1KNK	Metal Binding Protein	date	Dec 18, 2001
title	Crystal Structure Of 2-C-Methyl-D-Erythritol 2,4-Cyclodiphos Synthase (Ispf) From E. Coli Involved In Mevalonate-Indepen Isoprenoid Biosynthesis
authors	S.B.Richard, J.L.Ferrer, M.E.Bowman, A.M.Lillo, C.N.Tetzlaff, D.E J.P.Noel
compound		source
Molecule: 2c-Methyl-D-Erythritol 2,4-Cyclodiphosphate Synth Chain: A Synonym: Mecps Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Gene: Ispf Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Phis8
symmetry	Space Group: I 21 3	R_factor 0.232 R_Free 0.249
crystal cell	length a length b length c angle alpha angle beta angle gamma 145.630 145.630 145.630 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.80 Å
ligand	MN	enzyme
related structures	by homologous chain: 1U3L, 1U40
Gene Ontology	Chain Function Process Component A
Primary reference	Structure and mechanism of 2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase. An enzyme in the mevalonate-independent isoprenoid biosynthetic pathway., Richard SB, Ferrer JL, Bowman ME, Lillo AM, Tetzlaff CN, Cane DE, Noel JP, J Biol Chem 2002 Mar 8;277(10):8667-72. PMID:11786530

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (29 Kb) [Save to disk] Biological Unit Coordinates (1knk.pdb1.gz) 70 Kb LPC: Ligand-Protein Contacts for 1KNK CSU: Contacts of Structural Units for 1KNK Likely Quarternary Molecular Structure file(s) for 1KNK Structure Factors (121 Kb) Retrieve 1KNK in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1KNK from S2C, [Save to disk] Re-refined 1knk structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1KNK 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 1KNK

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 1KNK, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1knka_, 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: [1knk] [1knk_A] SWISS-PROT database: [P62617] Domain organization of [ISPF_ECOLI] by SWISSPFAM

Other resources with information on 1KNK

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

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