ID   2SS5_HELAN              Reviewed;         295 AA.
AC   P15461;
DT   01-APR-1990, integrated into UniProtKB/Swiss-Prot.
DT   01-APR-1990, sequence version 1.
DT   25-MAY-2022, entry version 81.
DE   RecName: Full=2S seed storage protein;
DE   AltName: Full=2S albumin storage protein;
DE   Flags: Precursor;
GN   Name=HAG5;
OS   Helianthus annuus (Common sunflower).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; campanulids; Asterales; Asteraceae; Asteroideae;
OC   Heliantheae alliance; Heliantheae; Helianthus.
OX   NCBI_TaxID=4232;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND PROTEIN SEQUENCE OF 162-173.
RC   STRAIN=cv. Giant grey stripe;
RX   PubMed=2830455; DOI=10.1007/bf00325686;
RA   Allen R.D., Cohen E.A., Vonder Haar R.A., Adams C.A., Ma D.P.,
RA   Nessler C.L., Thomas T.L.;
RT   "Sequence and expression of a gene encoding an albumin storage protein in
RT   sunflower.";
RL   Mol. Gen. Genet. 210:211-218(1987).
CC   -!- FUNCTION: This is a 2S seed storage protein.
CC   -!- PTM: The 38 kDa precursor may be cleaved into two polypeptides of
CC       approximately the same size. The mature protein is composed of a single
CC       polypeptide containing one or more intra-molecular disulfide linkages.
CC   -!- SIMILARITY: Belongs to the 2S seed storage albumins family.
CC       {ECO:0000305}.
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DR   EMBL; X06410; CAA29699.1; -; Genomic_DNA.
DR   PIR; S01062; S01062.
DR   AlphaFoldDB; P15461; -.
DR   SMR; P15461; -.
DR   GO; GO:0045735; F:nutrient reservoir activity; IEA:UniProtKB-KW.
DR   CDD; cd00261; AAI_SS; 1.
DR   Gene3D; 1.10.110.10; -; 2.
DR   InterPro; IPR044723; AAI_SS_dom.
DR   InterPro; IPR036312; Bifun_inhib/LTP/seed_sf.
DR   InterPro; IPR016140; Bifunc_inhib/LTP/seed_store.
DR   InterPro; IPR000617; Napin/2SS/CON.
DR   PANTHER; PTHR35496; PTHR35496; 3.
DR   Pfam; PF00234; Tryp_alpha_amyl; 2.
DR   PRINTS; PR00496; NAPIN.
DR   SMART; SM00499; AAI; 2.
DR   SUPFAM; SSF47699; SSF47699; 2.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Disulfide bond; Seed storage protein; Signal;
KW   Storage protein.
FT   SIGNAL          1..20
FT                   /evidence="ECO:0000255"
FT   PROPEP          21..161
FT                   /evidence="ECO:0000255"
FT                   /id="PRO_0000032151"
FT   CHAIN           162..295
FT                   /note="2S seed storage protein"
FT                   /id="PRO_0000032152"
FT   REGION          195..215
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   295 AA;  34071 MW;  8958A106805142A1 CRC64;
     MAKQIVLALA FAALVAFATA HTTIITTTIE DENPISGQRQ VSQRIQGQRL NQCRMFLQQG
     QNIPREFDNP QMGRQQEQQL QQCCQELQNI EGQCQCEAVK QVFREAQQQV QQQQGRQLVP
     FRGSQQTQQL KQKAQILPNV CNLQSRRCEI GTITTTVTES NIDIPFRDRP FGTGSQQCRE
     TEIQRPVGEC QRFVEQQMQQ SPRSTRPYQQ RPGQQQQQQR GLQQQCCNEL QNVKRECHCE
     AIQEVARRVM RQPQQQQQQR RGQFGGQEME TARRVIQNLP NQCDLEVQQC TTCTG