|Detection of Human NT‑4 Propeptide by Western Blot. Western blot shows lysates of PC‑3 human prostate cancer cell line, LNCaP human prostate cancer cell line, and DU145 human prostate carcinoma cell line. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human NT‑4 Propeptide Antigen Affinity-purified Polyclonal Antibody (Catalog # AF3450) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). A specific band was detected for NT‑4 Propeptide at approximately 36 kDa (corresponent to proform). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.|
NT-4 Propeptide (neurotrophin-4/5) is a 27 kDa, secreted, glycosylated neuronal polypeptide that belongs to the NGF-beta family of neurotrophic factors. It is synthesized as a proform that contains a 9 kDa, 56 amino acid (aa) proregion (aa 25-80) and a 130 aa mature segment. The mature molecule forms both nondisulfide linked heterodimers (with NGF) and homodimers. It is unclear if 186 aa NT-4 Propeptide dimerizes, but this might be anticipated. Proneurotrophins are believed to activate NGFR and sortilin complexes and neurotrophin proregions regulate neurotrophin maturation. Over aa 25-80, human NT-4 Propeptide is 89% and 91% aa identical to mouse and canine NT-4 Propeptide, respectively.
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