2I9K	Transferase Dna	date	Sep 05, 2006
title	Engineered Extrahelical Base Destabilization Enhances Sequen Discrimination Of Dna Methyltransferase M.Hhai
authors	B.Youngblood, F.K.Shieh, S.De Los Rios, J.J.Perona, N.O.Reich
compound		source
Molecule: 5'-D(Tgpaptpapgpcpgpcptpaptpc)-3' Chain: C, D Engineered: Yes		Synthetic: Yes
Molecule: Modification Methylase Hhai Chain: A Synonym: Cytosine-Specific Methyltransferase Hhai, M.Hhai Ec: 2.1.1.73 Engineered: Yes Mutation: Yes		Organism_scientific: Haemophilus Haemolyticus Organism_taxid: 726 Gene: Hhaim Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Er1727 Expression_system_vector_type: Plasmid Expression_system_plasmid: Phshw-5
symmetry	Space Group: H 3 2	R_factor 0.238 R_Free 0.262
crystal cell	length a length b length c angle alpha angle beta angle gamma 97.510 97.510 319.700 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.65 Å
ligand	SAH	enzyme	Transferase E.C.2.1.1.73 BRENDA
Gene Ontology	Chain Function Process Component A DNA (cytosine-5-)-methyltran...
Primary reference	Engineered extrahelical base destabilization enhances sequence discrimination of DNA methyltransferase M.HhaI., Youngblood B, Shieh FK, De Los Rios S, Perona JJ, Reich NO, J Mol Biol. 2006 Sep 15;362(2):334-46. Epub 2006 Jul 21. PMID:16919299

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (67 Kb) [Save to disk] Biological Unit Coordinates (2i9k.pdb1.gz) 62 Kb LPC: Ligand-Protein Contacts for 2I9K CSU: Contacts of Structural Units for 2I9K Likely Quarternary Molecular Structure file(s) for 2I9K Structure Factors (1574 Kb) Retrieve 2I9K in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2I9K from S2C, [Save to disk]

View 2I9K 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 2I9K

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Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 2I9K, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2i9k_D] [2i9k_C] [2i9k_A] [2i9k] SWISS-PROT database: [P05102] Domain organization of [MTH1_HAEPH] by SWISSPFAM

Other resources with information on 2I9K

Community annotation for 2I9K at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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