2IBS	Transferase Dna	date	Sep 12, 2006
title	Crystal Structure Of The Adenine-Specific Dna Methyltransfer Complexed With The Cofactor Analog Aeta And A 10 Bp Dna Con Aminopurine At The Target Position
authors	G.Pljevaljcic, T.Lenz, A.J.Scheidig, E.Weinhold
compound		source
Molecule: 5'-D(Gptptpcpgp(2pr)Ptpgptpc)-3' Chain: B, E Engineered: Yes		Synthetic: Yes Other_details: Solid-Phase Dna Synthesis Using Commercially Available Phosphoramidites;
Molecule: 5'-D(Gpapcpaptpcpgp(6ma)Papc)-3' Chain: C, F Engineered: Yes		Synthetic: Yes Other_details: Solid-Phase Dna Synthesis Using Commercially Available Phosphoramidites;
Molecule: Modification Methylase Taqi Chain: A, D Synonym: Adenine-Specific Methyltransferase Taqi, M.Taqi Ec: 2.1.1.72 Engineered: Yes		Organism_scientific: Thermus Aquaticus Organism_taxid: 271 Strain: Yt1 Gene: Taqim Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Er2267 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pa1mtaq-A49a
symmetry	Space Group: P 1 21 1	R_factor 0.195 R_Free 0.252
crystal cell	length a length b length c angle alpha angle beta angle gamma 59.530 69.160 114.640 90.00 92.18 90.00
method	X-Ray Diffraction	resolution	2.40 Å
ligand	2PR, 6MA, NEA	enzyme	Transferase E.C.2.1.1.72 BRENDA
Gene Ontology	Chain Function Process Component A, D site-specific DNA-methyltran...
Primary reference	2-Aminopurine Flipped into the Active Site of the Adenine-Specific DNA Methyltransferase M.TaqI: Crystal Structures and Time-Resolved Fluorescence., Lenz T, Bonnist EY, Pljevaljcic G, Neely RK, Dryden DT, Scheidig AJ, Jones AC, Weinhold E, J Am Chem Soc. 2007 May 16;129(19):6240-6248. Epub 2007 Apr 25. PMID:17455934

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (165 Kb) [Save to disk] Biological Unit Coordinates (2ibs.pdb1.gz) 81 Kb Biological Unit Coordinates (2ibs.pdb2.gz) 81 Kb LPC: Ligand-Protein Contacts for 2IBS CSU: Contacts of Structural Units for 2IBS Likely Quarternary Molecular Structure file(s) for 2IBS Structure Factors (290 Kb) Retrieve 2IBS in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2IBS from S2C, [Save to disk] Re-refined 2ibs structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2IBS 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 2IBS

Cartoon representation from PDB Cartoon 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 Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 2IBS, from MSDmotif at EBI Fold representative 2ibs from FSSP and Dali (Families of Structurally Similar Proteins)

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2ibs] [2ibs_F] [2ibs_D] [2ibs_E] [2ibs_A] [2ibs_B] [2ibs_C] SWISS-PROT database: [P14385] Domain organization of [MTTA_THEAQ] by SWISSPFAM

Other resources with information on 2IBS

Community annotation for 2IBS at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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