1W7Z - JenaLib

Asymmetric Unit (Jmol Viewer)

Asym. Unit - sites (Jmol Viewer)

Biological Unit 1 (Jmol Viewer)

Biol. Unit 1 - sites (Jmol Viewer)

Biological Unit 2 (Jmol Viewer)

Biological Unit 3 (Jmol Viewer)

Title :   CRYSTAL STRUCTURE OF THE FREE (UNCOMPLEXED) ECBALLIUM ELATERIUM TRYPSIN INHIBITOR (EETI-II)

Authors :   R. Kraetzner, J. E. Debreczeni, T. Pape, H. Kolmar, T. R. Schneider, I. Uson, G. M. Scheldrick

Date :   14 Sep 04 (Deposition) - 01 Nov 05 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.67

Chains :   Asym. Unit : A,B,C,D,E,F,G,H
Biol. Unit 1: A,B,C,D,E,F  (1x)
Biol. Unit 2: G  (1x)
Biol. Unit 3: H  (1x)

Keywords :   Squash Seed Inhibitor, Cystein Knot, Ecballium Elaterium, Trypsin, Protease Inhibitor (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   R. Kraetzner, J. E. Debreczeni, T. Pape, T. R. Schneider, A. Wentzel, H. Kolmar, G. M. Scheldrick, I. Uson
Structure Of Ecballium Elaterium Trypsin Inhibitor Ii (Eeti-Ii): A Rigid Molecular Scaffold
Acta Crystallogr. , Sect. D V. 61 1255 2005
PubMed-ID: 16131759 | Reference-DOI: 10.1107/S0907444905021207

Molecule 1 - TRYPSIN INHIBITOR II
	Chains	:	A, B, C, D, E, F, G, H
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PLZPWB-ETI-II
	Expression System Strain	:	W3110
	Expression System Taxid	:	562
	Organism Common	:	SQUIRTING CUCUMBER
	Organism Scientific	:	ECBALLIUM ELATERIUM
	Organism Taxid	:	3679
	Synonym	:	EETI-II

		1	2	3	4	5	6	7	8
Asymmetric Unit	:	A	B	C	D	E	F	G	H
Biological Unit 1 (1x)	:	A	B	C	D	E	F
Biological Unit 2 (1x)	:							G
Biological Unit 3 (1x)	:								H

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (2, 6)

No.	Name	Count	Type	Full Name
1	FMT	3	Ligand/Ion	FORMIC ACID
2	NA	3	Ligand/Ion	SODIUM ION

Biological Unit 1 (1, 3)

No.	Name	Count	Type	Full Name
1	FMT	3	Ligand/Ion	FORMIC ACID
2	NA	-1	Ligand/Ion	SODIUM ION

Biological Unit 2 (0, 0)

No.	Name	Count	Type	Full Name
1	FMT	-1	Ligand/Ion	FORMIC ACID
2	NA	-1	Ligand/Ion	SODIUM ION

Biological Unit 3 (0, 0)

No.	Name	Count	Type	Full Name
1	FMT	-1	Ligand/Ion	FORMIC ACID
2	NA	-1	Ligand/Ion	SODIUM ION

Asymmetric Unit (6, 6)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	SER A:13 , CYS A:15 , SER B:13 , ASP B:14 , CYS B:15	BINDING SITE FOR RESIDUE NA A1032
2	AC2	SOFTWARE	SER C:13 , ASP C:14 , CYS C:15 , SER D:13 , CYS D:15	BINDING SITE FOR RESIDUE NA C1032
3	AC3	SOFTWARE	SER E:13 , CYS E:15 , SER F:13 , CYS F:15	BINDING SITE FOR RESIDUE NA E1031
4	AC4	SOFTWARE	ARG B:8 , LEU F:6 , ARG G:4	BINDING SITE FOR RESIDUE FMT B1032
5	AC5	SOFTWARE	LEU B:6 , ARG D:8 , ILE G:5	BINDING SITE FOR RESIDUE FMT D1032
6	AC6	SOFTWARE	ARG F:8 , HOH F:2019 , LEU G:16 , ALA G:17	BINDING SITE FOR RESIDUE FMT F1032

