1SHP - JenaLib

Title :   THE NMR SOLUTION STRUCTURE OF A KUNITZ-TYPE PROTEINASE INHIBITOR FROM THE SEA ANEMONE STICHODACTYLA HELIANTHUS

Authors :   W. Antuch, K. Berndt, M. Chavez, J. Delfin, K. Wuthrich

Date :   17 Nov 92 (Deposition) - 31 Jan 94 (Release) - 24 Feb 09 (Revision)

Method :   SOLUTION NMR

Resolution :   NOT APPLICABLE

Chains :   NMR Structure  : A  (20x)

Keywords :   Proteinase Inhibitor(Trypsin) (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   W. Antuch, K. D. Berndt, M. A. Chavez, J. Delfin, K. Wuthrich
The Nmr Solution Structure Of A Kunitz-Type Proteinase Inhibitor From The Sea Anemone Stichodactyla Helianthus.
Eur. J. Biochem. V. 212 675 1993
PubMed-ID: 8462542 | Reference-DOI: 10.1111/J.1432-1033.1993.TB17705.X
(for further references see the PDB file header)

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (0, 0)

Sites (0, 0)

SS Bonds (3, 3)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (2, 2)

Exons (0, 0)

Sequences/Alignments

NMR Structure

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Chain A from PDB  Type:PROTEIN  Length:55
 aligned with VKT1_STIHL | P31713 from UniProtKB/Swiss-Prot  Length:55

    Alignment length:55
                                    10        20        30        40        50     
            VKT1_STIHL    1 SICSEPKKVGRCKGYFPRFYFDSETGKCTPFIYGGCGGNGNNFETLHQCRAICRA 55
               SCOP domains d1shpa_ A: Trypsin inhibitor                            SCOP domains
               CATH domains 1shpA00 A:1-55 Factor Xa Inhibitor                      CATH domains
               Pfam domains ------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhh..........eeeeeee....eeeeeee.........e.hhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) --BPTI_KUNITZ_2  PDB: A:3-53 UniProt: 3-53           -- PROSITE (1)
                PROSITE (2) ------------------------------BPTI_KUNITZ_1      ------ PROSITE (2)
                 Transcript ------------------------------------------------------- Transcript
                  1shp A  1 SICSEPKKVGRCKGYFPRFYFDSETGKCTPFIYGGCGGNGNNFETLHQCRAICRA 55
                                    10        20        30        40        50

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Classification and Annotation

SCOP Domains (1, 1)

CATH Domains (1, 1)

Pfam Domains (0, 0)

Gene Ontology (7, 7)

NMR Structure(hide GO term definitions)

Chain A (VKT1_STIHL | P31713)

molecular function
	GO:0019828	aspartic-type endopeptidase inhibitor activity	Stops, prevents or reduces the activity of aspartic-type endopeptidases, enzymes that catalyze the hydrolysis of nonterminal peptide bonds in a polypeptide chain; the optimum reaction pH is below 5 due to an aspartic residue involved in the catalytic process.
	GO:0030414	peptidase inhibitor activity	Stops, prevents or reduces the activity of a peptidase, any enzyme that catalyzes the hydrolysis peptide bonds.
	GO:0004867	serine-type endopeptidase inhibitor activity	Stops, prevents or reduces the activity of serine-type endopeptidases, enzymes that catalyze the hydrolysis of nonterminal peptide bonds in a polypeptide chain; a serine residue (and a histidine residue) are at the active center of the enzyme.
biological process
	GO:0010951	negative regulation of endopeptidase activity	Any process that decreases the frequency, rate or extent of endopeptidase activity, the endohydrolysis of peptide bonds within proteins.
	GO:0010466	negative regulation of peptidase activity	Any process that stops or reduces the rate of peptidase activity, the hydrolysis of peptide bonds within proteins.
cellular component
	GO:0005576	extracellular region	The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
	GO:0042151	nematocyst	An organelle found in cnidoblast (nematoblast) cells. When matured, these stinging organelles store toxins and can deliver them when the cnidocil (a short extension of the cnidocyst) is stimulated by a prey or another stimulus.

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