Identification
HMDB Protein ID CDBP03788
Secondary Accession Numbers Not Available
Name Sterol regulatory element-binding protein cleavage-activating protein
Description Not Available
Synonyms
  1. SCAP
  2. SREBP cleavage-activating protein
Gene Name SCAP
Protein Type Enzyme
Biological Properties
General Function Involved in unfolded protein binding
Specific Function Escort protein required for cholesterol as well as lipid homeostasis. Regulates export of the SCAP/SREBF complex from the ER upon low cholesterol. Formation of a ternary complex with INSIG at high sterol concentrations leads to masking of an ER-export signal in SCAP and retention of the complex in the ER. Low sterol concentrations trigger release of INSIG, a conformational change in the SSC domain of SCAP, unmasking of the ER export signal, recruitment into COPII-coated vesicles, transport to the Golgi complex, proteolytic cleavage of SREBF in the Golgi, release of the transcription factor fragment of SREBF from the membrane, its import into the nucleus and up-regulation of LDLR, INSIG1 and the mevalonate pathway
GO Classification
Component
cell part
membrane part
intrinsic to membrane
integral to membrane
Cellular Location
  1. Golgi apparatus membrane
  2. Cytoplasmic vesicle
  3. Endoplasmic reticulum membrane
  4. Multi-pass membrane protein
  5. Multi-pass membrane protein
  6. Multi- pass membrane protein
  7. COPII- coated vesicle membrane
Pathways
Gene Properties
Chromosome Location Chromosome:3
Locus 3p21.31
SNPs SCAP
Gene Sequence
>3840 bp
ATGACCCTGACTGAAAGGCTGCGTGAGAAGATATCTCGGGCCTTCTACAACCATGGGCTC
CTCTGTGCATCCTATCCCATCCCCATCATCCTCTTCACAGGGTTCTGCATCTTAGCCTGC
TGCTACCCACTGCTGAAACTCCCCTTGCCAGGAACAGGACCTGTGGAATTCACCACCCCT
GTGAAGGATTACTCGCCCCCACCTGTGGACTCTGACCGCAAACAAGGAGAGCCTACTGAG
CAGCCTGAGTGGTATGTGGGTGCCCCGGTGGCTTATGTCCAGCAGATATTTGTGAAGTCC
TCAGTGTTTCCCTGGCACAAGAACCTCCTGGCAGTAGATGTATTTCGTTCACCTTTGTCC
CGGGCATTCCAACTGGTGGAGGAGATCCGGAACCACGTGCTGAGAGACAGCTCTGGGATC
AGGAGCTTGGAGGAGTTGTGTCTGCAAGTGACCGACCTGCTGCCAGGCCTTAGGAAGCTC
AGGAACCTACTCCCTGAGCATGGATGCCTGCTGCTGTCCCCTGGGAACTTCTGGCAGAAT
GACTGGGAACGCTTCCATGCTGATCCTGACATCATTGGGACCATCCACCAGCACGAGCCT
AAAACCCTGCAGACTTCAGCCACACTCAAAGACTTGTTATTTGGTGTTCCTGGGAAGTAC
AGCGGGGTGAGCCTCTACACCAGGAAGAGGATGGTCTCCTACACCATCACCCTGGTCTTC
CAGCACTACCATGCCAAGTTCCTGGGCAGCCTGCGTGCCCGCCTGATGCTTCTGCACCCC
AGCCCCAACTGCAGCCTTCGGGCGGAGAGCCTGGTCCACGTGCACTTCAAGGAGGAGATT
GGTGTCGCTGAGCTCATCCCCCTTGTGACCACCTACATCATCTTGTTTGCCTACATCTAC
