Protein: Sterol regulatory element-binding protein 2 (SREBP-2) (Sterol regulatory element-binding transcription factor 2) [Cleaved into: Processed sterol regulatory element-binding protein 2 (Transcription factor SREBF2)] (A3KNA7)
Organism: Danio rerio (Zebrafish) (Brachydanio rerio)
Function: Precursor of the transcription factor form (Processed sterol regulatory element-binding protein 2), which is embedded in the endoplasmic reticulum membrane. Low sterol concentrations promote processing of this form, releasing the transcription factor form that translocates into the nucleus and activates transcription of genes involved in cholesterol biosynthesis.
Subcellular location: [Sterol regulatory element-binding protein 2]: Endoplasmic reticulum membrane {ECO:0000250|UniProtKB:Q12772}; Multi-pass membrane protein {ECO:0000255}. Golgi apparatus membrane {ECO:0000250|UniProtKB:Q12772}; Multi-pass membrane protein {ECO:0000255}. Cytoplasmic vesicle, COPII-coated vesicle membrane {ECO:0000250|UniProtKB:Q12772}; Multi-pass membrane protein {ECO:0000255}. Note=At high sterol concentrations, the SCAP-SREBP is retained in the endoplasmic reticulum. Low sterol concentrations promote recruitment into COPII-coated vesicles and transport of the SCAP-SREBP to the Golgi, where it is processed. {ECO:0000250|UniProtKB:Q12772}.; SUBCELLULAR LOCATION: [Processed sterol regulatory element-binding protein 2]: Nucleus {ECO:0000250|UniProtKB:Q12772}.
Sequence: MDASEFMDTMDPSLSELGDEFTLGDIDEMLQFVSNQVDFPDIFEDQMGGGATARTLPQAVPSAILTPPHTPVQTSSQTHTQTLTQAHTQTHTQTHTQTRTPPVLQPRPQPITQVQTQTFPMQTLAVQTQAQPQTVMITPTATPSRFIQNQVICQQNNATSFQVLQPQMQSIMTSPQVQPMTIQHQRVLTPAGQTIQTLSTAPTTVHTMSQQVPVLVHQPQILKTDSLLLTTKPDGTQVLSTVQSPTGITTLTTPIQTTALQMPTLMSSNILTTVPVVMGGGDKLPIKQLSSGPAHNIGGARVGVEQSPVVGPGGVVKEGERRTTHNIIEKRYRSSINDKILELRDLVLGNDAKMHKSGVLRKAIDYIKYLQQVNHKLRQENLTLKMANQKNKSACVSDVDLELKAEVSLISPPPSDSGSSSPAQLSPYCIDSEPGSPLLEHEQLKSEPDSPSCVGVMDRSRLLLCALSFLCLSLNPLPSLLGAEAPAGSPEVAGHGPTRTLFSLPAQTQSFGAWLWCVLPFLLVWVVSGVGVVWGCVRVLYLWEPVTPLHSPTSVRFWRHRKQADLQLYRGDYAGAVLSLQTCLSVLSRVLPVTTLDIMCSLSWNLIRYCLRRPAPLGWLVRLVGGRHEGEESQTSSRDAALVYHKLSQLQLTGQMERRPLWGVCVSLSAVNLCESAEGKLTATQQVQVYVTAAISVRAALGKHLTCLPAYLLSCAEALTCQSDSKPLPDCLRWIFTPLGRQFFLSCDWSVRSESDGQIFTSARDKADPIAQLHRCFCQKLLERATHTLIEPQSREDAGEFTGVLEFLQLLNSCTEDSAPSTAPFPALANQSSTSVRDPVCRWWASVLTAAVHWLQGDDASVRSLLAEAERMPRALHTLDHPLPKAVLALCKAVQMSVCPQKGEGVVSCLSHCQRASAQLHISVCQSHNNTWLHKGVELLVCDLLLTLRTSLWQRGGGSNGEPGPAPGSQLSGFQRDLSSLRRLGQAHRQAQHKLFLHETTVRLMAGASPTRTHQLLRHRTHNYTTTDGECVLGERERAHAILLACRHLPLPLLTPPGHRARLLAEAKRTLERVGDRRSLQDCQHILLRLSGGTTIAAS
InterPro domains: - IPR011598: Myc-type, basic helix-loop-helix (bHLH) domain (domain) [320-376]
- IPR036638: Helix-loop-helix DNA-binding domain superfamily (homologous_superfamily) [317-395]
Interaction partners: - Sterol regulatory element-binding protein cleavage-activating protein
- Membrane-bound transcription factor peptidase, site 2.
- 3-hydroxy-3-methylglutaryl coenzyme A reductase
- Fatty acid synthase
- NPC intracellular cholesterol transporter 1 isoform X1
- Hydroxymethylglutaryl-CoA synthase
- Insulin-induced gene 1 protein
- Importin subunit beta-1
- P-type phospholipid transporter
- ATP-binding cassette, sub-family G
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0003682 (chromatin binding), GO:0097159 (organic cyclic compound binding), GO:1901363 (heterocyclic compound binding), GO:0003676 (nucleic acid binding), GO:0003677 (DNA binding), GO:0043565 (sequence-specific DNA binding)
Biological Process (BP): GO:0008150 (biological process), GO:0032502 (developmental process), GO:0009987 (cellular process), GO:0032501 (multicellular organismal process), GO:0048869 (cellular developmental process), GO:0048856 (anatomical structure development), GO:0007275 (multicellular organism development), GO:0009888 (tissue development), GO:0048468 (cell development), GO:0030154 (cell differentiation), GO:0048731 (system development), GO:0048513 (animal organ development), GO:0031018 (endocrine pancreas development), GO:0031099 (regeneration), GO:0031100 (animal organ regeneration), GO:0035270 (endocrine system development), GO:0003309 (type B pancreatic cell differentiation), GO:0002064 (epithelial cell development), GO:0048732 (gland development), GO:0060429 (epithelium development), GO:0061008 (hepaticobiliary system development), GO:0031016 (pancreas development), GO:0030855 (epithelial cell differentiation), GO:1990798 (pancreas regeneration), GO:0001889 (liver development), GO:0002066 (columnar/cuboidal epithelial cell development), GO:0003323 (type B pancreatic cell development), GO:0002065 (columnar/cuboidal epithelial cell differentiation), GO:0002068 (glandular epithelial cell development), GO:0002067 (glandular epithelial cell differentiation), GO:0035883 (enteroendocrine cell differentiation)
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:0031974 (membrane-enclosed lumen), GO:0005654 (nucleoplasm), GO:0043233 (organelle lumen), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0043231 (intracellular membrane-bounded organelle), GO:0070013 (intracellular organelle lumen), GO:0031981 (nuclear lumen), GO:0005634 (nucleus)