Reid K B
Biochem J. 1979 May 1;179(2):367-71. doi: 10.1042/bj1790367.
The sequences of amino acid residues 38--51 of the A-chain, and residues 42--90 of the C-chain, of human subcomponent C1q are given. These results, along with previously published sequence data [Reid (1974) Biochem.J. 141, 189--203; Reid (1977) Biochem.J. 161, 247--251; Reid & Thompson (1978) Biochem.J. 173, 863--868] allow the presentation, and comparison with each other, of the complete amino acid sequences of the collagen-like regions found in the A-, B- and C-chains of human subcomponent C1q. Each chain has the continuity of its collagen-like Gly-X-Y repeating triplet amino acid sequence broken. The B- and C-chains have alanine residues at positions B-9 and C-36 where glycine might be expected. The A-chain has a threonine residue at position A-39, which is located between two Gly-X-Y triplets.
给出了人补体C1q A链38 - 51位氨基酸残基以及C链42 - 90位氨基酸残基的序列。这些结果,连同先前发表的序列数据[里德(1974年)《生物化学杂志》141卷,189 - 203页;里德(1977年)《生物化学杂志》161卷,247 - 251页;里德和汤普森(1978年)《生物化学杂志》173卷,863 - 868页],使得能够呈现人补体C1q A、B和C链中发现的胶原样区域的完整氨基酸序列,并相互比较。每条链的胶原样甘氨酸 - X - Y重复三联体氨基酸序列的连续性都被打破。B链和C链在预期为甘氨酸的B - 9位和C - 36位有丙氨酸残基。A链在位于两个甘氨酸 - X - Y三联体之间的A - 39位有一个苏氨酸残基。