ID   SCA_LILLO               Reviewed;         113 AA.
AC   Q9SW93;
DT   01-MAR-2004, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-2000, sequence version 1.
DT   25-MAY-2022, entry version 63.
DE   RecName: Full=Stigma/stylar cysteine-rich adhesin;
DE   AltName: Full=Lipid transfer protein;
DE   Flags: Precursor;
GN   Name=SCA; Synonyms=LTP;
OS   Lilium longiflorum (Trumpet lily).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; Liliopsida; Liliales; Liliaceae; Lilium.
OX   NCBI_TaxID=4690;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA], PROTEIN SEQUENCE OF 23-57, AND TISSUE
RP   SPECIFICITY.
RC   STRAIN=cv. Nellie white;
RX   PubMed=10634914; DOI=10.2307/3871036;
RA   Park S.Y., Jauh G.Y., Mollet J.-C., Eckard K.J., Nothnagel E.A.,
RA   Walling L.L., Lord E.M.;
RT   "A lipid transfer-like protein is necessary for lily pollen tube adhesion
RT   to an in vitro stylar matrix.";
RL   Plant Cell 12:151-164(2000).
RN   [2]
RP   PECTIN BINDING.
RX   PubMed=11006344; DOI=10.2307/3871186;
RA   Mollet J.-C., Park S.Y., Nothnagel E.A., Lord E.M.;
RT   "A lily stylar pectin is necessary for pollen tube adhesion to an in vitro
RT   stylar matrix.";
RL   Plant Cell 12:1737-1750(2000).
RN   [3]
RP   TISSUE SPECIFICITY, AND DEVELOPMENTAL STAGE.
RX   PubMed=12602877; DOI=10.1023/a:1021139502947;
RA   Park S.Y., Lord E.M.;
RT   "Expression studies of SCA in lily and confirmation of its role in pollen
RT   tube adhesion.";
RL   Plant Mol. Biol. 51:183-189(2003).
CC   -!- FUNCTION: Acts as an adhesive agent between the pollen tube wall and
CC       the stylar transmitting tract epidermis. Binds a stylar pectin in a pH-
CC       dependent manner. Enhances activity of chemocyanin, a diffusible
CC       chemotropic factor.
CC   -!- TISSUE SPECIFICITY: Highly expressed in style and stigma, abundant in
CC       young leaves and petals, and low expression in young anthers at pollen
CC       mother cell stage with an active tapetum. Not expressed in mature
CC       leaves or in pollen grains or tubes. Found in the stylar transmitting
CC       tract epidermis and in the stylar extracellular matrix.
CC       {ECO:0000269|PubMed:10634914, ECO:0000269|PubMed:12602877}.
CC   -!- DEVELOPMENTAL STAGE: Expressed throughout development of the stigma and
CC       style, and then decreases at 6 days after anthesis.
CC       {ECO:0000269|PubMed:12602877}.
CC   -!- SIMILARITY: Belongs to the plant LTP family. {ECO:0000305}.
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DR   EMBL; AF171094; AAD46683.1; -; mRNA.
DR   AlphaFoldDB; Q9SW93; -.
DR   SMR; Q9SW93; -.
DR   GO; GO:0008289; F:lipid binding; IEA:UniProtKB-KW.
DR   GO; GO:0006869; P:lipid transport; IEA:InterPro.
DR   Gene3D; 1.10.110.10; -; 1.
DR   InterPro; IPR036312; Bifun_inhib/LTP/seed_sf.
DR   InterPro; IPR016140; Bifunc_inhib/LTP/seed_store.
DR   InterPro; IPR000528; Plant_nsLTP.
DR   PANTHER; PTHR33076; PTHR33076; 1.
DR   Pfam; PF00234; Tryp_alpha_amyl; 1.
DR   PRINTS; PR00382; LIPIDTRNSFER.
DR   SMART; SM00499; AAI; 1.
DR   SUPFAM; SSF47699; SSF47699; 1.
DR   PROSITE; PS00597; PLANT_LTP; 1.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Disulfide bond; Lipid-binding; Signal;
KW   Transport.
FT   SIGNAL          1..22
FT                   /evidence="ECO:0000269|PubMed:10634914"
FT   CHAIN           23..113
FT                   /note="Stigma/stylar cysteine-rich adhesin"
FT                   /id="PRO_0000018417"
FT   DISULFID        25..72
FT                   /evidence="ECO:0000250"
FT   DISULFID        35..49
FT                   /evidence="ECO:0000250"
FT   DISULFID        50..95
FT                   /evidence="ECO:0000250"
FT   DISULFID        70..109
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   113 AA;  11686 MW;  F2E3D9725EFBE83A CRC64;
     MARSSAVCFL LLLAFLIGTA SAITCGQVDS DLTSCLGYAR KGGVIPPGCC AGVRTLNNLA
     KTTPDRQTAC NCLKSLVNPS LGLNAAIVAG IPGKCGVNIP YPIRMQTDCN KVR