These prolyl 4-hydroxylase, alpha polypeptide I ELISA kits are immunodetection tools for measuring specific protein levels in biological samples. prolyl 4-hydroxylase, alpha polypeptide I is an alias of the human P4HA1 gene, which encodes the protein, prolyl 4-hydroxylase subunit alpha 1. The protein is known to catalyze the post-translational formation of 4-hydroxyproline in -Xaa-Pro-Gly- sequences in collagens and other proteins. The P4HA1 protein is 534 amino acid residues in length and 61 kilodaltons in mass. However, as many as 3 protein isoforms have been identified. It is localized to the ER of the cell. In terms of tissue specificity, it is reported to be expressed in the heart, liver, skeletal muscle, kidney, placenta, lung and pancreas. This protein is known to be glycosylated. Other names for this target antigen include P4HA, C-P4Halpha(I), and collagen prolyl 4-hydroxylase alpha(I). Click on the following ELISA kits for more detailed information, including target reactivity and assay sensitivity.