TTCTCCACGCGGAAGATCGACATGGTCAAGTCCAAGTGGGGGCTGGCCCTGGCTGCCGTG
GTCACAGTGCTCAGCTCGCTGCTCATGTCTGTGGGACTCTGCACACTCTTCGGCCTGACG
CCCACCCTCAATGGCGGCGAGATTTTCCCCTACCTTGTGGTGGTTATTGGGTTAGAGAAT
GTGTTGGTGCTCACCAAGTCTGTGGTCTCAACCCCGGTAGACCTGGAGGTGAAGCTGCGG
ATCGCCCAAGGCCTAAGCAGCGAGAGCTGGTCCATCATGAAGAACATGGCCACGGAGCTG
GGCATCATCCTCATCGGCTACTTCACCCTAGTGCCCGCCATCCAGGAGTTCTGTCTCTTT
GCTGTCGTGGGGCTGGTGTCTGACTTCTTCCTTCAGATGCTGTTTTTCACCACTGTCCTG
TCCATTGACATTCGCCGGATGGAGCTAGCAGACCTGAACAAGCGACTGCCCCCTGAGGCC
TGCCTGCCCTCAGCCAAGCCAGTGGGACAGCCAACGCGCTACGAGCGGCAGCTGGCTGTG
AGGCCGTCCACACCCCACACCATCACGTTGCAGCCGTCTTCCTTCCGAAACCTGCGGCTC
CCCAAGAGGCTGCGTGTTGTCTACTTCCTGGCCCGCACCCGCCTGGCACAGCGCCTCATC
ATGGCTGGCACCGTTGTCTGGATTGGCATCCTGGTATACACAGACCCAGCAGGGCTGCGC
AACTACCTCGCTGCCCAGGTGACGGAACAGAGCCCATTGGGTGAGGGAGCCCTGGCTCCC
ATGCCCGTGCCTAGTGGCATGCTGCCCCCCAGCCACCCGGACCCTGCCTTCTCCATCTTC
CCACCTGATGCCCCTAAGCTACCTGAGAACCAGACGTCGCCAGGCGAGTCACCTGAGCGT
GGAGGTCCAGCAGAGGTTGTCCATGACAGCCCAGTCCCAGAGGTAACCTGGGGGCCTGAG
GATGAGGAACTTTGGAGGAAATTGTCCTTCCGCCACTGGCCGACGCTCTTCAGCTATTAC
AACATCACACTGGCCAAGAGGTACATCAGCCTGCTGCCCGTCATCCCAGTCACGCTCCGC
CTGAACCCGAGGGAGGCTCTGGAGGGCCGGCACCCTCAGGACGGCCGCAGTGCCTGGCCC
CCACCGGGGCCCATACCTGCTGGGCACTGGGAAGCAGGACCCAAGGGCCCAGGTGGGGTG
CAGGCCCATGGAGACGTCACGCTGTACAAGGTGGCGGCGCTGGGCCTGGCCACCGGCATC
GTCTTGGTGCTGCTGCTGCTCTGCCTCTACCGCGTGCTATGCCCGCGCAACTACGGGCAG
CTGGGTGGTGGGCCCGGGCGGCGGAGGCGCGGGGAGCTGCCCTGCGACGACTACGGCTAT
GCGCCACCCGAGACGGAGATCGTGCCGCTTGTGCTGCGCGGCCACCTCATGGACATCGAG
TGCCTGGCCAGCGACGGCATGCTGCTGGTGAGCTGCTGCCTGGCAGGCCACGTCTGCGTG
TGGGACGCGCAGACCGGGGATTGCCTAACGCGCATTCCGCGCCCAGGCAGGCAGCGCCGG
GACAGTGGCGTGGGCAGCGGGCTTGAGGCTCAGGAGAGCTGGGAACGACTTTCAGATGGT
GGGAAGGCTGGTCCAGAGGAGCCTGGGGACAGCCCTCCCCTGAGACACCGCCCCCGGGGC
CCTCCGCCGCCTTCCCTCTTCGGGGACCAGCCTGACCTCACCTGCTTAATTGACACCAAC
TTTTCAGCGCAGCCTCGGTCCTCACAGCCCACTCAGCCCGAGCCCCGGCACCGGGCGGTC
TGTGGCCGCTCTCGGGACTCCCCAGGCTATGACTTCAGCTGCCTGGTGCAGCGGGTGTAC
CAGGAGGAGGGGCTGGCGGCCGTCTGCACACCAGCCCTGCGCCCACCCTCGCCTGGGCCG
GTGCTGTCCCAGGCCCCTGAGGACGAGGGTGGCTCCCCCGAGAAAGGCTCCCCTTCCCTC
GCCTGGGCCCCCAGTGCCGAGGGTTCCATCTGGAGCTTGGAGCTGCAGGGCAACCTCATC
GTGGTGGGGCGGAGCAGCGGCCGGCTGGAGGTGTGGGACGCCATTGAAGGGGTGCTGTGC
TGCAGCAGCGAGGAGGTCTCCTCAGGCATTACCGCTCTGGTGTTCTTGGACAAAAGGATT
GTGGCTGCACGGCTCAACGGTTCCCTTGATTTCTTCTCCTTGGAGACCCACACTGCCCTC
AGCCCCCTGCAGTTTAGAGGGACCCCAGGGCGGGGCAGTTCCCCTGCCTCTCCAGTGTAC
AGCAGCAGCGACACAGTGGCCTGTCACCTGACCCACACAGTGCCCTGTGCACACCAAAAA
CCCATCACAGCCCTGAAAGCCGCTGCTGGGCGCTTGGTGACTGGGAGCCAAGACCACACA
