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SOAT1_RAT
ID   SOAT1_RAT               Reviewed;         545 AA.
AC   O70536;
DT   18-OCT-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-AUG-1998, sequence version 1.
DT   03-AUG-2022, entry version 128.
DE   RecName: Full=Sterol O-acyltransferase 1 {ECO:0000305};
DE            EC=2.3.1.26 {ECO:0000250|UniProtKB:P35610};
DE   AltName: Full=Acyl-coenzyme A:cholesterol acyltransferase 1;
DE            Short=ACAT-1;
DE   AltName: Full=Cholesterol acyltransferase 1;
GN   Name=Soat1 {ECO:0000312|RGD:621641}; Synonyms=Acact, Acat;
OS   Rattus norvegicus (Rat).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae;
OC   Murinae; Rattus.
OX   NCBI_TaxID=10116;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   STRAIN=Wistar; TISSUE=Adrenal gland;
RX   PubMed=9555010; DOI=10.1016/s0005-2760(98)00007-1;
RA   Matsuda H., Hakamata H., Kawasaki T., Sakashita N., Miyazaki A.,
RA   Takahashi K., Shichiri M., Horiuchi S.;
RT   "Molecular cloning, functional expression and tissue distribution of rat
RT   acyl-coenzyme A:cholesterol acyltransferase.";
RL   Biochim. Biophys. Acta 1391:193-203(1998).
CC   -!- FUNCTION: Catalyzes the formation of fatty acid-cholesterol esters,
CC       which are less soluble in membranes than cholesterol. Plays a role in
CC       lipoprotein assembly and dietary cholesterol absorption. Utilizes
CC       oleoyl-CoA ((9Z)-octadecenoyl-CoA) preferentially as susbstrateb a
CC       higher activity towards an acyl-CoA substrate with a double bond at the
CC       delta-9 position (9Z) than towards saturated acyl-CoA or an unsaturated
CC       acyl-CoA with a double bond at the delta-7 (7Z) or delta-11 (11Z)
CC       positions. {ECO:0000250|UniProtKB:P35610}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a long-chain fatty acyl-CoA + a sterol = a sterol ester + CoA;
CC         Xref=Rhea:RHEA:59816, ChEBI:CHEBI:15889, ChEBI:CHEBI:35915,
CC         ChEBI:CHEBI:57287, ChEBI:CHEBI:83139; EC=2.3.1.26;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:59817;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=an acyl-CoA + cholesterol = a cholesterol ester + CoA;
CC         Xref=Rhea:RHEA:17729, ChEBI:CHEBI:16113, ChEBI:CHEBI:17002,
CC         ChEBI:CHEBI:57287, ChEBI:CHEBI:58342;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:17730;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(9Z)-octadecenoyl-CoA + cholesterol = cholesteryl (9Z-
CC         octadecenoate) + CoA; Xref=Rhea:RHEA:41436, ChEBI:CHEBI:16113,
CC         ChEBI:CHEBI:46898, ChEBI:CHEBI:57287, ChEBI:CHEBI:57387;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:41437;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=cholesterol + hexadecanoyl-CoA = cholesteryl hexadecanoate +
CC         CoA; Xref=Rhea:RHEA:42792, ChEBI:CHEBI:3663, ChEBI:CHEBI:16113,
CC         ChEBI:CHEBI:57287, ChEBI:CHEBI:57379;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:42793;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=cholesterol + octadecanoyl-CoA = cholesteryl octadecanoate +
CC         CoA; Xref=Rhea:RHEA:42812, ChEBI:CHEBI:16113, ChEBI:CHEBI:57287,
CC         ChEBI:CHEBI:57394, ChEBI:CHEBI:82750;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:42813;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(9Z,12Z)-octadecadienoyl-CoA + cholesterol = cholesteryl
CC         (9Z,12Z)-octadecadienoate + CoA; Xref=Rhea:RHEA:42796,
CC         ChEBI:CHEBI:16113, ChEBI:CHEBI:41509, ChEBI:CHEBI:57287,
CC         ChEBI:CHEBI:57383; Evidence={ECO:0000250|UniProtKB:P35610};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:42797;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(5Z,8Z,11Z,14Z)-eicosatetraenoyl-CoA + cholesterol =
CC         cholesteryl (5Z,8Z,11Z,14Z)-eicosatetraenoate + CoA;
CC         Xref=Rhea:RHEA:42816, ChEBI:CHEBI:16113, ChEBI:CHEBI:57287,
CC         ChEBI:CHEBI:57368, ChEBI:CHEBI:82751;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:42817;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(9Z)-hexadecenoyl-CoA + cholesterol = cholesteryl (9Z)-
CC         hexadecenoate + CoA; Xref=Rhea:RHEA:64320, ChEBI:CHEBI:16113,
CC         ChEBI:CHEBI:57287, ChEBI:CHEBI:61540, ChEBI:CHEBI:84323;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:64321;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(11Z)-octadecenoyl-CoA + cholesterol = cholesteryl (11Z)-
CC         octadecenoate + CoA; Xref=Rhea:RHEA:64324, ChEBI:CHEBI:16113,
CC         ChEBI:CHEBI:57287, ChEBI:CHEBI:75121, ChEBI:CHEBI:88768;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:64325;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(7Z)-octadecenoyl-CoA + cholesterol = cholesteryl (7Z)-
CC         octadecenoate + CoA; Xref=Rhea:RHEA:64328, ChEBI:CHEBI:16113,
CC         ChEBI:CHEBI:57287, ChEBI:CHEBI:152049, ChEBI:CHEBI:152050;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:64329;
CC         Evidence={ECO:0000250|UniProtKB:P35610};
CC   -!- SUBUNIT: May form homo- or heterodimers. Interacts with UBIAD1.
