1DDS Oxido-Reductase date Jun 29, 1995
title Molecule: Dihydrofolate Reductase (E.C. Complexed With Methotrexate
authors H.P.Yennawar, G.K.Farber
compound source
Molecule: Dihydrofolate Reductase
Chain: A, B
Engineered: Yes
Organism_scientific: Escherichia Coli
Organism_taxid: 562
Expression_system_strain: B
symmetry Space Group: P 61
R_factor 0.177 R_Free 0.200
length a length b length c angle alpha angle beta angle gamma
93.181 93.185 73.886 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.20 Å
ligand CA, CL, MTX BindingDB enzyme Oxidoreductase E.C. BRENDA
related structures by homologous chain: 1RB3, 1RX4
A, B

Primary referenceThe effect of denaturants on protein structure., Dunbar J, Yennawar HP, Banerjee S, Luo J, Farber GK, Protein Sci. 1997 Aug;6(8):1727-33. PMID:9260285
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (57 Kb) [Save to disk]
  • Biological Unit Coordinates (1dds.pdb1.gz) 53 Kb
  • LPC: Ligand-Protein Contacts for 1DDS
  • CSU: Contacts of Structural Units for 1DDS
  • Likely Quarternary Molecular Structure file(s) for 1DDS
  • Structure Factors (71 Kb)
  • Retrieve 1DDS in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1DDS from S2C, [Save to disk]
  • Re-refined 1dds structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1DDS 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 1DDS
  • 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 1DDS, from MSDmotif at EBI
  • Genome occurence of 1DDS's fold from GeneCensus
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1ddsa_, region A [Jmol] [rasmolscript] [script source]
        - Domain d1ddsb_, region B [Jmol] [rasmolscript] [script source]
  • Fold representative 1dds 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: [1dds] [1dds_B] [1dds_A]
  • SWISS-PROT database: [P0ABQ4]
  • Domain organization of [DYR_ECOLI] by SWISSPFAM
  • Other resources with information on 1DDS
  • Community annotation for 1DDS at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Domain movements in 1DDS from the Database of Macromolecular Movements.
  • Images from IMB Jena Image Library of Biological Macromolecules.

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