title: Synthesis of a gamma-carboxyglutamic acid containing heptapeptide corresponding to bovine prothrombin residues 17-23.
abstract: The vitamin K-dependent proteins involved in blood coagulation processes each contain a small cystine loop with the sequence -Gla-Cys-X-Gla-Gla-X-Cys-. A method for the synthesis of the heptapeptide derivative representing the 17-23 sequence of bovine prothrombin, Z-Gla-Cys-Leu-Gla-Gla-Pro-Cys-OBzl, has been developed. The 25Mg2+ n.m.r. spectrum of the heptapeptide derivative has been obtained and is compared to the n.m.r. spectra obtained from the interaction of 25Mg2+ with Z-Gla-OMe and Z-Gla-Gla-OMe.
mesh_terms: D015055:1-Carboxyglutamic Acid / Q000378:metabolism; D000595:Amino Acid Sequence; D000818:Animals; D002417:Cattle; D008274:Magnesium / Q000378:metabolism; D009682:Magnetic Resonance Spectroscopy; D009842:Oligopeptides / Q000138:chemical synthesis* / Q000378:metabolism; D011485:Protein Binding; D011516:Prothrombin / Q000378:metabolism
chemical_list: D009842:Oligopeptides; D015055:1-Carboxyglutamic Acid; D011516:Prothrombin; D008274:Magnesium