1XPG	Transferase	date	Oct 08, 2004
title	Crystal Structure Of T. Maritima Cobalamin-Independent Methi Synthase Complexed With Zn2+ And Methyltetrahydrofolate
authors	R.Pejchal, M.L.Ludwig
compound		source
Molecule: 5-Methyltetrahydropteroyltriglutamate--Homocystei Methyltransferase; Chain: A, B Synonym: Methionine Synthase, Vitamin-B12 Independent Isozy Cobalamin-Independent Methionine Synthase; Ec: 2.1.1.14 Engineered: Yes		Organism_scientific: Thermotoga Maritima Organism_taxid: 2336 Gene: Mete Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21(De3)Star Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet151d-Topo
symmetry	Space Group: P 21 21 2	R_factor 0.196 R_Free 0.248
crystal cell	length a length b length c angle alpha angle beta angle gamma 163.948 159.303 64.449 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.59 Å
ligand	C2F, MRY, MSE, SO4, ZN	enzyme	Transferase E.C.2.1.1.14 BRENDA
related structures	by homologous chain: 1XR2
Gene Ontology	Chain Function Process Component A, B
Primary reference	Cobalamin-Independent Methionine Synthase (MetE): A Face-to-Face Double Barrel That Evolved by Gene Duplication., Pejchal R, Ludwig ML, PLoS Biol 2005 Feb;3(2):e31. Epub 2004 Dec 28. PMID:15630480

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (250 Kb) [Save to disk] Biological Unit Coordinates (1xpg.pdb1.gz) 123 Kb Biological Unit Coordinates (1xpg.pdb2.gz) 123 Kb LPC: Ligand-Protein Contacts for 1XPG CSU: Contacts of Structural Units for 1XPG Likely Quarternary Molecular Structure file(s) for 1XPG Structure Factors (457 Kb) Retrieve 1XPG in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1XPG from S2C, [Save to disk] Re-refined 1xpg structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1XPG 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 1XPG

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 1XPG, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1xpg_A] [1xpg_B] [1xpg] SWISS-PROT database: [Q9X112] Domain organization of [METE_THEMA] by SWISSPFAM

Other resources with information on 1XPG

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

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