ID   CAL1_CALGI              Reviewed;          14 AA.
AC   P20728;
DT   01-FEB-1991, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1991, sequence version 1.
DT   03-AUG-2022, entry version 52.
DE   RecName: Full=Calotropin-DI;
DE            EC=3.4.22.-;
DE   Flags: Fragment;
OS   Calotropis gigantea (Giant milkweed) (Asclepias gigantea).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; lamiids; Gentianales; Apocynaceae; Asclepiadoideae; Asclepiadeae;
OC   Asclepiadinae; Calotropis.
OX   NCBI_TaxID=4066;
RN   [1]
RP   PROTEIN SEQUENCE, AND PYROGLUTAMATE FORMATION AT GLN-1.
RA   Bhattacharya D., Sengupta A., Sinha N.K.;
RT   "Chemical modification and amino terminal sequence of calotropin DI from
RT   Calotropis gigantea.";
RL   Phytochemistry 26:633-636(1987).
CC   -!- SIMILARITY: Belongs to the peptidase C1 family. {ECO:0000255|PROSITE-
CC       ProRule:PRU10088, ECO:0000255|PROSITE-ProRule:PRU10089,
CC       ECO:0000255|PROSITE-ProRule:PRU10090}.
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DR   PIR; PT0026; PT0026.
DR   MEROPS; C01.011; -.
DR   GO; GO:0008234; F:cysteine-type peptidase activity; IEA:UniProtKB-KW.
DR   GO; GO:0006508; P:proteolysis; IEA:UniProtKB-KW.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Hydrolase; Protease;
KW   Pyrrolidone carboxylic acid; Thiol protease.
FT   CHAIN           1..>14
FT                   /note="Calotropin-DI"
FT                   /id="PRO_0000050548"
FT   MOD_RES         1
FT                   /note="Pyrrolidone carboxylic acid"
FT                   /evidence="ECO:0000269|Ref.1"
FT   NON_TER         14
SQ   SEQUENCE   14 AA;  1715 MW;  D993F0276CDA4662 CRC64;
     QRPEYPVWRE KGAV