Asymmetric Unit

No.	Residues
1	A:2	-	A:19
2	A:9	-	A:21
3	A:15	-	A:27
4	B:2	-	B:19
5	B:9	-	B:21
6	B:15	-	B:27
7	C:2	-	C:19
8	C:9	-	C:21
9	C:15	-	C:27
10	D:2	-	D:19
11	D:9	-	D:21
12	D:15	-	D:27
13	E:2	-	E:19
14	E:9	-	E:21
15	E:15	-	E:27
16	F:2	-	F:19
17	F:9	-	F:21
18	F:15	-	F:27
19	G:2	-	G:19
20	G:9	-	G:21
21	G:15	-	G:27
22	H:2	-	H:19
23	H:9	-	H:21
24	H:15	-	H:27

(no "Cis Peptide Bond" information available for 1W7Z)

(no "SAP(SNP)/Variant" information available for 1W7Z)

Asymmetric Unit (1, 8)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SQUASH_INHIBITOR	PS00286	Squash family of serine protease inhibitors signature.	ITR2_ECBEL	2-21	8	A:2-21 B:2-21 C:2-21 D:2-21 E:2-21 F:2-21 G:2-21 H:2-21

Biological Unit 1 (1, 6)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SQUASH_INHIBITOR	PS00286	Squash family of serine protease inhibitors signature.	ITR2_ECBEL	2-21	6	A:2-21 B:2-21 C:2-21 D:2-21 E:2-21 F:2-21 - -

Biological Unit 2 (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SQUASH_INHIBITOR	PS00286	Squash family of serine protease inhibitors signature.	ITR2_ECBEL	2-21	1	- - - - - - G:2-21 -

Biological Unit 3 (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SQUASH_INHIBITOR	PS00286	Squash family of serine protease inhibitors signature.	ITR2_ECBEL	2-21	1	- - - - - - - H:2-21

(no "Exon" information available for 1W7Z)

Asymmetric 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)
	SAPs(SNPs)	PROSITE motifs	Exons
	(details for a mapped element are shown in a popup box when the mouse pointer rests over it)

Chain A from PDB  Type:PROTEIN  Length:31
 aligned with ITR2_ECBEL | P12071 from UniProtKB/Swiss-Prot  Length:30

    Alignment length:31
                                                        30 
                                    10        20        30 
            ITR2_ECBEL    1 GCPRILMRCKQDSDCLAGCVCGPNGFCGSP-  -
               SCOP domains d1w7za_ A: automated matches    SCOP domains
               CATH domains ------------------------------- CATH domains
               Pfam domains ------------------------------- Pfam domains
         Sec.struct. author ..........hhhhh....ee.....ee... Sec.struct. author
                 SAPs(SNPs) ------------------------------- SAPs(SNPs)
                    PROSITE -SQUASH_INHIBITOR    ---------- PROSITE
                 Transcript ------------------------------- Transcript
                  1w7z A  1 GCPRILIRCKQDSDCLAGCVCGPNGFCGSPA 31
                                    10        20        30

Chain B from PDB  Type:PROTEIN  Length:31
 aligned with ITR2_ECBEL | P12071 from UniProtKB/Swiss-Prot  Length:30

    Alignment length:31
                                                        30 
                                    10        20        30 
            ITR2_ECBEL    1 GCPRILMRCKQDSDCLAGCVCGPNGFCGSP-  -
               SCOP domains d1w7zb_ B: automated matches    SCOP domains
               CATH domains ------------------------------- CATH domains
               Pfam domains ------------------------------- Pfam domains
         Sec.struct. author ..........hhhhh....ee.....ee... Sec.struct. author
                 SAPs(SNPs) ------------------------------- SAPs(SNPs)
                    PROSITE -SQUASH_INHIBITOR    ---------- PROSITE
                 Transcript ------------------------------- Transcript
                  1w7z B  1 GCPRILIRCKQDSDCLAGCVCGPNGFCGSPA 31
                                    10        20        30

Chain C from PDB  Type:PROTEIN  Length:31
 aligned with ITR2_ECBEL | P12071 from UniProtKB/Swiss-Prot  Length:30

