1RX4 Oxidoreductase date Sep 19, 1996
title Dihydrofolate Reductase (E.C. Complexed With 5,10- Dideazatetrahydrofolate And 2'-Monophosphoadenosine 5'- Diphosphoribose
authors M.R.Sawaya
compound source
Molecule: Dihydrofolate Reductase
Chain: A
Synonym: Dhfr
Engineered: Yes
Organism_scientific: Escherichia Coli
Organism_taxid: 562
Strain: Rt500
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_plasmid: Prwa-1
symmetry Space Group: P 21 21 21
R_factor 0.175 R_Free NULL
length a length b length c angle alpha angle beta angle gamma
34.923 45.075 100.879 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.20 Å
ligand BME, DDF, NAP enzyme Oxidoreductase E.C. BRENDA
related structures by homologous chain: 1DDS, 1RX3

Primary referenceLoop and subdomain movements in the mechanism of Escherichia coli dihydrofolate reductase: crystallographic evidence., Sawaya MR, Kraut J, Biochemistry 1997 Jan 21;36(3):586-603. PMID:9012674
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (34 Kb) [Save to disk]
  • Biological Unit Coordinates (1rx4.pdb1.gz) 30 Kb
  • LPC: Ligand-Protein Contacts for 1RX4
  • CSU: Contacts of Structural Units for 1RX4
  • Likely Quarternary Molecular Structure file(s) for 1RX4
  • Structure Factors (56 Kb)
  • Retrieve 1RX4 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1RX4 from S2C, [Save to disk]
  • Re-refined 1rx4 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1RX4 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 1RX4
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 1RX4, from MSDmotif at EBI
  • Genome occurence of 1RX4's fold from GeneCensus
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1rx4__, region [Jmol] [rasmolscript] [script source]
  • Fold representative 1rx4 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: [1rx4_A] [1rx4]
  • SWISS-PROT database: [P0ABQ4]
  • Domain organization of [DYR_ECOLI] by SWISSPFAM
  • Other resources with information on 1RX4
  • Community annotation for 1RX4 at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

  • You may enter another PDB ID code
    Go [Back], to the [PDB Lite page], to the [OCA Search page] or to the [PDB Home page]
    OCA© by Jaime Prilusky, 1996-2014
    Bioinformatics Unit
    Weizmann Institute of Science