期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1991
卷号：88
期号：22
页码：10059-10063
DOI：10.1073/pnas.88.22.10059
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：A glutaminyl cyclase (QC) that is probably involved in the biosynthesis of pyroglutamyl peptides such as gonadotropin-releasing hormone and thyrotropin-releasing hormone has been purified to homogeneity from bovine anterior pituitary. On the basis of N-terminal sequence analysis, a 2088-base-pair cDNA clone was isolated from a bovine anterior pituitary library. From the nucleotide sequence of this clone, the primary structure of a 330-residue protein and a preceding 31-residue prepropeptide sequence was deduced. By transfection of COS-7 monkey cells with a QC cDNA/pCDM8 vector construct, QC activity was expressed. Hybridization with mRNAs of various bovine tissues revealed expression of QC mainly in brain tissue.