    Alignment length:31
                                                        30 
                                    10        20        30 
            ITR2_ECBEL    1 GCPRILMRCKQDSDCLAGCVCGPNGFCGSP-  -
               SCOP domains d1w7zc_ C: automated matches    SCOP domains
               CATH domains ------------------------------- CATH domains
               Pfam domains ------------------------------- Pfam domains
         Sec.struct. author ..........hhhhh....ee.....ee... Sec.struct. author
                 SAPs(SNPs) ------------------------------- SAPs(SNPs)
                    PROSITE -SQUASH_INHIBITOR    ---------- PROSITE
                 Transcript ------------------------------- Transcript
                  1w7z C  1 GCPRILIRCKQDSDCLAGCVCGPNGFCGSPA 31
                                    10        20        30

Chain D from PDB  Type:PROTEIN  Length:31
 aligned with ITR2_ECBEL | P12071 from UniProtKB/Swiss-Prot  Length:30

    Alignment length:31
                                                        30 
                                    10        20        30 
            ITR2_ECBEL    1 GCPRILMRCKQDSDCLAGCVCGPNGFCGSP-  -
               SCOP domains d1w7zd_ D: automated matches    SCOP domains
               CATH domains ------------------------------- CATH domains
               Pfam domains ------------------------------- Pfam domains
         Sec.struct. author ..........hhhhh....ee.....ee... Sec.struct. author
                 SAPs(SNPs) ------------------------------- SAPs(SNPs)
                    PROSITE -SQUASH_INHIBITOR    ---------- PROSITE
                 Transcript ------------------------------- Transcript
                  1w7z D  1 GCPRILIRCKQDSDCLAGCVCGPNGFCGSPA 31
                                    10        20        30

Chain E from PDB  Type:PROTEIN  Length:30
 aligned with ITR2_ECBEL | P12071 from UniProtKB/Swiss-Prot  Length:30

    Alignment length:30
                                    10        20        30
            ITR2_ECBEL    1 GCPRILMRCKQDSDCLAGCVCGPNGFCGSP 30
               SCOP domains d1w7ze_ E: automated matches   SCOP domains
               CATH domains ------------------------------ CATH domains
               Pfam domains ------------------------------ Pfam domains
         Sec.struct. author ..........hhhhh....ee.....ee.. Sec.struct. author
                 SAPs(SNPs) ------------------------------ SAPs(SNPs)
                    PROSITE -SQUASH_INHIBITOR    --------- PROSITE
                 Transcript ------------------------------ Transcript
                  1w7z E  1 GCPRILIRCKQDSDCLAGCVCGPNGFCGSP 30
                                    10        20        30

Chain F from PDB  Type:PROTEIN  Length:31
 aligned with ITR2_ECBEL | P12071 from UniProtKB/Swiss-Prot  Length:30

    Alignment length:31
                                                        30 
                                    10        20        30 
            ITR2_ECBEL    1 GCPRILMRCKQDSDCLAGCVCGPNGFCGSP-  -
               SCOP domains d1w7zf_ F: automated matches    SCOP domains
               CATH domains ------------------------------- CATH domains
               Pfam domains ------------------------------- Pfam domains
         Sec.struct. author ..........hhhhh....ee.....ee... Sec.struct. author
                 SAPs(SNPs) ------------------------------- SAPs(SNPs)
                    PROSITE -SQUASH_INHIBITOR    ---------- PROSITE
                 Transcript ------------------------------- Transcript
                  1w7z F  1 GCPRILIRCKQDSDCLAGCVCGPNGFCGSPA 31
                                    10        20        30

Chain G from PDB  Type:PROTEIN  Length:30
 aligned with ITR2_ECBEL | P12071 from UniProtKB/Swiss-Prot  Length:30

    Alignment length:30
                                    10        20        30
            ITR2_ECBEL    1 GCPRILMRCKQDSDCLAGCVCGPNGFCGSP 30
               SCOP domains d1w7zg_ G: automated matches   SCOP domains
               CATH domains ------------------------------ CATH domains
               Pfam domains ------------------------------ Pfam domains
         Sec.struct. author ..........hhhhh....ee.....ee.. Sec.struct. author
                 SAPs(SNPs) ------------------------------ SAPs(SNPs)
                    PROSITE -SQUASH_INHIBITOR    --------- PROSITE
                 Transcript ------------------------------ Transcript
                  1w7z G  1 GCPRILIRCKQDSDCLAGCVCGPNGFCGSP 30
                                    10        20        30

Chain H from PDB  Type:PROTEIN  Length:30
 aligned with ITR2_ECBEL | P12071 from UniProtKB/Swiss-Prot  Length:30

