|Detection of Human Lactase-like Protein/LCTL by Western Blot. Western blot shows lysates of A549 human lung carcinoma cell line and A431 human epithelial carcinoma cell line. PVDF Membrane was probed with 1 µg/mL of Goat Anti-Human Lactase-like Protein/LCTL Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5984) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). A specific band was detected for Lactase-like Protein/LCTL at approximately 62 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.|
LCTL (also Lactase-like Protein and Klotho/lactase-phlorizin hydrolase-related protein/KLPH) is a 62 kDa (predicted) member of the glycosyl hydrolase 1 family of proteins. It is expressed in skin and kidney, and may participate in endocrine FGF19 subfamily signaling pathways. Mature human LCTL is a 546 amino acid (aa) type I transmembrane protein that appears to be present in the ER. It contains an apparently nonfunctional glycosidase domain (aa 33‑503), plus a very short five aa cytoplasmic segment that may function as an ER-retention signal. There is one potential alternative start site at Met174. Over aa 23‑541, human LCTL shares 86% aa identity with mouse LCTL.
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