1RG9	Transferase	date	Nov 11, 2003
title	S-Adenosylmethionine Synthetase Complexed With Sam And Ppnp
authors	J.Komoto, T.Yamada, Y.Takata, G.D.Markham, F.Takusagawa
compound		source
Molecule: S-Adenosylmethionine Synthetase Chain: A, B, C, D Synonym: Methionine Adenosyltransferase, Adomet Synthetase, Ec: 2.5.1.6 Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Gene: Metk, Metx, B2942, C3528, Z4287, Ecs3818, Sf2933, S31 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: P 21 21 21	R_factor 0.211 R_Free 0.241
crystal cell	length a length b length c angle alpha angle beta angle gamma 225.820 69.130 118.230 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand	K, MG, PPK, SAM	enzyme	Transferase E.C.2.5.1.6 BRENDA
related structures	by homologous chain: 1P7L
Gene Ontology	Chain Function Process Component A, D, C, B
Primary reference	Crystal structure of the S-adenosylmethionine synthetase ternary complex: a novel catalytic mechanism of S-adenosylmethionine synthesis from ATP and Met., Komoto J, Yamada T, Takata Y, Markham GD, Takusagawa F, Biochemistry 2004 Feb 24;43(7):1821-31. PMID:14967023

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (241 Kb) [Save to disk] Biological Unit Coordinates (1rg9.pdb1.gz) 235 Kb LPC: Ligand-Protein Contacts for 1RG9 CSU: Contacts of Structural Units for 1RG9 Likely Quarternary Molecular Structure file(s) for 1RG9 Structure Factors (484 Kb) Retrieve 1RG9 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1RG9 from S2C, [Save to disk] Re-refined 1rg9 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1RG9 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 1RG9

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 1RG9, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1rg9a1, region A:1-102 [Jmol] [rasmolscript] [script source]     - Domain d1rg9a2, region A:103-231 [Jmol] [rasmolscript] [script source]     - Domain d1rg9a3, region A:232-383 [Jmol] [rasmolscript] [script source]     - Domain d1rg9b1, region B:1-102 [Jmol] [rasmolscript] [script source]     - Domain d1rg9b2, region B:103-231 [Jmol] [rasmolscript] [script source]     - Domain d1rg9b3, region B:232-383 [Jmol] [rasmolscript] [script source]     - Domain d1rg9c1, region C:1-102 [Jmol] [rasmolscript] [script source]     - Domain d1rg9c2, region C:103-231 [Jmol] [rasmolscript] [script source]     - Domain d1rg9c3, region C:232-383 [Jmol] [rasmolscript] [script source]     - Domain d1rg9d1, region D:1-102 [Jmol] [rasmolscript] [script source]     - Domain d1rg9d2, region D:103-231 [Jmol] [rasmolscript] [script source]     - Domain d1rg9d3, region D:232-383 [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: [1rg9_C] [1rg9] [1rg9_A] [1rg9_B] [1rg9_D] SWISS-PROT database: [P0A817] Domain organization of [METK_ECOLI] by SWISSPFAM

Other resources with information on 1RG9

Community annotation for 1RG9 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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