3K74	Oxidoreductase	date	Oct 12, 2009
title	Disruption Of Protein Dynamics By An Allosteric Effector Ant
authors	D.Oyen, V.Srinivasan, J.Steyaert, J.Barlow
compound		source
Molecule: Dihydrofolate Reductase Chain: A Ec: 1.5.1.3 Engineered: Yes		Organism_scientific: Escherichia Coli K-12 Organism_taxid: 83333 Strain: Rt500 Gene: B0048, Dhfr, Fola, Jw0047, Tmra Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet22
Molecule: Nanobody Chain: B Engineered: Yes		Organism_scientific: Lama Glama Organism_taxid: 9844 Gene: Lama Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Wk6 Expression_system_vector_type: Plasmid Expression_system_plasmid: Phen6
symmetry	Space Group: P 21 21 21	R_factor 0.196 R_Free 0.240
crystal cell	length a length b length c angle alpha angle beta angle gamma 55.300 62.322 102.848 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.95 Å
ligand		enzyme	Oxidoreductase E.C.1.5.1.3 BRENDA
Gene Ontology	Chain Function Process Component A
Primary reference	Constraining enzyme conformational change by an antibody leads to hyperbolic inhibition., Oyen D, Srinivasan V, Steyaert J, Barlow JN, J Mol Biol. 2011 Mar 18;407(1):138-48. Epub 2011 Jan 14. PMID:21238460

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (51 Kb) [Save to disk] Biological Unit Coordinates (3k74.pdb1.gz) 46 Kb CSU: Contacts of Structural Units for 3K74 Structure Factors (611 Kb) Retrieve 3K74 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3K74 from S2C, [Save to disk] Re-refined 3k74 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3K74 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 3K74

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 3D motif for 3K74, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3k74_B] [3k74] [3k74_A] SWISS-PROT database: Domain organization of by SWISSPFAM Domain found in 3K74: [IGv ] by SMART

Other resources with information on 3K74

Community annotation for 3K74 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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