1KMS	Oxidoreductase	date	Dec 17, 2001
title	Human Dihydrofolate Reductase Complexed With Nadph And 6-([5 Quinolylamino]Methyl)-2,4-Diamino-5-Methylpyrido[2,3-D]Pyri (Sri-9439), A Lipophilic Antifolate
authors	A.E.Klon, A.Heroux, L.J.Ross, V.Pathak, C.A.Johnson, J.R.Piper, D.
compound		source
Molecule: Dihydrofolate Reductase Chain: A Synonym: Dhfr Ec: 1.5.1.3 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_cellular_location: Cytoplasm Expression_system_vector_type: Plasmid Expression_system_vector: Pet11a Expression_system_plasmid: Pdfr
symmetry	Space Group: P 21 21 21	R_factor R_Free
crystal cell	length a length b length c angle alpha angle beta angle gamma 41.467 55.275 82.799 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.09 Å
ligand	LIH, NDP, SO4 BindingDB	enzyme	Oxidoreductase E.C.1.5.1.3 BRENDA
related structures	by homologous chain: 1KMV, 8DFR
Gene Ontology	Chain Function Process Component A
Primary reference	Atomic structures of human dihydrofolate reductase complexed with NADPH and two lipophilic antifolates at 1.09 a and 1.05 a resolution., Klon AE, Heroux A, Ross LJ, Pathak V, Johnson CA, Piper JR, Borhani DW, J Mol Biol 2002 Jul 12;320(3):677-93. PMID:12096917

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (90 Kb) [Save to disk] Biological Unit Coordinates (1kms.pdb1.gz) 84 Kb LPC: Ligand-Protein Contacts for 1KMS CSU: Contacts of Structural Units for 1KMS Likely Quarternary Molecular Structure file(s) for 1KMS Structure Factors (616 Kb) Retrieve 1KMS in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1KMS from S2C, [Save to disk] Re-refined 1kms structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1KMS 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 1KMS

Ramachandran plot from PDBSum

Structure-derived information

Conformational Epitope Prediction for 1KMS from the CEP Server. Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1KMS, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1kmsa_, region A [Jmol] [rasmolscript] [script source] 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: [1kms] [1kms_A] SWISS-PROT database: [P00374] Domain organization of [DYR_HUMAN] by SWISSPFAM

Other resources with information on 1KMS

Community annotation for 1KMS at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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