ID   SPZ2A_WHEAT             Reviewed;         398 AA.
AC   Q9ST57;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-2000, sequence version 1.
DT   25-MAY-2022, entry version 83.
DE   RecName: Full=Serpin-Z2A;
DE   AltName: Full=TriaeZ2a;
DE   AltName: Full=WSZ2a;
OS   Triticum aestivum (Wheat).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; BOP clade;
OC   Pooideae; Triticodae; Triticeae; Triticinae; Triticum.
OX   NCBI_TaxID=4565;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA], PARTIAL PROTEIN SEQUENCE, AND FUNCTION.
RC   STRAIN=cv. Chinese Spring; TISSUE=Grain;
RX   PubMed=10874043; DOI=10.1074/jbc.m004633200;
RA   Oestergaard H., Rasmussen S.K., Roberts T.H., Hejgaard J.;
RT   "Inhibitory serpins from wheat grain with reactive centers resembling
RT   glutamine-rich repeats of prolamin storage proteins. Cloning and
RT   characterization of five major molecular forms.";
RL   J. Biol. Chem. 275:33272-33279(2000).
CC   -!- FUNCTION: Inhibits chymotrypsin and cathepsin G in vitro.
CC       {ECO:0000269|PubMed:10874043}.
CC   -!- DOMAIN: The reactive center loop (RCL) extends out from the body of the
CC       protein and directs binding to the target protease. The protease
CC       cleaves the serpin at the reactive site within the RCL, establishing a
CC       covalent linkage between the carboxyl group of the serpin reactive site
CC       and the serine hydroxyl of the protease. The resulting inactive serpin-
CC       protease complex is highly stable (By similarity). {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the serpin family. {ECO:0000305}.
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DR   EMBL; AJ245879; CAB52710.1; -; mRNA.
DR   AlphaFoldDB; Q9ST57; -.
DR   SMR; Q9ST57; -.
DR   STRING; 4565.Traes_5BL_22ED571AE.1; -.
DR   Allergome; 5724; Tri a 33.
DR   Allergome; 9500; Tri a 33.0101.
DR   MEROPS; I04.032; -.
DR   PRIDE; Q9ST57; -.
DR   EnsemblPlants; TraesCS5B02G419900.1; TraesCS5B02G419900.1; TraesCS5B02G419900.
DR   Gramene; TraesCS5B02G419900.1; TraesCS5B02G419900.1; TraesCS5B02G419900.
DR   eggNOG; KOG2392; Eukaryota.
DR   HOGENOM; CLU_023330_4_0_1; -.
DR   OMA; KDVWRGL; -.
DR   Proteomes; UP000019116; Unplaced.
DR   Genevisible; Q9ST57; TA.
DR   GO; GO:0005615; C:extracellular space; IBA:GO_Central.
DR   GO; GO:0004867; F:serine-type endopeptidase inhibitor activity; IEA:UniProtKB-KW.
DR   Gene3D; 2.30.39.10; -; 1.
DR   Gene3D; 3.30.497.10; -; 1.
DR   InterPro; IPR023795; Serpin_CS.
DR   InterPro; IPR023796; Serpin_dom.
DR   InterPro; IPR000215; Serpin_fam.
DR   InterPro; IPR036186; Serpin_sf.
DR   InterPro; IPR042178; Serpin_sf_1.
DR   InterPro; IPR042185; Serpin_sf_2.
DR   PANTHER; PTHR11461; PTHR11461; 1.
DR   Pfam; PF00079; Serpin; 1.
DR   SMART; SM00093; SERPIN; 1.
DR   SUPFAM; SSF56574; SSF56574; 1.
DR   PROSITE; PS00284; SERPIN; 1.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Protease inhibitor; Reference proteome;
KW   Serine protease inhibitor.
FT   CHAIN           1..398
FT                   /note="Serpin-Z2A"
FT                   /id="PRO_0000334571"
FT   REGION          343..367
FT                   /note="RCL"
FT   SITE            357..358
FT                   /note="Reactive bond"
SQ   SEQUENCE   398 AA;  43311 MW;  AA6AE41D46AAF3B0 CRC64;
     MATTLATDVR LSIAHQTRFG FRLASTISSN PESTANNVAF SPVSLHVALS LITAGAGGAT
     RDQLVATLGE GEAERLHALA EQVVQFVLAD ASYADSPRVT FANGVFVDAS LPLKPSFQEL
     AVCKYKAEAQ SVDFQTKAAE VTAQVNSWVE KVTTGLIKDI LPAGSISNTT RLVLGNALYF
     KGAWTDQFDS RVTKSDYFYL LDGSSIQTPF MYSSEEQYIS SSDGLKVLKL PYKQGGDKRQ
     FSMYILLPEA PSGIWSLAEK LSAEPELLER HIPRQKVALR QFKLPKFKIS FGIEASDLLK
     HLGLQLPFSD EADLSEMVDS PMPQGLRISS VFHKTFVEVN ETGTEAAAAT IAKAVLLSAS
     PPSDMDFIAD HPFLFLIRED TSGVVLFIGH VVNPLRSL