1CIQ - JenaLib

Title :   COMPLEX OF TWO FRAGMENTS OF CI2, RESIDUES 1-40 AND 41-64

Authors :   A. M. Buckle, A. R. Fersht

Date :   02 Oct 95 (Deposition) - 08 Mar 96 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.20

Chains :   Asym. Unit : A,B
Biol. Unit 1: A,B  (6x)
Biol. Unit 2: A,B  (1x)

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

Reference :   J. L. Neira, B. Davis, A. G. Ladurner, A. M. Buckle, P. Gay Gde, A. R. Fersht
Towards The Complete Structural Characterization Of A Protein Folding Pathway: The Structures Of The Denatured, Transition And Native States For The Association/Folding Of Two Complementary Fragments Of Cleaved Chymotrypsin Inhibitor 2. Direct Evidence For A Nucleation-Condensation Mechanism
Structure Fold. Des. V. 1 189 1996
PubMed-ID: 9079381 | Reference-DOI: 10.1016/S1359-0278(96)00031-4
(for further references see the PDB file header)

Compounds

Molecule 1 - CHYMOTRYPSIN INHIBITOR 2
	Chains	:	A
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PTZ18U
	Expression System Taxid	:	562
	Fragment	:	RESIDUES 1 - 40, 41 - 64
	Organism Scientific	:	HORDEUM VULGARE
	Organism Taxid	:	4513
	Other Details	:	CLEAVED BETWEEN 40 AND 41
	Strain	:	HIPROLY
	Synonym	:	CI2

Molecule 2 - CHYMOTRYPSIN INHIBITOR 2
	Chains	:	B
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PTZ18U
	Expression System Taxid	:	562
	Fragment	:	RESIDUES 1 - 40, 41 - 64
	Organism Scientific	:	HORDEUM VULGARE
	Organism Taxid	:	4513
	Other Details	:	CLEAVED BETWEEN 40 AND 41
	Strain	:	HIPROLY
	Synonym	:	CI2

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (0, 0)

Sites (0, 0)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (1, 1)

Asymmetric Unit (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	POTATO_INHIBITOR	PS00285	Potato inhibitor I family signature.	ICI2_HORVU	25-36	1	A:5-16

Biological Unit 1 (1, 6)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	POTATO_INHIBITOR	PS00285	Potato inhibitor I family signature.	ICI2_HORVU	25-36	6	A:5-16

Biological Unit 2 (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	POTATO_INHIBITOR	PS00285	Potato inhibitor I family signature.	ICI2_HORVU	25-36	1	A:5-16

Exons (0, 0)

Sequences/Alignments

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:37
 aligned with ICI2_HORVU | P01053 from UniProtKB/Swiss-Prot  Length:84

    Alignment length:37
                                    31        41        51       
            ICI2_HORVU   22 KTEWPELVGKSVEEAKKVILQDKPEAQIIVLPVGTIV 58
               SCOP domains d1ciq.1 A:,B:                         SCOP domains
               CATH domains 1ciqA00 A:2-38                        CATH domains
               Pfam domains ------------------------------------- Pfam domains
         Sec.struct. author ....hhh....hhhhhhhhhhh....eeeeee..... Sec.struct. author
                 SAPs(SNPs) ------------------------------------- SAPs(SNPs)
                    PROSITE ---POTATO_INHIB---------------------- PROSITE
                 Transcript ------------------------------------- Transcript
                  1ciq A  2 KTEWPELVGKSVEEAKKVILQDKPEAQIIVLPVGTIV 38
                                    11        21        31

Chain B from PDB  Type:PROTEIN  Length:24
 aligned with ICI2_HORVU | P01053 from UniProtKB/Swiss-Prot  Length:84

    Alignment length:24
                                    70        80    
            ICI2_HORVU   61 EYRIDRVRLFVDKLDNIAQVPRVG 84
               SCOP domains d1ciq.1 A:,B:            SCOP domains
               CATH domains ------------------------ CATH domains
               Pfam domains ------------------------ Pfam domains
         Sec.struct. author .....eeeeee............. Sec.struct. author
                 SAPs(SNPs) ------------------------ SAPs(SNPs)
                    PROSITE ------------------------ PROSITE
                 Transcript ------------------------ Transcript
                  1ciq B 41 EYRIDRVRLFVDKLDNIAQVPRVG 64
                                    50        60

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 '\|'

Classification and Annotation

SCOP Domains (1, 1)

CATH Domains (1, 1)

Pfam Domains (0, 0)

Gene Ontology (5, 5)

Asymmetric Unit(hide GO term definitions)

Chain A,B (ICI2_HORVU | P01053)

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: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:0009611	response to wounding	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating damage to the organism.

Visualization

Interactive Views

Asymmetric Unit
	Complete Structure
		Jena3D(integrated viewing of ligand, site, SAP, PROSITE, SCOP information)
		WebMol \| AstexViewer[tm]@PDBe (Java Applets, require no local installation except for Java; loading may be slow)
		STRAP (Java WebStart application, automatic local installation, requires Java; full application with system access!)
		RasMol (require local installation)
		Molscript (VRML) (requires installation of a VRML viewer; select preferred view via VRML and generate a mono or stereo PDF format file)

	Ligands, Modified Residues, Ions
(no "Ligands, Modified Residues, Ions" information available for 1ciq)

	Sites
(no "Sites" information available for 1ciq)

	Cis Peptide Bonds
(no "Cis Peptide Bonds" information available for 1ciq)

Biological Units
	Complete Structure
		Biological Unit 1	[ Jena3D ]
		Biological Unit 2	[ Jena3D ]

Still Images

Databases and Analysis Tools

Databases

Access by PDB/NDB ID
	1ciq
		Family and Domain Information	:	ProDom \| SYSTERS
		General Structural Information	:	GlycoscienceDB \| MMDB \| NDB \| OCA \| PDB \| PDBe \| PDBj \| PDBsum \| PDBWiki \| PQS \| PROTEOPEDIA
		Orientation in Membranes	:	OPM
		Protein Surface	:	SURFACE
		Secondary Structure	:	DSSP (structure derived) \| HSSP (homology derived)
		Structural Genomics	:	GeneCensus
		Structural Neighbours	:	CE \| VAST
		Structure Classification	:	CATH \| Dali \| SCOP
		Validation and Original Data	:	BMRB Data View \| BMRB Restraints Grid \| EDS \| PROCHECK \| RECOORD \| WHAT_CHECK

Access by UniProt ID/Accession number
	ICI2_HORVU \| P01053
		Comparative Protein Structure Models	:	ModBase
		Genomic Information	:	Ensembl
		Protein-protein Interaction	:	DIP
		Sequence, Family and Domain Information	:	InterPro \| Pfam \| SMART \| UniProtKB/SwissProt

Access by Enzyme Classificator (EC Number)
	(no 'Enzyme Classificator' available)
		General Enzyme Information	:	BRENDA \| EC-PDB \| Enzyme \| IntEnz
		Pathway	:	KEGG \| MetaCyc

Access by Disease Identifier (MIM ID)
	(no 'MIM ID' available)
		Disease Information	:	OMIM

Access by GenAge ID
	(no 'GenAge ID' available)
		Age Related Information	:	GenAge

Analysis Tools

Access by PDB/NDB ID
		Domain Information	:	XDom
		Interatomic Contacts of Structural Units	:	CSU
		Ligand-protein Contacts	:	LPC
		Protein Cavities	:	castP
		Sequence and Secondary Structure	:	PDBCartoon
		Structure Alignment	:	STRAP(Java WebStart application, automatic local installation, requires Java; full application with system access!)
		Structure and Sequence Browser	:	STING

Access by UniProt ID/Accession number
	ICI2_HORVU \| P01053
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)

Description