1MK0 - JenaLib

Title :   CATALYTIC DOMAIN OF INTRON ENDONUCLEASE I-TEVI, E75A MUTANT

Authors :   P. Van Roey, L. Meehan, J. C. Kowalski, M. Belfort, V. Derbyshire

Date :   28 Aug 02 (Deposition) - 30 Oct 02 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.60

Chains :   Asym./Biol. Unit : A

Keywords :   Alpha/Beta Fold; Catalytic Domain; Dna-Binding Surface, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   P. Van Roey, L. Meehan, J. C. Kowalski, M. Belfort, V. Derbyshire
Catalytic Domain Structure And Hypothesis For Function Of Giy-Yig Intron Endonuclease I-Tevi.
Nat. Struct. Biol. V. 9 806 2002
PubMed-ID: 12379841
(for further references see the PDB file header)

Compounds

Molecule 1 - INTRON-ASSOCIATED ENDONUCLEASE 1
	Chains	:	A
	EC Number	:	3.1.-.-
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Fragment	:	CATALYTIC DOMAIN (RESIDUES 1 TO 97)
	Mutation	:	YES
	Organism Scientific	:	ENTEROBACTERIA PHAGE T4
	Organism Taxid	:	10665
	Synonym	:	I-TEVI, IRF PROTEIN

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 2)

Sites (2, 2)

Asymmetric Unit (2, 2)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	TYR A:6 , TYR A:17 , GLY A:19 , SER A:20 , ARG A:27 , HIS A:31 , ALA A:94 , THR A:95 , HOH A:403 , HOH A:404 , HOH A:419 , HOH A:422 , HOH A:484 , HOH A:495 , HOH A:511 , HOH A:529	BINDING SITE FOR RESIDUE CIT A 300
2	AC2	SOFTWARE	ASP A:34 , LYS A:37 , CYS A:39 , LEU A:61 , TRP A:78 , HOH A:420	BINDING SITE FOR RESIDUE BME A 401

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (1, 1)

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

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Chain A from PDB  Type:PROTEIN  Length:97
 aligned with TEV1_BPT4 | P13299 from UniProtKB/Swiss-Prot  Length:245

    Alignment length:97
                                    10        20        30        40        50        60        70        80        90       
             TEV1_BPT4    1 MKSGIYQIKNTLNNKVYVGSAKDFEKRWKRHFKDLEKGCHSSIKLQRSFNKHGNVFECSILEEIPYEKDLIIERENFWIKELNSKINGYNIADATFG 97
               SCOP domains d1mk0a_ A: Homing endonuclease I-TevI                                                             SCOP domains
               CATH domains 1mk0A00 A:1-97 GIY-YIG endonuclease                                                               CATH domains
               Pfam domains -GIY-YIG-1mk0A01 A:2-90                                                                   ------- Pfam domains
         Sec.struct. author ...eeeeeee.....eeeeee.hhhhhhhhhhhhhhhh...hhhhhhhhhhhh..eeeeeeee...hhhhhhhhhhhhhhhh............... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE GIY_YIG  PDB: A:1-88 UniProt: 1-88                                                      --------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------- Transcript
                  1mk0 A  1 MKSGIYQIKNTLNNKVYVGSAKDFEKRWKRHFKDLEKGCHSSIKLQRSFNKHGNVFECSILEEIPYEKDLIIERANFWIKELNSKINGYNIADATFG 97
                                    10        20        30        40        50        60        70        80        90

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Classification and Annotation

SCOP Domains (1, 1)

CATH Domains (1, 1)

Pfam Domains (1, 1)

Gene Ontology (6, 6)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A (TEV1_BPT4 | P13299)

molecular function
	GO:0003677	DNA binding	Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
	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:0006314	intron homing	Lateral transfer of an intron to a homologous allele that lacks the intron, mediated by a site-specific endonuclease encoded within the mobile intron.
	GO:0090305	nucleic acid phosphodiester bond hydrolysis	The nucleic acid metabolic process in which the phosphodiester bonds between nucleotides are cleaved by hydrolysis.

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