-LAEVIS MTSSB, A MITOCHONDRIAL-DNA BINDING-PROTEIN

被引:29
作者
GHRIR, R
LECAER, JP
DUFRESNE, C
GUERIDE, M
机构
[1] UNIV PARIS 11,INST GENET & MICROBIOL,BIOL GEN LAB,BATIMENT 400,F-91405 ORSAY,FRANCE
[2] CNRS,PHYSIOL NERVEUSE LAB,SERV COMMUN MICROSEQUENCAGE,F-91198 GIF SUR YVETTE,FRANCE
关键词
D O I
10.1016/0003-9861(91)90152-9
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
The primary structure of the single-stranded DNA binding protein from Xenopus laevis oocyte mitochondria (mtSSB) has been determined by Edman degradation of the intact molecule and peptides derived from partial α-chymotrypsin proteolysis and enzymatic cleavage with trypsin and endoproteinase Glu-C. The native mtSSB is composed of two related polypeptide chains, mtSSBs and mtSSBr. The sequence of mtSSBs consists of 129 amino acids with a calculated molecular mass of 14,627 Da. Comparison of the first 80 residues of the two chains reveals 91% identity. A high degree of similarity is found between mtSSB and Escherichia coli SSB or F sex factor SSB. © 1991.
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页码:395 / 400
页数:6
相关论文
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