3U54	Ligase	date	Oct 11, 2011
title	Crystal Structure (Type-1) Of Saicar Synthetase From Pyrococ Horikoshii Ot3
authors	K.Manjunath, S.P.Kanaujia, S.Kanagaraj, J.Jeyakanthan, K.Sekar
compound		source
Molecule: Phosphoribosylaminoimidazole-Succinocarboxamide S Chain: A, B Synonym: Saicar Synthetase Ec: 6.3.2.6 Engineered: Yes		Organism_scientific: Pyrococcus Horikoshii Organism_taxid: 70601 Strain: Ot3 Gene: Ph0239, Purc Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21-Codonplus (De3)-Ril Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet11a
symmetry	Space Group: H 3	R_factor 0.235 R_Free 0.286
crystal cell	length a length b length c angle alpha angle beta angle gamma 95.420 95.420 148.631 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.35 Å
ligand	ACT, BU1, CD, MSE, SO4	enzyme	Ligase E.C.6.3.2.6 BRENDA
Gene Ontology	Chain Function Process Component A, B
Primary reference	Structure of SAICAR synthetase from Pyrococcus horikoshii OT3: insights into thermal stability., Manjunath K, Kanaujia SP, Kanagaraj S, Jeyakanthan J, Sekar K, Int J Biol Macromol. 2013 Feb;53:7-19. doi: 10.1016/j.ijbiomac.2012.10.028. Epub , 2012 Nov 5. PMID:23137517

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (82 Kb) [Save to disk] Biological Unit Coordinates (3u54.pdb1.gz) 220 Kb Biological Unit Coordinates (3u54.pdb2.gz) 75 Kb Biological Unit Coordinates (3u54.pdb3.gz) 75 Kb LPC: Ligand-Protein Contacts for 3U54 CSU: Contacts of Structural Units for 3U54 Structure Factors (1155 Kb) Retrieve 3U54 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3U54 from S2C, [Save to disk] Re-refined 3u54 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3U54 in 3D

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Visual 3D analysis of 3U54

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 3U54, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3u54_B] [3u54] [3u54_A] SWISS-PROT database: Domain organization of by SWISSPFAM

Other resources with information on 3U54

Community annotation for 3U54 at PDBWiki (http://pdbwiki.org)

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