1QNT Dna Repair date Oct 20, 1999
title X-Ray Structure Of Human O6alkylguanine-Dna Alkyltransferase
authors J.E.A.Wibley, P.C.E.Moody
compound source
Molecule: Methylated-Dna--Protein-Cysteine Methyltransferase;
Chain: A
Synonym: 6-O-Methylguanine-Dna Methyltransferase
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: Jm109
Expression_system_plasmid: Pqe30
symmetry Space Group: P 31 2 1
R_factor 0.198 R_Free 0.221
length a length b length c angle alpha angle beta angle gamma
71.877 71.877 72.578 90.00 90.00 120.00
method X-Ray Diffractionresolution 1.9 Å
enzyme Transferase E.C. BRENDA
related structures by homologous chain: 1EH6

Primary referenceCrystal structure of the human O(6)-alkylguanine-DNA alkyltransferase., Wibley JE, Pegg AE, Moody PC, Nucleic Acids Res 2000 Jan 15;28(2):393-401. PMID:10606635
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (32 Kb) [Save to disk]
  • Biological Unit Coordinates (1qnt.pdb1.gz) 29 Kb
  • CSU: Contacts of Structural Units for 1QNT
  • Likely Quarternary Molecular Structure file(s) for 1QNT
  • Retrieve 1QNT in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1QNT from S2C, [Save to disk]
  • View 1QNT in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 1QNT
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 1QNT, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1qnta2, region A:6-91 [Jmol] [rasmolscript] [script source]
        - Domain d1qnta1, region A:92-176 [Jmol] [rasmolscript] [script source]
  • Fold representative 1qnt from FSSP and Dali (Families of Structurally Similar Proteins)
  • Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH
  • Summaries and structural analyses of PDB data files from PDBSum
  • Identification of Protein Pockets & Cavities at CASTp
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1qnt] [1qnt_A]
  • SWISS-PROT database: [P16455]
  • Domain organization of [MGMT_HUMAN] by SWISSPFAM
  • Other resources with information on 1QNT
  • Community annotation for 1QNT at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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