Brown R H, Richardson M, Boulter D, Ramshaw J A, Jefferies R P
Biochem J. 1972 Jul;128(4):971-4. doi: 10.1042/bj1280971.
The amino acid sequence of a snail cytochrome c has been determined. The molecule consists of a single polypeptide chain of 104 residues, and is homologous with other mitochondrial cytochromes c. Unlike the cytochromes c from vertebrates, there is no acetyl blocking group at the N-terminus. A change in an otherwise invariant position has been observed in position 87. Comparison with amino acid sequences of cytochromes c from other sources indicates that the point of divergence of the molluscs and the vertebrates in evolutionary time was 720 million years ago. Experimental details are given in a supplementary paper that has been deposited as Supplementary Publication SUP 50009 at the National Lending Library for Science and Technology, Boston Spa, Yorks. LS23 7BQ, U.K., from whom copies can be obtained on the terms indicated in Biochem. J. (1972), 126, 5.
一种蜗牛细胞色素c的氨基酸序列已被确定。该分子由一条含104个残基的单多肽链组成，并且与其他线粒体细胞色素c具有同源性。与脊椎动物的细胞色素c不同，其N端没有乙酰阻断基团。在第87位观察到一个在其他位置不变的位点发生了变化。与其他来源的细胞色素c氨基酸序列的比较表明，软体动物和脊椎动物在进化时间上的分歧点是7亿2千万年前。实验细节在一篇补充论文中给出，该论文已作为补充出版物SUP 50009存放在英国约克郡波士顿温泉市国家科技出借图书馆，邮编LS23 7BQ，可按《生物化学杂志》（1972年）第126卷第5期所示条件从该处获取复印件。
