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Title :   THE 1.6 A CRYSTAL STRUCTURE OF VIBRIO CHOLERAE EXTRACELLULAR ENDONUCLEASE I

Authors :   B. Altermark, A. O. Smalaas, N. P. Willassen, R. Helland

Date :   28 Feb 06 (Deposition) - 31 Oct 06 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.60

Chains :   Asym./Biol. Unit : A

Keywords :   Vibrio Cholerae Nuclease; Enda; Endonuclease I; Buried Chloride, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   B. Altermark, A. O. Smalas, N. P. Willassen, R. Helland
The Structure Of Vibrio Cholerae Extracellular Endonuclease I Reveals The Presence Of A Buried Chloride Ion.
Acta Crystallogr. , Sect. D V. 62 1387 2006
PubMed-ID: 17057343 | Reference-DOI: 10.1107/S0907444906034196
(for further references see the PDB file header)

Molecule 1 - ENDONUCLEASE I
	Chains	:	A
	EC Number	:	3.1.21.1
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PBAD-GIII
	Expression System Strain	:	TOP10
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Gene	:	ENDA
	Organism Scientific	:	VIBRIO CHOLERAE
	Organism Taxid	:	666

		1
Asymmetric/Biological Unit	:	A

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (1, 1)

No.	Name	Count	Type	Full Name
1	CL	1	Ligand/Ion	CHLORIDE ION

Asymmetric Unit (1, 1)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	SER A:41 , TYR A:43 , CYS A:44 , ILE A:123	BINDING SITE FOR RESIDUE CL A 300

Asymmetric/Biological Unit

No.	Residues
1	A:44	-	A:149
2	A:46	-	A:62
3	A:93	-	A:102
4	A:207	-	A:228

(no "Cis Peptide Bond" information available for 2G7E)

(no "SAP(SNP)/Variant" information available for 2G7E)

(no "PROSITE Motif" information available for 2G7E)

(no "Exon" information available for 2G7E)

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)
	SAPs(SNPs)	PROSITE motifs	Exons
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Chain A from PDB  Type:PROTEIN  Length:207
 aligned with Q2XSK9_VIBCL | Q2XSK9 from UniProtKB/TrEMBL  Length:231

    Alignment length:207
                                    34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       
         Q2XSK9_VIBCL    25 FSHAKNEAVKIYRDHPVSFYCGCEIRWQGKKGIPDLESCGYQVRKNENRASRIEWEHVVPAWQFGHQLQCWQQGGRKNCTRTSPEFNQMEADLHNLTPAIGEVNGNRSNFSFSQWNGIDGVTYGQCEMQVNFKERTAMPPERARGAIARTYLYMSEQYGLRLSKAQNQLMQAWNNQYPVSEWECVRDQKIEKVQGNSNRFVREQCPN 231
               SCOP domains d2g7ea_ A: automated matches                                                                                                                                                                                    SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhh........eeeee..eeeeehhhhh.....hhhhhh.eeeee..hhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhh...eeeeehhhhhhhh..ee........eee..eeeeee....eee.hhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhh..hhhhhh.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2g7e A  24 FSHAKNEAVKIYRDHPVSFYCGCEIRWQGKKGIPDLESCGYQVRKNENRASRIEWEHVVPAWQFGHQLQCWQQGGRKNCTRTSPEFNQMEADLHNLTPAIGEVNGNRSNFSFSQWNGIDGVTYGQCEMQVNFKERTAMPPERARGAIARTYLYMSEQYGLRLSKAQNQLMQAWNNQYPVSEWECVRDQKIEKVQGNSNRFVREQCPN 230
                                    33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
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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 '\|'

Asymmetric/Biological Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: Alpha and beta proteins (a+b) (23004)

Fold: His-Me finger endonucleases (64)

Superfamily: His-Me finger endonucleases (64)

Family: Endonuclease I (7)

Protein domain: automated matches (5)

Vibrio cholerae [TaxId: 666] (3)

d2g7ea_

(no "CATH Domain" information available for 2G7E)

(no "Pfam Domain" information available for 2G7E)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A (Q2XSK9_VIBCL | Q2XSK9)

molecular function
	GO:0004519	endonuclease activity	Catalysis of the hydrolysis of ester linkages within nucleic acids by creating internal breaks.
	GO:0016787	hydrolase activity	Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
	GO:0004518	nuclease activity	Catalysis of the hydrolysis of ester linkages within nucleic acids.
biological process
	GO:0090305	nucleic acid phosphodiester bond hydrolysis	The nucleic acid metabolic process in which the phosphodiester bonds between nucleotides are cleaved by hydrolysis.

Asymmetric/Biological Unit
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	Q2XSK9_VIBCL \| Q2XSK9	:	2g7f

2g7f	CRYSTAL STRUCTURE OF VIBRIO ENDONUCLEASE I AT LOW PH THE RESIDUE NUMBERING FOLLOWS THAT OF VIBRIO VULNIFICUS ENDONUCLEASE (PDB 1OUO)

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (1, 1)

Sites (1, 1)

SS Bonds (4, 4)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

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