1LK5	Isomerase	date	Apr 24, 2002
title	Structure Of The D-Ribose-5-Phosphate Isomerase From Pyrococcus Horikoshii
authors	K.Ishikawa, I.Matsui, F.Payan, C.Cambillau, H.Ishida, Y.Kawarabayasi, H.Kikuchi, A.Roussel
compound		source
Molecule: D-Ribose-5-Phosphate Isomerase Chain: A, B, C, D Ec: 5.3.1.6 Engineered: Yes		Organism_scientific: Pyrococcus Horikoshii Organism_taxid: 53953 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet11a
symmetry	Space Group: P 21 21 21	R_factor 0.191 R_Free 0.215
crystal cell	length a length b length c angle alpha angle beta angle gamma 73.548 114.932 119.017 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.75 Å
ligand	CL, NA	enzyme	Isomerase E.C.5.3.1.6 BRENDA
related structures	by homologous chain: 1LK7
Gene Ontology	Chain Function Process Component A, D, C, B
Primary reference	A hyperthermostable D-ribose-5-phosphate isomerase from Pyrococcus horikoshii characterization and three-dimensional structure., Ishikawa K, Matsui I, Payan F, Cambillau C, Ishida H, Kawarabayasi Y, Kikuchi H, Roussel A, Structure (Camb) 2002 Jun;10(6):877-86. PMID:12057201

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (160 Kb) [Save to disk] Biological Unit Coordinates (1lk5.pdb1.gz) 155 Kb LPC: Ligand-Protein Contacts for 1LK5 CSU: Contacts of Structural Units for 1LK5 Likely Quarternary Molecular Structure file(s) for 1LK5 Structure Factors (567 Kb) Retrieve 1LK5 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1LK5 from S2C, [Save to disk] Re-refined 1lk5 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1LK5 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 1LK5

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 1LK5, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1lk5a1, region A:1-130,A:211-229 [Jmol] [rasmolscript] [script source]     - Domain d1lk5a2, region A:131-210 [Jmol] [rasmolscript] [script source]     - Domain d1lk5b1, region B:1-130,B:211-229 [Jmol] [rasmolscript] [script source]     - Domain d1lk5b2, region B:131-210 [Jmol] [rasmolscript] [script source]     - Domain d1lk5c1, region C:1-130,C:211-229 [Jmol] [rasmolscript] [script source]     - Domain d1lk5c2, region C:131-210 [Jmol] [rasmolscript] [script source]     - Domain d1lk5d1, region D:1-130,D:211-229 [Jmol] [rasmolscript] [script source]     - Domain d1lk5d2, region D:131-210 [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: [1lk5_D] [1lk5] [1lk5_C] [1lk5_A] [1lk5_B] SWISS-PROT database: [O50083] Domain organization of [RPIA_PYRHO] by SWISSPFAM

Other resources with information on 1LK5

Community annotation for 1LK5 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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