CC       {ECO:0000250|UniProtKB:P35610}.
CC   -!- SUBCELLULAR LOCATION: Endoplasmic reticulum membrane
CC       {ECO:0000250|UniProtKB:P35610}; Multi-pass membrane protein
CC       {ECO:0000250|UniProtKB:P35610}.
CC   -!- DOMAIN: Each protomer consists of 9 transmembrane segments, which
CC       enclose a cytosolic tunnel and a transmembrane tunnel that converge at
CC       the predicted catalytic site: acyl-CoA enters the active site through
CC       the cytosolic tunnel, whereas cholesterol enters from the side through
CC       the transmembrane tunnel. {ECO:0000250|UniProtKB:P35610}.
CC   -!- SIMILARITY: Belongs to the membrane-bound acyltransferase family.
CC       Sterol o-acyltransferase subfamily. {ECO:0000305}.
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DR   EMBL; D86373; BAA25372.1; -; mRNA.
DR   RefSeq; NP_112380.1; NM_031118.1.
DR   AlphaFoldDB; O70536; -.
DR   SMR; O70536; -.
DR   STRING; 10116.ENSRNOP00000005677; -.
DR   BindingDB; O70536; -.
DR   ChEMBL; CHEMBL285; -.
DR   jPOST; O70536; -.
DR   PaxDb; O70536; -.
DR   GeneID; 81782; -.
DR   KEGG; rno:81782; -.
DR   UCSC; RGD:621641; rat.
DR   CTD; 6646; -.
DR   RGD; 621641; Soat1.
DR   eggNOG; KOG0380; Eukaryota.
DR   InParanoid; O70536; -.
DR   OrthoDB; 1275897at2759; -.
DR   PhylomeDB; O70536; -.
DR   Reactome; R-RNO-8964038; LDL clearance.
DR   PRO; PR:O70536; -.
DR   Proteomes; UP000002494; Unplaced.
DR   GO; GO:0005789; C:endoplasmic reticulum membrane; ISO:RGD.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0016020; C:membrane; ISO:RGD.
DR   GO; GO:0015485; F:cholesterol binding; ISS:UniProtKB.
DR   GO; GO:0034736; F:cholesterol O-acyltransferase activity; ISS:UniProtKB.
DR   GO; GO:0000062; F:fatty-acyl-CoA binding; ISO:RGD.
DR   GO; GO:0008374; F:O-acyltransferase activity; IBA:GO_Central.
DR   GO; GO:0004772; F:sterol O-acyltransferase activity; IDA:RGD.
DR   GO; GO:0033344; P:cholesterol efflux; ISO:RGD.
DR   GO; GO:0034435; P:cholesterol esterification; ISS:UniProtKB.
DR   GO; GO:0042632; P:cholesterol homeostasis; IEA:InterPro.
DR   GO; GO:0008203; P:cholesterol metabolic process; ISS:UniProtKB.
DR   GO; GO:0010878; P:cholesterol storage; ISO:RGD.
DR   GO; GO:0010742; P:macrophage derived foam cell differentiation; ISO:RGD.
DR   GO; GO:0042986; P:positive regulation of amyloid precursor protein biosynthetic process; ISO:RGD.
DR   GO; GO:0034379; P:very-low-density lipoprotein particle assembly; ISO:RGD.
DR   InterPro; IPR004299; MBOAT_fam.
DR   InterPro; IPR014371; Oat_ACAT_DAG_ARE.
DR   InterPro; IPR030687; Sterol_acyltranf_meta.
DR   PANTHER; PTHR10408; PTHR10408; 1.
