ID   OLEO_HELAN              Reviewed;         181 AA.
AC   P29529;
DT   01-APR-1993, integrated into UniProtKB/Swiss-Prot.
DT   01-APR-1993, sequence version 1.
DT   03-AUG-2022, entry version 58.
DE   RecName: Full=Oleosin;
DE   Flags: Fragment;
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 [MRNA].
RC   STRAIN=cv. Single Tall;
RX   PubMed=1643288; DOI=10.1007/bf00027084;
RA   Cummins I., Murphy D.J.;
RT   "cDNA sequence of a sunflower oleosin and transcript tissue specificity.";
RL   Plant Mol. Biol. 19:873-876(1992).
CC   -!- FUNCTION: May have a structural role to stabilize the lipid body during
CC       desiccation of the seed by preventing coalescence of the oil. Probably
CC       interacts with both lipid and phospholipid moieties of lipid bodies.
CC       May also provide recognition signals for specific lipase anchorage in
CC       lipolysis during seedling growth.
CC   -!- SUBCELLULAR LOCATION: Lipid droplet. Membrane; Multi-pass membrane
CC       protein. Note=Surface of oil bodies. Oleosins exist at a monolayer
CC       lipid/water interface.
CC   -!- SIMILARITY: Belongs to the oleosin family. {ECO:0000305}.
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DR   EMBL; X62352; CAA44224.1; -; mRNA.
DR   PIR; S23521; S23521.
DR   PIR; S70453; S70453.
DR   AlphaFoldDB; P29529; -.
DR   SMR; P29529; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0012511; C:monolayer-surrounded lipid storage body; IEA:InterPro.
DR   GO; GO:0022414; P:reproductive process; IEA:UniProt.
DR   InterPro; IPR000136; Oleosin.
DR   PANTHER; PTHR33203; PTHR33203; 1.
DR   Pfam; PF01277; Oleosin; 1.
DR   PROSITE; PS00811; OLEOSINS; 1.
PE   2: Evidence at transcript level;
KW   Lipid droplet; Membrane; Transmembrane; Transmembrane helix.
FT   CHAIN           <1..181
FT                   /note="Oleosin"
FT                   /id="PRO_0000108140"
FT   TRANSMEM        38..58
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        69..89
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        90..110
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   REGION          <1..38
FT                   /note="Polar"
FT   REGION          1..28
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          39..110
FT                   /note="Hydrophobic"
FT   REGION          155..181
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        12..26
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   NON_TER         1
SQ   SEQUENCE   181 AA;  19205 MW;  C21AC64639E59C58 CRC64;
     TTTTYDRHFT TTQPHYRQDD RSRYDQQTHS QSTSRTLAII ALLPVGGILL GLAALTFIGT
     LIGLALATPL FVIFSPIIVP AVLTIGLAVT GFLASGTFGL TGLSSLSYLF NMVRQTAGSV
     PESLDYVKGT LQDAGEYAGQ KTKDFGQKIQ STAHEMGDQG QVGVHAQVGG GKEGRKSGDR
     T