ISDA

Deposition Date 2003-05-23

Release Date 2003-08-08

Last Version Date 2023-12-13

Entry Detail

PDB ID:

1OH5

Keywords:

DNA BINDING

Title:

THE CRYSTAL STRUCTURE OF E. COLI MUTS BINDING TO DNA WITH A C:A MISMATCH

Biological Source:

Source Organism:

ESCHERICHIA COLI (Taxon ID: 562)
synthetic construct (Taxon ID: 32630)

Host Organism:

ESCHERICHIA COLI

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.90 Å

R-Value Free:

0.29

R-Value Work:

0.22

R-Value Observed:

0.22

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:DNA MISMATCH REPAIR PROTEIN MUTS
Gene (Uniprot):mutS
Chain IDs:A, B
Chain Length:800
Number of Molecules:2
Biological Source:ESCHERICHIA COLI

UniProt ID:P23909 Pfam ID:PF01624, PF05188, PF05192, PF05190, PF00488

Polymer Type:polydeoxyribonucleotide
Molecule:5'-D(*AP*GP*CP*TP*GP*CP*CP*AP*CP*GP *CP*AP*CP*CP*AP*GP*TP*GP*TP*CP*AP*GP*CP*GP*TP *CP*CP*TP*AP*T)-3'
Chain IDs:C (auth: E)
Chain Length:30
Number of Molecules:1
Biological Source:synthetic construct

Polymer Type:polydeoxyribonucleotide
Molecule:5'-D(*AP*TP*AP*GP*GP*AP*CP*GP*CP*TP *GP*AP*CP*AP*CP*TP*GP*GP*TP*GP*CP*AP*TP*GP*GP *CP*AP*GP*CP*T)-3'
Chain IDs:D (auth: F)
Chain Length:30
Number of Molecules:1
Biological Source:synthetic construct

Ligand Molecules

ADP

Primary Citation

Structures of E. Coli DNA Mismatch Repair Enzyme Muts in Complex with Different Mismatches: A Common Recognition Mode for Diverse Substrates

Natrajan, G, Lamers, M.H, Enzlin, J.H, Winterwerp, H.H.K, Perrakis, A, Sixma, T.K, Lamers, M.H, Perrakis, A, Enzlin, J.H, Winterwerp, H.H, De Wind, N, Sixma, T.K.Show

Nucleic Acids Res. 31 4814 ? (2003)

PMID: 12907723 DOI: 10.1093/NAR/GKG677

Abstact

We have refined a series of isomorphous crystal structures of the Escherichia coli DNA mismatch repair enzyme MutS in complex with G:T, A:A, C:A and G:G mismatches and also with a single unpaired thymidine. In all these structures, the DNA is kinked by approximately 60 degrees upon protein binding. Two residues widely conserved in the MutS family are involved in mismatch recognition. The phenylalanine, Phe 36, is seen stacking on one of the mismatched bases. The same base is also seen forming a hydrogen bond to the glutamate Glu 38. This hydrogen bond involves the N7 if the base stacking on Phe 36 is a purine and the N3 if it is a pyrimidine (thymine). Thus, MutS uses a common binding mode to recognize a wide range of mismatches.

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Protein

Chemical

Disease

Primary Citation of related structures