ID   SPI_HALRO               Reviewed;          10 AA.
AC   Q10997;
DT   01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1996, sequence version 1.
DT   11-DEC-2019, entry version 40.
DE   RecName: Full=Serine proteinase inhibitor;
DE   Flags: Fragment;
OS   Halocynthia roretzi (Sea squirt) (Cynthia roretzi).
OC   Eukaryota; Metazoa; Chordata; Tunicata; Ascidiacea; Stolidobranchia;
OC   Pyuridae; Halocynthia.
OX   NCBI_TaxID=7729;
RN   [1]
RP   PROTEIN SEQUENCE.
RC   TISSUE=Hemolymph;
RX   PubMed=8759295; DOI=10.1016/0305-0491(95)02110-8;
RA   Shishikura F., Abe T., Ohtake S., Tanaka K.;
RT   "Purification and characterization of a 58,000-Da proteinase inhibitor from
RT   the hemolymph of a solitary ascidian, Halocynthia roretzi.";
RL   Comp. Biochem. Physiol. 114B:1-9(1996).
CC   -!- FUNCTION: Strongly inhibits trypsin and plasma enzyme(s) activity.
CC   -!- SUBUNIT: Monomer.
CC   -!- SIMILARITY: Belongs to the serpin family. {ECO:0000305}.
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DR   GO; GO:0004867; F:serine-type endopeptidase inhibitor activity; IEA:UniProtKB-KW.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Protease inhibitor; Serine protease inhibitor.
FT   CHAIN           1..>10
FT                   /note="Serine proteinase inhibitor"
FT                   /id="PRO_0000094132"
FT   NON_TER         10
SQ   SEQUENCE   10 AA;  1104 MW;  4225C73B1B187AA3 CRC64;
     TKKDGEEKVA