ID   CYT3_WISFL              Reviewed;          46 AA.
AC   P19864;
DT   01-FEB-1991, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1991, sequence version 1.
DT   25-MAY-2022, entry version 66.
DE   RecName: Full=Cystatin WCPI-3;
DE   Flags: Fragments;
OS   Wisteria floribunda (Japanese wisteria) (Glycine floribunda).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; fabids; Fabales; Fabaceae; Papilionoideae; 50 kb inversion clade;
OC   NPAAA clade; indigoferoid/millettioid clade; Wisterieae; Wisteria.
OX   NCBI_TaxID=3922;
RN   [1]
RP   PROTEIN SEQUENCE.
RC   TISSUE=Seed;
RX   PubMed=2292589; DOI=10.1093/oxfordjournals.jbchem.a123250;
RA   Hirashiki I., Ogata F., Yoshida N., Makisumi S., Ito A.;
RT   "Purification and complex formation analysis of a cysteine proteinase
RT   inhibitor (cystatin) from seeds of Wisteria floribunda.";
RL   J. Biochem. 108:604-608(1990).
CC   -!- FUNCTION: Inhibitor of papain.
CC   -!- SIMILARITY: Belongs to the cystatin family. Phytocystatin subfamily.
CC       {ECO:0000305}.
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DR   PIR; PX0039; PX0039.
DR   AlphaFoldDB; P19864; -.
DR   SMR; P19864; -.
DR   MEROPS; I25.950; -.
DR   GO; GO:0004869; F:cysteine-type endopeptidase inhibitor activity; IEA:UniProtKB-KW.
DR   CDD; cd00042; CY; 1.
DR   InterPro; IPR000010; Cystatin_dom.
DR   InterPro; IPR046350; Cystatin_sf.
DR   SUPFAM; SSF54403; SSF54403; 1.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Protease inhibitor; Thiol protease inhibitor.
FT   CHAIN           1..>46
FT                   /note="Cystatin WCPI-3"
FT                   /id="PRO_0000207162"
FT   MOTIF           35..38
FT                   /note="Secondary area of contact"
FT   NON_CONS        34..35
FT                   /evidence="ECO:0000305"
FT   NON_TER         46
SQ   SEQUENCE   46 AA;  5048 MW;  A921857846FEA084 CRC64;
     YGNTGGYTPV PDIDDIHVVE IANYAVTEYN KKSGVVAGVN YRFVLK