1EQM	Transferase	date	Apr 05, 2000
title	Crystal Structure Of Binary Complex Of 6-Hydroxymethyl-7,8- Dihydropterin Pyrophosphokinase With Adenosine-5'-Diphospha
authors	B.Xiao, J.Blaszczyk, X.Ji
compound		source
Molecule: 6-Hydroxymethyl-7,8-Dihydropterin Pyrophosphokina Chain: A Synonym: Hppk Ec: 2.7.6.3 Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet17b
symmetry	Space Group: C 1 2 1	R_factor R_Free
crystal cell	length a length b length c angle alpha angle beta angle gamma 79.140 52.800 36.640 90.00 103.43 90.00
method	X-Ray Diffraction	resolution	1.50 Å
ligand	ADP, MG, PO4	enzyme	Transferase E.C.2.7.6.3 BRENDA
related structures	by homologous chain: 1HKA, 1KBR
Gene Ontology	Chain Function Process Component A
Primary reference	Unusual conformational changes in 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase as revealed by X-ray crystallography and NMR., Xiao B, Shi G, Gao J, Blaszczyk J, Liu Q, Ji X, Yan H, J Biol Chem 2001 Oct 26;276(43):40274-81. PMID:11546767

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (37 Kb) [Save to disk] Biological Unit Coordinates (1eqm.pdb1.gz) 33 Kb LPC: Ligand-Protein Contacts for 1EQM CSU: Contacts of Structural Units for 1EQM Likely Quarternary Molecular Structure file(s) for 1EQM Structure Factors (392 Kb) Retrieve 1EQM in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1EQM from S2C, [Save to disk] Re-refined 1eqm structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1EQM 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 1EQM

Ramachandran plot from PDBSum

Structure-derived information

Conformational Epitope Prediction for 1EQM from the CEP Server. Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1EQM, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1eqma_, 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: [1eqm_A] [1eqm] SWISS-PROT database: [P26281] Domain organization of [HPPK_ECOLI] by SWISSPFAM

Other resources with information on 1EQM

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

Movements, Movies and Images

Domain movements in 1EQM from the Database of Macromolecular Movements. Images from IMB Jena Image Library of Biological Macromolecules.

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