A recombinant partial protein sequence (within amino acids 1-95) from the human protein was used as the immunogen for the CGRP antibody.
The family of EF-hand type Ca2+-binding proteins includes Calbindin (previously designated vitamin D-dependent Ca2+-binding protein), S-100 Alpha and beta, Calgranulins A (also designated MRP8), B (also designated MRP14) and C (S100A12, CGRP) and the parvalbumin family members, including parvalbumin Alpha and parvalbumin beta (also designated oncomodulin). Calbindin, S-100 proteins and parvalbumin proteins are each expressed in neural tissues. In addition, S-100 Alpha and beta are present in a variety of other tissues, and Calbindin is present in intestine and kidney. Parvalbumin Alpha is also found in fast-contracting/relaxing skeletal muscle fibers and parvalbumin beta is found in many tumor tissues as well as in the organ of Corti. Calbindin, S-100 proteins and parvalbulmins have all been detected in leydig cells and the testis. These proteins are thought to play a role in hormone production and spermatogenesis. Calgranulin is expressed in macrophages and epithelial cells.