Khan M Y
Biochem J. 1986 May 15;236(1):307-10. doi: 10.1042/bj2360307.
The domain III of bovine serum albumin containing residues 377-582 of the protein sequence was isolated and its behaviour in acid solution was studied. The fragment was found to undergo structural transformations over the pH range 3.5-4.5 known to cause N-F transition in serum albumin. On the other hand, an albumin fragment that was devoid of domain III was unable to exhibit such a transition. These results were consistent with a mechanism where N-F transition involves the separation of domain III from the rest of the albumin starts at about pH 4.3 and is completed at pH 3.5.
分离出了牛血清白蛋白包含蛋白质序列中377 - 582位残基的结构域III,并研究了其在酸性溶液中的行为。发现该片段在pH值3.5 - 4.5范围内会发生结构转变,已知此pH范围会导致血清白蛋白发生N - F转变。另一方面,一个不含结构域III的白蛋白片段无法表现出这种转变。这些结果与一种机制相符,即N - F转变涉及结构域III与白蛋白其余部分的分离,该分离在约pH 4.3时开始,在pH 3.5时完成。