ID   APOV1_ANAPL             Reviewed;          82 AA.
AC   P02658;
DT   21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT   21-JUL-1986, sequence version 1.
DT   25-MAY-2022, entry version 62.
DE   RecName: Full=Apovitellenin-1;
DE   AltName: Full=Apovitellenin I;
OS   Anas platyrhynchos (Mallard) (Anas boschas).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC   Archelosauria; Archosauria; Dinosauria; Saurischia; Theropoda;
OC   Coelurosauria; Aves; Neognathae; Galloanserae; Anseriformes; Anatidae;
OC   Anatinae; Anas.
OX   NCBI_TaxID=8839;
RN   [1]
RP   PROTEIN SEQUENCE.
RX   PubMed=838046; DOI=10.1016/0014-5793(77)80009-4;
RA   Inglis A.S., Burley R.W.;
RT   "Determination of the amino acid sequence of apovitellenin I from duck's
RT   egg yolk using an improved sequenator procedure: a comparison with other
RT   avian species.";
RL   FEBS Lett. 73:33-37(1977).
CC   -!- FUNCTION: Protein component of the very low density lipoprotein (VLDL)
CC       of egg-laying females. Potent lipoprotein lipase inhibitor, preventing
CC       the loss of triglycerides from VLDL on their way from the liver to the
CC       growing oocytes.
CC   -!- SUBUNIT: Monomer. {ECO:0000305}.
CC   -!- TISSUE SPECIFICITY: Found in egg yolk and in plasma.
CC   -!- SIMILARITY: Belongs to the apovitellenin family. {ECO:0000305}.
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DR   PIR; A03102; VLDK1.
DR   AlphaFoldDB; P02658; -.
DR   SMR; P02658; -.
DR   GO; GO:0042627; C:chylomicron; IEA:InterPro.
DR   GO; GO:0034361; C:very-low-density lipoprotein particle; IEA:UniProtKB-KW.
DR   GO; GO:0004857; F:enzyme inhibitor activity; IEA:InterPro.
DR   GO; GO:0045735; F:nutrient reservoir activity; IEA:UniProtKB-KW.
DR   GO; GO:0006629; P:lipid metabolic process; IEA:InterPro.
DR   InterPro; IPR008404; Apo-VLDL-II.
DR   Pfam; PF05418; Apo-VLDL-II; 1.
DR   PIRSF; PIRSF002369; Apo-VLDL-II; 1.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Storage protein; VLDL.
FT   CHAIN           1..82
FT                   /note="Apovitellenin-1"
FT                   /id="PRO_0000156865"
SQ   SEQUENCE   82 AA;  9492 MW;  3C80C929F6B3C93A CRC64;
     KSIFERDRRD WLVIPDAIAA YIYETVNKMS PRVGQFLADA AQTPVVVGTR TFLIRETSKL
     TLLAEQLMEK IKNLWYTKVL GY