1QLQ - JenaLib

Title :   BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) MUTANT WITH ALTERED BINDING LOOP SEQUENCE

Authors :   H. Czapinska, S. Krzywda, G. M. Sheldrick, J. Otlewski, M. Jaskolski

Date :   10 Sep 99 (Deposition) - 05 Oct 99 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.42

Chains :   Asym./Biol. Unit : A

Keywords :   Serine Protease Inhibitor (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   H. Czapinska, J. Otlewski, S. Krzywda, G. M. Sheldrick, M. Jaskolski
High Resolution Structure Of Bovine Pancreatic Trypsin Inhibitor With Altered Binding Loop Sequence
J. Mol. Biol. V. 295 1237 1999
PubMed-ID: 10653700 | Reference-DOI: 10.1006/JMBI.1999.3445
(for further references see the PDB file header)

Compounds

Molecule 1 - PANCREATIC TRYPSIN INHIBITOR
	Chains	:	A
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Strain	:	BL21(DE3)
	Expression System Taxid	:	469008
	Expression System Variant	:	T7
	Mutation	:	YES
	Organ	:	PANCREAS
	Organism Common	:	BOVINE
	Organism Scientific	:	BOS TAURUS
	Organism Taxid	:	9913
	Synonym	:	BPTI, APROTININ, TRASYLOL, BASIC PROTEASE INHIBITOR

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (1, 4)

Sites (4, 4)

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	GLU A:7 , ARG A:42 , HOH A:2089 , HOH A:2091 , HOH A:2092	BINDING SITE FOR RESIDUE SO4 A 61
2	AC2	SOFTWARE	ARG A:20 , TYR A:35 , ALA A:40 , ARG A:53 , HOH A:2093 , HOH A:2094 , HOH A:2095	BINDING SITE FOR RESIDUE SO4 A 62
3	AC3	SOFTWARE	ARG A:1 , PRO A:2 , ARG A:42 , ALA A:58 , HOH A:2096 , HOH A:2097	BINDING SITE FOR RESIDUE SO4 A 63
4	AC4	SOFTWARE	CYS A:14 , ARG A:15 , LYS A:46	BINDING SITE FOR RESIDUE SO4 A 64

SS Bonds (4, 4)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (2, 2)

Exons (0, 0)

Sequences/Alignments

Asymmetric/Biological Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
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Chain A from PDB  Type:PROTEIN  Length:58
 aligned with BPT1_BOVIN | P00974 from UniProtKB/Swiss-Prot  Length:100

    Alignment length:58
                                    45        55        65        75        85        
            BPT1_BOVIN   36 RPDFCLEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCMRTCGGA 93
               SCOP domains d1qlqa_ A: Pancreatic trypsin inhibitor, BPTI              SCOP domains
               CATH domains 1qlqA00 A:1-58 Factor Xa Inhibitor                         CATH domains
               Pfam domains ---Kunitz_BPTI-1qlqA01 A:4-56                           -- Pfam domains
         Sec.struct. author .hhhhhh..........eeeeeee....eeeeeee...........hhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ----BPTI_KUNITZ_2  PDB: A:5-55 UniProt: 40-90          --- PROSITE (1)
                PROSITE (2) --------------------------------BPTI_KUNITZ_1      ------- PROSITE (2)
                 Transcript ---------------------------------------------------------- Transcript
                  1qlq A  1 RPDFCLEPPYAGACRARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCLRTCGGA 58
                                    10        20        30        40        50

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	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

Classification and Annotation

SCOP Domains (1, 1)

CATH Domains (1, 1)

Pfam Domains (1, 1)

Gene Ontology (9, 9)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A (BPT1_BOVIN | P00974)

molecular function
	GO:0030414	peptidase inhibitor activity	Stops, prevents or reduces the activity of a peptidase, any enzyme that catalyzes the hydrolysis peptide bonds.
	GO:0019870	potassium channel inhibitor activity	Stops, prevents, or reduces the activity of a potassium channel.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
	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.
	GO:0090331	negative regulation of platelet aggregation	Any process that decreases the rate, frequency or extent of platelet aggregation. Platelet aggregation is the adhesion of one platelet to one or more other platelets via adhesion molecules.
	GO:0070495	negative regulation of thrombin-activated receptor signaling pathway	Any process that stops, prevents, or reduces the frequency, rate or extent of thrombin-activated receptor protein signaling pathway activity. A thrombin receptor signaling pathway is the series of molecular signals generated as a consequence of a thrombin-activated receptor binding to one of its physiological ligands.
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.

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Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

Related Entries Specified in the PDB File

1aal	BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI, BASIC) MUTANT WITH CYS 30 REPLACED BY VAL AND CYS 51 REPLACED BY ALA
1b0c	EVIDENCE OF A COMMON DECAMER IN THREE CRYSTAL STRUCTURES OF BPTI, CRYSTALLIZED FROM THIOCYANATE, CHLORIDE OR SULFATE
1bpi	BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) (CRYSTAL FORM II)
1bpt	BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) MUTANT (TYR 23 REPLACED BY ALA)
1bti	BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) MUTANT WITH PHE 22 REPLACED BY ALA
1bz5	EVIDENCE OF A COMMON DECAMER IN THREE CRYSTAL STRUCTURES OF BPTI, CRYSTALLIZE FROM THIOCYANTE, CHLORIDE OR SULFATE OTHER PDB ENTRIES RELATED TO PANCREATIC TRYPSIN INHIBITOR ARE THE ENZYME/INHIBITOR COMPLEXES: 1TPA, 2PTC, 2TGP, 2TPI, 3TPI, 4TPI, 2KAI, 1BRB, 1MTN, 1BTH, 1CBW, 3TGI, 3TGJ
1fan	BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) MUTANT WITH PHE 45 REPLACED BY ALA
1nag	BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) MUTANT WITH ASN 43 REPLACED BY GLY
1pit	TRYPSIN INHIBITOR (NMR, 20 STRUCTURES)
4pti	TRYPSIN INHIBITOR
5pti	TRYPSIN INHIBITOR (CRYSTAL FORM II)
6pti	BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI, CRYSTAL FORM III)
7pti	BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) MUTANT (CYS 30 REPLACED BY ALA, CYS 51 REPLACED BY ALA)
8pti	BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) MUTANT (TYR 35 REPLACED BY GLY)
9pti	BASIC PANCREATIC TRYPSIN INHIBITOR (MET 52 OXIDIZED)

Description