Mastropaolo D, Camerman A, Camerman N
Biochem Biophys Res Commun. 1986 Jan 29;134(2):698-703. doi: 10.1016/s0006-291x(86)80476-4.
The crystal structure of methionine-enkephalin has been determined by X-ray crystallography. There are two independent pentapeptides in the asymmetric unit and both display extended backbone conformations with their side chains arranged alternately below and above the backbone plane. The two molecules form a hydrogen-bonded head-to-tail dimer similar in conformation to one dimeric pair of leucine-enkephalin molecules in a previously reported crystal structure.
甲硫氨酸脑啡肽的晶体结构已通过X射线晶体学确定。不对称单元中有两个独立的五肽，两者均呈现出伸展的主链构象，其侧链在主链平面的下方和上方交替排列。这两个分子形成了一个氢键连接的头对头二聚体，其构象与先前报道的晶体结构中亮氨酸脑啡肽分子的一个二聚体对相似。
