ID   APOC2_LEPWE             Reviewed;         101 AA.
AC   A0A2U3Y4D7;
DT   13-NOV-2019, integrated into UniProtKB/Swiss-Prot.
DT   18-JUL-2018, sequence version 1.
DT   25-MAY-2022, entry version 10.
DE   RecName: Full=Apolipoprotein C-II;
DE            Short=Apo-CII;
DE            Short=ApoC-II;
DE   AltName: Full=Apolipoprotein C2;
DE   Contains:
DE     RecName: Full=Proapolipoprotein C-II;
DE              Short=ProapoC-II;
DE   Flags: Precursor;
GN   Name=APOC2;
OS   Leptonychotes weddellii (Weddell seal) (Otaria weddellii).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Eutheria; Laurasiatheria; Carnivora; Caniformia; Phocidae; Leptonychotes.
OX   NCBI_TaxID=9713;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   TISSUE=Liver;
RA   Di Palma F., Alfoldi J., Johnson J., Berlin A., Gnerre S., Jaffe D.,
RA   MacCallum I., Young S., Walker B.J., Lindblad-Toh K.;
RL   Submitted (APR-2013) to the EMBL/GenBank/DDBJ databases.
RN   [2]
RP   IDENTIFICATION.
RA   Puppione D.L.;
RL   Unpublished observations (SEP-2019).
CC   -!- FUNCTION: Component of chylomicrons, very low-density lipoproteins
CC       (VLDL), low-density lipoproteins (LDL), and high-density lipoproteins
CC       (HDL) in plasma. Plays an important role in lipoprotein metabolism as
CC       an activator of lipoprotein lipase. Both proapolipoprotein C-II and
CC       apolipoprotein C-II can activate lipoprotein lipase.
CC       {ECO:0000250|UniProtKB:P02655}.
CC   -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250|UniProtKB:P02655}.
CC   -!- PTM: Proapolipoprotein C-II is synthesized as a sialic acid containing
CC       glycoprotein which is subsequently desialylated prior to its
CC       proteolytic processing. {ECO:0000250|UniProtKB:P02655}.
CC   -!- PTM: Proapolipoprotein C-II, the major form found in plasma undergoes
CC       proteolytic cleavage of its N-terminal hexapeptide to generate
CC       apolipoprotein C-II, which occurs as the minor form in plasma.
CC       {ECO:0000250|UniProtKB:P02655}.
CC   -!- SIMILARITY: Belongs to the apolipoprotein C2 family. {ECO:0000305}.
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DR   EMBL; APMU01085777; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   RefSeq; XP_006738588.1; XM_006738525.1.
DR   RefSeq; XP_006738589.1; XM_006738526.1.
DR   AlphaFoldDB; A0A2U3Y4D7; -.
DR   SMR; A0A2U3Y4D7; -.
DR   STRING; 9713.XP_006738588.1; -.
DR   GeneID; 102732291; -.
DR   CTD; 344; -.
DR   Proteomes; UP000245341; Unplaced.
DR   GO; GO:0042627; C:chylomicron; IEA:UniProtKB-KW.
DR   GO; GO:0034364; C:high-density lipoprotein particle; IEA:UniProtKB-KW.
DR   GO; GO:0034362; C:low-density lipoprotein particle; IEA:UniProtKB-KW.
DR   GO; GO:0034361; C:very-low-density lipoprotein particle; IEA:UniProtKB-KW.
DR   GO; GO:0008047; F:enzyme activator activity; IEA:InterPro.
DR   GO; GO:0016042; P:lipid catabolic process; IEA:UniProtKB-KW.
DR   GO; GO:0006869; P:lipid transport; IEA:UniProtKB-KW.
DR   Gene3D; 1.10.1440.10; -; 1.
DR   InterPro; IPR008019; Apo-CII.
DR   InterPro; IPR023121; ApoC-II_dom_sf.
DR   PANTHER; PTHR16566; PTHR16566; 1.
DR   Pfam; PF05355; Apo-CII; 1.
PE   3: Inferred from homology;
KW   Chylomicron; Glycoprotein; HDL; LDL; Lipid degradation; Lipid metabolism;
KW   Lipid transport; Lipoprotein; Reference proteome; Secreted; Sialic acid;
KW   Signal; Transport; VLDL.
FT   SIGNAL          1..22
FT                   /evidence="ECO:0000255"
FT   CHAIN           23..101
FT                   /note="Proapolipoprotein C-II"
FT                   /id="PRO_5015818369"
FT   CHAIN           29..101
FT                   /note="Apolipoprotein C-II"
FT                   /evidence="ECO:0000250|UniProtKB:P02655"
FT                   /id="PRO_0000448499"
FT   REGION          66..74
FT                   /note="Lipid binding"
FT                   /evidence="ECO:0000250|UniProtKB:P02655"
FT   REGION          78..101
FT                   /note="Lipoprotein lipase cofactor"
FT                   /evidence="ECO:0000250|UniProtKB:P02655"
SQ   SEQUENCE   101 AA;  11285 MW;  A8FDEB51AC95B280 CRC64;
     MGIRYLLVLV LVLLVLGCEV QGAHMPQQDE ATTSSLFTQM QESFYGYWGI AKSAAQGLYE
     KTYLTTMDEK IREIYNKSTA AVSTYAGIFT DQLLSMLKGD Q