Macromolecule Content

• Total Structure Weight: 15332.55 
• Atom Count: 1079 
• Residue Count: 129 
• Unique protein chains: 1

1PPX

Solution Structure of the MutT Pyrophosphohydrolase Complexed with Mg(2+) and 8-oxo-dGMP, a Tightly-bound Product

• DOI: 10.2210/pdb1PPX/pdb
• BMRB: 5866

• Classification: HYDROLASE
• Organism(s): Escherichia coli (strain K12)
• Expression System: Escherichia coli


• Deposited: 2003-06-17 Released: 2003-08-26 
• Deposition Author(s): Massiah, M.A., Saraswat, V., Azurmendi, H.F., Mildvan, A.S.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: structures with the least restraint violations 

Literature

Solution structure and NH exchange studies of the MutT pyrophosphohydrolase complexed with Mg(2+) and 8-oxo-dGMP, a tightly bound product.

Massiah, M.A., Saraswat, V., Azurmendi, H.F., Mildvan, A.S.

(2003) Biochemistry 42: 10140-10154

• PubMed: 12939141 
• DOI: 10.1021/bi030105p
• Primary Citation of Related Structures:  
  1PUS, 1PUQ, 1PUN


• PubMed Abstract: 
  

To learn the structural basis for the unusually tight binding of 8-oxo-nucleotides to the MutT pyrophosphohydrolase of Escherichia coli (129 residues), the solution structure of the MutT-Mg(2+)-8-oxo-dGMP product complex (K(D) = 52 nM) was determined by standard 3-D heteronuclear NMR methods. Using 1746 NOEs (13.5 NOEs/residue) and 186 phi and psi values derived from backbone (15)N, Calpha, Halpha, and Cbeta chemical shifts, 20 converged structures were computed with NOE violations

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Related Citations: 

• Solution Structure of the MutT Enzyme, a Nucleoside Triphosphate Pyrophosphohydrolase
  Abeygunawardana, C.,Weber, D.J.,Gittis, A.G.,Frick, D.N.,Lin, J.,Miller, A.F.,Bessman, M.J.,Mildvan, A.S.
  (1995) Biochemistry 34: 14997
• NMR Studies of the Conformations and Location of Nucleotides Bound to the E.Coli MutT Enzyme
  Frick, D.N.,Weber, D.J.,Abeygunawardana, C.,Gittis, A.G.,J Bessman, M.,Mildvan, A.S.
  (1995) Biochemistry 34: 5577
• Solution Structure of the Quaternary Complex MutT-M(2+)-AMPCPP-M(2+) Complex and Mechanism of its Pyrophosphohydrolase Action
  Lin, J.,Abeygunawardana, C.,Frick, D.N.,J Bessman, M.,Mildvan, A.S.
  (1997) Biochemistry 36: 1199




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Organizational Affiliation: 

Department of Biological Chemistry, The Johns Hopkins School of Medicine, 725 North Wolfe Street, Baltimore, Maryland 21205-2185, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Mutator mutT protein	A	129	Escherichia coli (strain K12)	Mutation(s): 0  Gene Names: mutT EC: 3.6.1.55
Find proteins for P08337 (Escherichia coli (strain K12)) Go to UniProtKB:  P08337

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
MG	A	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N
8OG	A	8-OXO-2'-DEOXY-GUANOSINE-5'-MONOPHOSPHATE 8-OXO-7,8-DIHYDRO-2'-DEOXY-GUANOSINE-5'-MONOPHOSPHATE C10 H14 N5 O8 P AQIVLFLYHYFRKU-VPENINKCSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
8OG	Kd: 52 nM PDBBIND

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: structures with the least restraint violations 
• Olderado: 1PPX Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-06-17 
• Released Date: 2003-08-26 
• Deposition Author(s): Massiah, M.A., Saraswat, V., Azurmendi, H.F., Mildvan, A.S.

Revision History 

• Version 1.0: 2003-08-26
  Type: Initial release
• Version 1.1: 2008-04-29
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance