NP_000932.3
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NCBI GenBank Nucleotide #
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UniProt Primary Accession #
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UniProt Secondary Accession #
UniProt Related Accession #
Molecular Weight
102.9 kDa
NCBI Official Full Name
NADPH--cytochrome P450 reductase
NCBI Official Synonym Full Names
P450 (cytochrome) oxidoreductase
NCBI Protein Information
NADPH--cytochrome P450 reductase; NADPH-dependent cytochrome P450 reductase
UniProt Protein Name
NADPH--cytochrome P450 reductase
UniProt Synonym Gene Names
UniProt Entry Name
NCPR_HUMAN
NCBI Summary for POR
This gene encodes an endoplasmic reticulum membrane oxidoreductase with an FAD-binding domain and a flavodoxin-like domain. The protein binds two cofactors, FAD and FMN, which allow it to donate electrons directly from NADPH to all microsomal P450 enzymes. Mutations in this gene have been associated with various diseases, including apparent combined P450C17 and P450C21 deficiency, amenorrhea and disordered steroidogenesis, congenital adrenal hyperplasia and Antley-Bixler syndrome. [provided by RefSeq, Jul 2008]
UniProt Comments for POR
POR: This enzyme is required for electron transfer from NADP to cytochrome P450 in microsomes. It can also provide electron transfer to heme oxygenase and cytochrome B5. Defects in POR are the cause of Antley-Bixler syndrome with genital anomalies and disordered steroidogenesis (ABS1). A disease characterized by the association of Antley-Bixler syndrome with steroidogenesis defects and abnormal genitalia. Antley-Bixler syndrome is characterized by craniosynostosis, radiohumeral synostosis present from the perinatal period, midface hypoplasia, choanal stenosis or atresia, femoral bowing and multiple joint contractures. Defects in POR are the cause of disordered steroidogenesis due to cytochrome P450 oxidoreductase deficiency (DISPORD). A disorder resulting in a rare variant of congenital adrenal hyperplasia, with apparent combined P450C17 and P450C21 deficiency and accumulation of steroid metabolites. Affected girls are born with ambiguous genitalia, but their circulating androgens are low and virilization does not progress. Conversely, affected boys are sometimes born undermasculinized. Boys and girls can present with bone malformations, in some cases resembling the pattern seen in patients with Antley-Bixler syndrome.
Protein type: Oxidoreductase; EC 1.6.2.4
Chromosomal Location of Human Ortholog: 7q11.2
Cellular Component: endoplasmic reticulum membrane; membrane; mitochondrion; intracellular membrane-bound organelle
Molecular Function: protein binding; enzyme binding; electron carrier activity; FAD binding; hydrolase activity; FMN binding; NADPH-hemoprotein reductase activity; nitric oxide dioxygenase activity; cytochrome-b5 reductase activity; iron ion binding; NADP binding; iron-cytochrome-c reductase activity
Biological Process: response to drug; nitric oxide catabolic process; internal peptidyl-lysine acetylation; positive regulation of monooxygenase activity; positive regulation of cholesterol biosynthetic process; negative regulation of caspase activity; negative regulation of lipase activity; nitrate catabolic process; positive regulation of chondrocyte differentiation; flavonoid metabolic process; positive regulation of smoothened signaling pathway; fatty acid oxidation; carnitine metabolic process; response to nutrient
Disease: Disordered Steroidogenesis Due To Cytochrome P450 Oxidoreductase Deficiency; Antley-bixler Syndrome With Genital Anomalies And Disordered Steroidogenesis; Antley-bixler Syndrome Without Genital Anomalies Or Disordered Steroidogenesis
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Products associated with POR recombinant protein
Pathways associated with POR recombinant protein
Diseases associated with POR recombinant protein
Organs/Tissues associated with POR recombinant protein
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