ID   CYT_SOYBN               Reviewed;          48 AA.
AC   P25973;
DT   01-MAY-1992, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1992, sequence version 1.
DT   03-AUG-2022, entry version 79.
DE   RecName: Full=Cystatin;
DE   AltName: Full=Low molecular mass protein inhibitor of cysteine proteinases;
DE   Flags: Fragment;
OS   Glycine max (Soybean) (Glycine hispida).
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; Phaseoleae; Glycine;
OC   Glycine subgen. Soja.
OX   NCBI_TaxID=3847;
RN   [1]
RP   PROTEIN SEQUENCE.
RC   TISSUE=Seed;
RX   PubMed=2400578; DOI=10.1515/bchm3.1990.371.1.167;
RA   Brzin J., Ritonja A., Popovic T., Turk V.;
RT   "Low molecular mass protein inhibitor of cysteine proteinases from
RT   soybean.";
RL   Biol. Chem. Hoppe-Seyler 371:167-170(1990).
CC   -!- FUNCTION: Inhibits papain and cathepsin B (very poorly).
CC   -!- SIMILARITY: Belongs to the cystatin family. Phytocystatin subfamily.
CC       {ECO:0000305}.
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DR   PIR; S10588; S10588.
DR   AlphaFoldDB; P25973; -.
DR   SMR; P25973; -.
DR   STRING; 3847.GLYMA14G04250.1; -.
DR   MEROPS; I25.014; -.
DR   PRIDE; P25973; -.
DR   Proteomes; UP000008827; Unplaced.
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   PANTHER; PTHR11413; PTHR11413; 1.
DR   Pfam; PF00031; Cystatin; 1.
DR   SUPFAM; SSF54403; SSF54403; 1.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Protease inhibitor; Reference proteome;
KW   Thiol protease inhibitor.
FT   CHAIN           <1..>48
FT                   /note="Cystatin"
FT                   /id="PRO_0000207160"
FT   MOTIF           44..48
FT                   /note="Secondary area of contact"
FT   NON_TER         1
FT   NON_TER         48
SQ   SEQUENCE   48 AA;  5275 MW;  D2E8408231444C15 CRC64;
     GFTDITGAQN SIDIENLARF AVDEHNKKEN AVLEFVRVKS AKKQVVSG