    Alignment length:30
                                    10        20        30
            ITR2_ECBEL    1 GCPRILMRCKQDSDCLAGCVCGPNGFCGSP 30
               SCOP domains d1w7zh_ H: automated matches   SCOP domains
               CATH domains ------------------------------ CATH domains
           Pfam domains (1) Squash-1w7zH01 H:1-28       -- Pfam domains (1)
           Pfam domains (2) Squash-1w7zH02 H:1-28       -- Pfam domains (2)
           Pfam domains (3) Squash-1w7zH03 H:1-28       -- Pfam domains (3)
           Pfam domains (4) Squash-1w7zH04 H:1-28       -- Pfam domains (4)
           Pfam domains (5) Squash-1w7zH05 H:1-28       -- Pfam domains (5)
           Pfam domains (6) Squash-1w7zH06 H:1-28       -- Pfam domains (6)
           Pfam domains (7) Squash-1w7zH07 H:1-28       -- Pfam domains (7)
           Pfam domains (8) Squash-1w7zH08 H:1-28       -- Pfam domains (8)
         Sec.struct. author ..........hhhhh....ee.....ee.. Sec.struct. author
                 SAPs(SNPs) ------------------------------ SAPs(SNPs)
                    PROSITE -SQUASH_INHIBITOR    --------- PROSITE
                 Transcript ------------------------------ Transcript
                  1w7z H  1 GCPRILIRCKQDSDCLAGCVCGPNGFCGSP 30
                                    10        20        30

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
		→ Modified Residue	(blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
	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 '\|'

Asymmetric Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: Small proteins (3458)

Fold: Knottins (small inhibitors, toxins, lectins) (761)

Superfamily: Plant inhibitors of proteinases and amylases (30)

Family: Plant inhibitors of proteinases and amylases (30)

Protein domain: automated matches (2)

Jumping cucumber (Ecballium elaterium) [TaxId: 3679] (1)

1a	d1w7za_	A:
1b	d1w7zb_	B:
1c	d1w7zc_	C:
1d	d1w7zd_	D:
1e	d1w7ze_	E:
1f	d1w7zf_	F:
1g	d1w7zg_	G:
1h	d1w7zh_	H:

(no "CATH Domain" information available for 1W7Z)

Asymmetric Unit

Clans(

)

Families(

)

Organisms( (-)

)

Clan: Pept_Inhib_IE (9)

Family: Squash (9)

Ecballium elaterium (Jumping cucumber) (2)

1a	Squash-1w7zH01	H:1-28
1b	Squash-1w7zH02	H:1-28
1c	Squash-1w7zH03	H:1-28
1d	Squash-1w7zH04	H:1-28
1e	Squash-1w7zH05	H:1-28
1f	Squash-1w7zH06	H:1-28
1g	Squash-1w7zH07	H:1-28
1h	Squash-1w7zH08	H:1-28

Asymmetric Unit(hide GO term definitions)

Chain A,B,C,D,E,F,G,H (ITR2_ECBEL | P12071)

molecular function
	GO:0004866	endopeptidase inhibitor activity	Stops, prevents or reduces the activity of an endopeptidase, any enzyme that hydrolyzes nonterminal peptide bonds in polypeptides.
	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.

Asymmetric Unit
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	Cis Peptide Bonds
(no "Cis Peptide Bonds" information available for 1w7z)

Biological Units
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		Biological Unit 1	[ Jena3D ]
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	1w7z
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UniProtKB/Swiss-Prot
	ITR2_ECBEL \| P12071	:	1h9h 1h9i 2c4b 2eti 2it7 2let

1h9h	COMPLEX OF EETI-II WITH PORCINE TRYPSIN
1h9i	COMPLEX OF EETI-II MUTANT WITH PORCINE TRYPSIN
2c4b	INHIBITOR CYSTINE KNOT PROTEIN MCOEETI FUSED TO THE CATALYTICALLY INACTIVE BARNASE MUTANT H102A
2eti	TRYPSIN INHIBITOR II (EETI II)
2let	TRYPSIN INHIBITOR II MUTANT WITH ILE 5 REPLACED BY LEU (I5L) (NMR, 20 STRUCTURES)

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 6)

Sites (6, 6)

SS Bonds (24, 24)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (1, 8)

Exons (0, 0)

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SCOP Domains (1, 8)

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Pfam Domains (1, 8)

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