STEAP Family Member 4 (STEAP4) Antibody – Rabbit Polyclonal

The protein encoded by this gene belongs to the STEAP (six transmembrane epithelial antigen of prostate) family, and resides in the golgi apparatus. It functions as a metalloreductase that has the ability to reduce both Fe(3+) to Fe(2+) and Cu(2+) to Cu(1+), using NAD(+) as acceptor. Studies in mice and human suggest that this gene maybe involved in adipocyte development and metabolism, and may contribute to the normal biology of the prostate cell, as well as prostate cancer progression. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2011]

STEAP4: Metalloreductase that has the ability to reduce both Fe(3+) to Fe(2+) and Cu(2+) to Cu(1+). Uses NAD(+) as acceptor. Plays a role in systemic metabolic homeostasis, integrating inflammatory and metabolic responses. Associated with obesity and insulin-resistance. Involved in inflammatory arthritis, through the regulation of inflammatory cytokines. Inhibits anchorage-independent cell proliferation. Belongs to the STEAP family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Membrane protein, integral; EC 1.16.1.-; Oxidoreductase; Membrane protein, multi-pass

Chromosomal Location of Human Ortholog: 7q21.12

Cellular Component: Golgi membrane; integral to membrane; plasma membrane; endosome

Molecular Function: metal ion binding; cupric reductase activity

Biological Process: fat cell differentiation; iron ion homeostasis; copper ion import