CTGAGAGTGTTCCGTCTGGAGGACTCGTGCTGCCTCTTCACCCTTCAGGGCCACTCAGGG
GCCATCACGACCGTGTACATTGACCAGACCATGGTGCTGGCCAGTGGAGGACAAGATGGG
GCCATCTGCCTGTGGGATGTACTGACTGGCAGCCGGGTCAGCCATGTGTTTGCTCACCGT
GGGGATGTCACCTCCCTTACCTGTACCACCTCCTGTGTCATCAGCAGTGGCCTGGATGAC
CTCATCAGCATCTGGGACCGCAGCACAGGCATCAAGTTCTACTCCATTCAGCAGGACCTG
GGCTGTGGTGCAAGCTTGGGTGTCATCTCAGACAACCTGCTGGTGACTGGCGGCCAGGGC
TGTGTCTCCTTTTGGGACCTAAACTACGGGGACCTGTTACAGACAGTCTACCTGGGGAAG
AACAGTGAGGCCCAGCCTGCCCGCCAGATCCTGGTGCTGGACAACGCTGCCATTGTCTGC
AACTTTGGCAGTGAGCTCAGCCTGGTGTATGTGCCCTCTGTGCTGGAGAAGCTGGACTGA
Protein Properties
Number of Residues 1279
Molecular Weight 139727.6
Theoretical pI 6.85
Pfam Domain Function
Signals
  • ["None"]
Transmembrane Regions
  • ["19-39", "280-300", "313-333", "345-365", "402-422", "424-444", "519-539", "710-730"]
Protein Sequence
>Sterol regulatory element-binding protein cleavage-activating protein
MTLTERLREKISRAFYNHGLLCASYPIPIILFTGFCILACCYPLLKLPLPGTGPVEFTTP
VKDYSPPPVDSDRKQGEPTEQPEWYVGAPVAYVQQIFVKSSVFPWHKNLLAVDVFRSPLS
RAFQLVEEIRNHVLRDSSGIRSLEELCLQVTDLLPGLRKLRNLLPEHGCLLLSPGNFWQN
DWERFHADPDIIGTIHQHEPKTLQTSATLKDLLFGVPGKYSGVSLYTRKRMVSYTITLVF
QHYHAKFLGSLRARLMLLHPSPNCSLRAESLVHVHFKEEIGVAELIPLVTTYIILFAYIY
FSTRKIDMVKSKWGLALAAVVTVLSSLLMSVGLCTLFGLTPTLNGGEIFPYLVVVIGLEN
VLVLTKSVVSTPVDLEVKLRIAQGLSSESWSIMKNMATELGIILIGYFTLVPAIQEFCLF
AVVGLVSDFFLQMLFFTTVLSIDIRRMELADLNKRLPPEACLPSAKPVGQPTRYERQLAV
RPSTPHTITLQPSSFRNLRLPKRLRVVYFLARTRLAQRLIMAGTVVWIGILVYTDPAGLR
NYLAAQVTEQSPLGEGALAPMPVPSGMLPPSHPDPAFSIFPPDAPKLPENQTSPGESPER
GGPAEVVHDSPVPEVTWGPEDEELWRKLSFRHWPTLFSYYNITLAKRYISLLPVIPVTLR
LNPREALEGRHPQDGRSAWPPPGPIPAGHWEAGPKGPGGVQAHGDVTLYKVAALGLATGI
VLVLLLLCLYRVLCPRNYGQLGGGPGRRRRGELPCDDYGYAPPETEIVPLVLRGHLMDIE
CLASDGMLLVSCCLAGHVCVWDAQTGDCLTRIPRPGRQRRDSGVGSGLEAQESWERLSDG
GKAGPEEPGDSPPLRHRPRGPPPPSLFGDQPDLTCLIDTNFSAQPRSSQPTQPEPRHRAV
CGRSRDSPGYDFSCLVQRVYQEEGLAAVCTPALRPPSPGPVLSQAPEDEGGSPEKGSPSL
AWAPSAEGSIWSLELQGNLIVVGRSSGRLEVWDAIEGVLCCSSEEVSSGITALVFLDKRI
VAARLNGSLDFFSLETHTALSPLQFRGTPGRGSSPASPVYSSSDTVACHLTHTVPCAHQK
PITALKAAAGRLVTGSQDHTLRVFRLEDSCCLFTLQGHSGAITTVYIDQTMVLASGGQDG
AICLWDVLTGSRVSHVFAHRGDVTSLTCTTSCVISSGLDDLISIWDRSTGIKFYSIQQDL
GCGASLGVISDNLLVTGGQGCVSFWDLNYGDLLQTVYLGKNSEAQPARQILVLDNAAIVC
NFGSELSLVYVPSVLEKLD
GenBank ID Protein 66932902
UniProtKB/Swiss-Prot ID Q12770
UniProtKB/Swiss-Prot Entry Name SCAP_HUMAN
PDB IDs Not Available
GenBank Gene ID NM_012235.2
GeneCard ID SCAP
GenAtlas ID SCAP
HGNC ID HGNC:30634
References
General References Not Available