Purity: > 85% by SDS - PAGE Format: Liquid. In 20mM Tris-HCl buffer (pH 8.0) containing 0.15M NaCl, 10% glycerol, 1mM DTT . DH dehydrogenase [ubiquinone] 1 alpha subcomplex assembly factor 4, also known as NDuFAF4, is involved in the assembly of mitochondrial NADH: ubiquinone oxidoreductase complex (complex I). This protein may be involved in cell proliferation and survival of hormone-dependent tumor cells. This protein may be a regulator of breast tumor cell invasion. Recombinant human NDuFAF4 protein, fused to His-tag at N-terminus, was expressed in E.coli and purified by using conventional chromatography techniques.