Protein: Stearoyl-CoA desaturase (EC 1.14.19.1) (Acyl-CoA desaturase) (Delta(9)-desaturase) (Delta-9 desaturase) (Fatty acid desaturase) (Q9TT94)
Organism: Bos taurus (Bovine)
Function: Stearoyl-CoA desaturase that utilizes O(2) and electrons from reduced cytochrome b5 to introduce the first double bond into saturated fatty acyl-CoA substrates. Catalyzes the insertion of a cis double bond at the delta-9 position into fatty acyl-CoA substrates including palmitoyl-CoA and stearoyl-CoA (By similarity). Gives rise to a mixture of 16:1 and 18:1 unsaturated fatty acids. Plays an important role in lipid biosynthesis. Plays an important role in regulating the expression of genes that are involved in lipogenesis and in regulating mitochondrial fatty acid oxidation (By similarity). Plays an important role in body energy homeostasis (By similarity). Contributes to the biosynthesis of membrane phospholipids, cholesterol esters and triglycerides (By similarity).
Subcellular location: Endoplasmic reticulum membrane {ECO:0000250|UniProtKB:P13516}; Multi-pass membrane protein {ECO:0000305}.
Sequence: MPAHLLQEEISSSYTTTTTITAPPSRVLQNGGGKLEKTPLYLEEDIRPEMRDDIYDPTYQDKEGPKPKLEYVWRNIILMSLLHLGALYGITLIPTCKIYTYIWVLFYYLMGALGITAGAHRLWSHRTYKARLPLRVFLIIGNTMAFQNDVFEWSRDHRAHHKFSETDADPHNSRRGFFFSHVGWLLVRKHPAVKEKGSTLNLSDLRAEKLVMFQRRYYKPGVLLLCFILPTLVPWYLWDETFQNSLFFATLFRYALGLNVTWLVNSAAHMYGYRPYDKTINPRENILVSLGAAGEGFHNYHHTFPYDYSASEYRWHINFTTFFIDCMAAIGLAYDRKKVSKAAILARIKRTGEESYKSG
InterPro domains: - IPR015876: Acyl-CoA desaturase (family) [55-354]
- IPR001522: Fatty acid desaturase type 1, conserved site (conserved_site) [294-308]
Interaction partners: - Elongation of very long chain fatty acids protein 6
- Fatty acid synthase S-acetyltransferase; [Acyl-carrier-protein] S-malonyltransferase; 3-oxoacyl-[acyl-carrier-protein] synthase; 3-oxoacyl-[acyl-carrier-protein] reductase; 3-hydroxyacyl-[acyl-carrier-protein] dehydratase; Enoyl-[acyl-carrier-protein] reductase; Acyl-[acyl-carrier-protein] hydrolase]
- Very-long-chain 3-oxoacyl-CoA reductase
- Acetyl-CoA carboxylase 1
- Very-long-chain
- Very-long-chain enoyl-CoA reductase
- 17beta-estradiol 17-dehydrogenase
- Very-long-chain
- Stearoyl-CoA desaturase 5
- Very-long-chain
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0003824 (catalytic activity), GO:0016491 (oxidoreductase activity), GO:0016705 (oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen), GO:0016717 (oxidoreductase activity, acting on paired donors, with oxidation of a pair of donors resulting in the reduction of molecular oxygen to two molecules of water), GO:0016215 (acyl-CoA desaturase activity), GO:0004768 (stearoyl-CoA 9-desaturase activity)
Biological Process (BP): GO:0008150 (biological process), GO:0050896 (response to stimulus), GO:0042221 (response to chemical), GO:0010033 (response to organic substance), GO:1901700 (response to oxygen-containing compound), GO:0070542 (response to fatty acid), GO:0033993 (response to lipid)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0016020 (membrane), GO:0005737 (cytoplasm), GO:0012505 (endomembrane system), GO:0031984 (organelle subcompartment), GO:0042175 (nuclear outer membrane-endoplasmic reticulum membrane network), GO:0031090 (organelle membrane), GO:0005783 (endoplasmic reticulum), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0098827 (endoplasmic reticulum subcompartment), GO:0043231 (intracellular membrane-bounded organelle), GO:0005789 (endoplasmic reticulum membrane)