DR   Pfam; PF03062; MBOAT; 1.
DR   PIRSF; PIRSF000439; Oat_ACAT_DAG_ARE; 1.
DR   PIRSF; PIRSF500230; Sterol_acyltranf_ACAT; 1.
PE   2: Evidence at transcript level;
KW   Acetylation; Acyltransferase; Cholesterol metabolism; Disulfide bond;
KW   Endoplasmic reticulum; Lipid metabolism; Membrane; Phosphoprotein;
KW   Reference proteome; Steroid metabolism; Sterol metabolism; Transferase;
KW   Transmembrane; Transmembrane helix.
FT   CHAIN           1..545
FT                   /note="Sterol O-acyltransferase 1"
FT                   /id="PRO_0000207643"
FT   TOPO_DOM        1..133
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        134..155
FT                   /note="Helical; Name=1"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   TOPO_DOM        156..175
FT                   /note="Lumenal"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        176..201
FT                   /note="Helical; Name=2"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   TOPO_DOM        202..213
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        214..239
FT                   /note="Helical; Name=3"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   TOPO_DOM        240..247
FT                   /note="Lumenal"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        248..271
FT                   /note="Helical; Name=4"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   TOPO_DOM        272..314
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        315..347
FT                   /note="Helical; Name=5"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   TOPO_DOM        348..364
FT                   /note="Lumenal"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        365..390
FT                   /note="Helical; Name=6"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   TOPO_DOM        391..438
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        439..463
FT                   /note="Helical; Name=7"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   TOPO_DOM        464..469
FT                   /note="Lumenal"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        470..485
FT                   /note="Helical; Name=8"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   TOPO_DOM        486..491
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        492..523
FT                   /note="Helical; Name=9"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   TOPO_DOM        524..545
FT                   /note="Lumenal"
FT                   /evidence="ECO:0000305"
FT   REGION          1..24
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   MOTIF           398..404
FT                   /note="FYXDWWN motif"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   ACT_SITE        455
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   BINDING         132
FT                   /ligand="cholesterol"
FT                   /ligand_id="ChEBI:CHEBI:16113"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   BINDING         410
FT                   /ligand="an acyl-CoA"
FT                   /ligand_id="ChEBI:CHEBI:58342"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   BINDING         413
FT                   /ligand="an acyl-CoA"
FT                   /ligand_id="ChEBI:CHEBI:58342"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   BINDING         416
FT                   /ligand="an acyl-CoA"
FT                   /ligand_id="ChEBI:CHEBI:58342"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   BINDING         420
FT                   /ligand="an acyl-CoA"
FT                   /ligand_id="ChEBI:CHEBI:58342"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   BINDING         428
FT                   /ligand="an acyl-CoA"
FT                   /ligand_id="ChEBI:CHEBI:58342"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   BINDING         451
FT                   /ligand="an acyl-CoA"
FT                   /ligand_id="ChEBI:CHEBI:58342"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   MOD_RES         1
FT                   /note="N-acetylmethionine"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   MOD_RES         7
FT                   /note="Phosphoserine"
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
FT   DISULFID        523..541
FT                   /evidence="ECO:0000250|UniProtKB:P35610"
SQ   SEQUENCE   545 AA;  64146 MW;  40129EF21257BEBF CRC64;
     MVGEETSLRN RLSRSAENPE QDEAQKNLLD THRNGHITMK QLIAKKRQLA AEAEELKPLF
     LKEVGCHFDD FVTNLIDKSA SLDNGGCALT TFSILEEMKN NHRAKDLRAP PEQGKIFISR
     RSLLDELFEV DHIRTIYHMF IALLIIFILS TLVVDYIDEG RLVLEFSLLA YAFGQFPIVI
     WTWWAMFLST LAIPYFLFQR WAHGYSKSSH PLIYSLIHGA FFLVFQLGIL GFIPTYVVLA
     YTLPPASRFI LILEQIRLVM KAHSYVRENV PRVLSAAKEK SSTVPVPTVN QYLYFLFAPT
     LIYRDSYPRT PTVRWGYVAM QFLQVFGCLF YVYYIFERLC APLFRNIKQE PFSARVLVLC
     VFNSILPGVL MLFLSFFAFL HCWLNAFAEM LRFGDRMFYK DWWNSTSYSN YYRTWNVVVH
     DWLYYYVYKD LLWFFSKRFR PAAMLAVFAL SAVVHEYALA VCLSYFYPVL FVLFMFFGMA
     FNFIVNDSRK RPVWNIMVRA SLFLGHGVIL CFYSQEWYAR QRCPLKNPTF LDYVRPRTWT
     CRYVF
 
 
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