ID   APOC1_TUPGL             Reviewed;          88 AA.
AC   Q9XSN5;
DT   07-NOV-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1999, sequence version 1.
DT   25-MAY-2022, entry version 54.
DE   RecName: Full=Apolipoprotein C-I;
DE            Short=Apo-CI;
DE            Short=ApoC-I;
DE   AltName: Full=Apolipoprotein C1;
DE   Contains:
DE     RecName: Full=Truncated apolipoprotein C-I;
DE   Flags: Precursor;
GN   Name=APOC1;
OS   Tupaia glis (Common tree shrew) (Sorex glis).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Eutheria; Euarchontoglires; Scandentia; Tupaiidae; Tupaia.
OX   NCBI_TaxID=9395;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Liver;
RA   Lu X.Y., Chen B.S., Wang K.Q., Zhao Y.L., Zhu D.M., Zen W.W., Xue H.;
RT   "Cloning and sequencing of apolipoprotein CI cDNA of tree shrew.";
RL   Submitted (JAN-1997) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Inhibitor of lipoprotein binding to the low density
CC       lipoprotein (LDL) receptor, LDL receptor-related protein, and very low
CC       density lipoprotein (VLDL) receptor. Associates with high density
CC       lipoproteins (HDL) and the triacylglycerol-rich lipoproteins in the
CC       plasma and makes up about 10% of the protein of the VLDL and 2% of that
CC       of HDL. Appears to interfere directly with fatty acid uptake and is
CC       also the major plasma inhibitor of cholesteryl ester transfer protein
CC       (CETP). Binds free fatty acids and reduces their intracellular
CC       esterification. Modulates the interaction of APOE with beta-migrating
CC       VLDL and inhibits binding of beta-VLDL to the LDL receptor-related
CC       protein. {ECO:0000250|UniProtKB:P02654, ECO:0000250|UniProtKB:P33047}.
CC   -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250|UniProtKB:P02654}.
CC   -!- SIMILARITY: Belongs to the apolipoprotein C1 family. {ECO:0000305}.
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DR   EMBL; U86690; AAD32951.1; -; mRNA.
DR   AlphaFoldDB; Q9XSN5; -.
DR   SMR; Q9XSN5; -.
DR   GO; GO:0034361; C:very-low-density lipoprotein particle; IEA:UniProtKB-KW.
DR   GO; GO:0006869; P:lipid transport; IEA:UniProtKB-KW.
DR   GO; GO:0042157; P:lipoprotein metabolic process; IEA:InterPro.
DR   Gene3D; 4.10.260.30; -; 1.
DR   InterPro; IPR043081; ApoC-1_sf.
DR   InterPro; IPR006781; ApoC-I.
DR   PANTHER; PTHR16565; PTHR16565; 1.
DR   Pfam; PF04691; ApoC-I; 1.
PE   3: Inferred from homology;
KW   Lipid transport; Secreted; Signal; Transport; VLDL.
FT   SIGNAL          1..26
FT                   /evidence="ECO:0000250"
FT   CHAIN           27..88
FT                   /note="Apolipoprotein C-I"
FT                   /id="PRO_0000002019"
FT   CHAIN           29..88
FT                   /note="Truncated apolipoprotein C-I"
FT                   /evidence="ECO:0000250|UniProtKB:P86336"
FT                   /id="PRO_0000391847"
SQ   SEQUENCE   88 AA;  9804 MW;  37A946591EF1A4BF CRC64;
     MRLLLSLPVL LVALSVVLER PAPAQAAPDF SSTLEGLPDK LKEFGNTLED KAKKAIERIK
     QSDLPAKTRN WFTETFGKVR DTFKATFS