ID   CYT_SOLTU               Reviewed;          66 AA.
AC   Q03196;
DT   01-JUN-1994, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-1994, sequence version 1.
DT   03-AUG-2022, entry version 85.
DE   RecName: Full=Cysteine proteinase inhibitor;
DE   Flags: Fragment;
GN   Name=CYS-PIN;
OS   Solanum tuberosum (Potato).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; lamiids; Solanales; Solanaceae; Solanoideae; Solaneae; Solanum.
OX   NCBI_TaxID=4113;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   STRAIN=cv. Desiree; TISSUE=Leaf;
RX   PubMed=1392612; DOI=10.2307/3869484;
RA   Hildmann T., Ebneth M., Pena-Cortes H., Sanchez-Serrano J.J.,
RA   Willmitzer L., Prat S.;
RT   "General roles of abscisic and jasmonic acids in gene activation as a
RT   result of mechanical wounding.";
RL   Plant Cell 4:1157-1170(1992).
CC   -!- TISSUE SPECIFICITY: In tubers of untreated plants. After ABA treatment
CC       or mechanical wounding is mostly accumulated in leaves, to a lesser
CC       extent in stems, but not in roots.
CC   -!- INDUCTION: By abscisic acid (ABA), jasmonic acid (JA) and wounding.
CC   -!- SIMILARITY: Belongs to the cystatin family. Phytocystatin subfamily.
CC       {ECO:0000305}.
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DR   EMBL; X67844; CAA48037.1; -; mRNA.
DR   PIR; PQ0469; PQ0469.
DR   AlphaFoldDB; Q03196; -.
DR   SMR; Q03196; -.
DR   STRING; 4113.PGSC0003DMT400015254; -.
DR   MEROPS; I25.040; -.
DR   eggNOG; ENOG502R76G; Eukaryota.
DR   InParanoid; Q03196; -.
DR   Proteomes; UP000011115; Unassembled WGS sequence.
DR   ExpressionAtlas; Q03196; baseline and differential.
DR   GO; GO:0004869; F:cysteine-type endopeptidase inhibitor activity; IBA:GO_Central.
DR   CDD; cd00042; CY; 1.
DR   InterPro; IPR027214; Cystatin.
DR   InterPro; IPR000010; Cystatin_dom.
DR   InterPro; IPR046350; Cystatin_sf.
DR   InterPro; IPR018073; Prot_inh_cystat_CS.
DR   PANTHER; PTHR11413; PTHR11413; 1.
DR   Pfam; PF00031; Cystatin; 1.
DR   SUPFAM; SSF54403; SSF54403; 1.
DR   PROSITE; PS00287; CYSTATIN; 1.
PE   2: Evidence at transcript level;
KW   Protease inhibitor; Reference proteome; Stress response;
KW   Thiol protease inhibitor.
FT   CHAIN           <1..66
FT                   /note="Cysteine proteinase inhibitor"
FT                   /id="PRO_0000207158"
FT   MOTIF           18..22
FT                   /note="Secondary area of contact"
FT   NON_TER         1
SQ   SEQUENCE   66 AA;  7906 MW;  70C2832D0E777631 CRC64;
     QTQNAHLEFV EVLNVKEQVV AGMMYYITLV ATDDGYKKIY KTKIWVKEWE NFKEVQEFKQ
     IVYATK