Structure of PDB 2ibs Chain D Binding Site BS02

Receptor Information
>2ibs Chain D (length=393) Species: 271 (Thermus aquaticus) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
VETPPEVVDFMVSLAEAPRGGRVLEPACAHGPFLRAFREAHGTAYRFVGV
EIDPKALDLPPWAEGILADFLLWEPGEAFDLILGNPPYGIVGEASKYPIH
VFKAVKDLYKKAFSTWKGKYNLYGAFLEKAVRLLKPGGVLVFVVPATWLV
LEDFALLREFLAREGKTSVYYLGEVFPQKKVSAVVIRFQKSGKGLSLWDT
QESESGFTPILWAEYPHWEGEIIRFETEETRKLEISGMPLGDLFHIRFAA
RSPEFKKHPAVRKEPGPGLVPVLTGRNLKPGWVDYEKNHSGLWMPKERAK
ELRDFYATPHLVVAHTKGTRVVAAWDERAYPWREEFHLLPKEGVRLDPSS
LVQWLNSEAMQKHVRTLYRDFVPHLTLRMLERLPVRREYGFHT
Ligand information
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

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PDB2ibs 2-Aminopurine Flipped into the Active Site of the Adenine-Specific DNA Methyltransferase M.TaqI: Crystal Structures and Time-Resolved Fluorescence
Resolution2.4 Å
Binding residue
(original residue number in PDB)		G112 E113 K116 Y117 K126 K130 G138 R271 S272 K276 G295 R296 T336 K337 R353 E354 P393
Binding residue
(residue number reindexed from 1)		G92 E93 K96 Y97 K106 K110 G118 R251 S252 K256 G275 R276 T316 K317 R333 E334 P373
Binding affinityPDBbind-CN: Kd=0.5uM
Enzymatic activity
Enzyme Commision number 2.1.1.72: site-specific DNA-methyltransferase (adenine-specific).
Gene Ontology
Molecular Function
GO:0003676 nucleic acid binding
GO:0003677 DNA binding
GO:0008168 methyltransferase activity
GO:0009007 site-specific DNA-methyltransferase (adenine-specific) activity
Biological Process
GO:0006304 DNA modification
GO:0009307 DNA restriction-modification system
GO:0032259 methylation

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Molecular Function
View graph for
Biological Process
External links
PDB RCSB:2ibs, PDBe:2ibs, PDBj:2ibs
PDBsum2ibs
PubMed17455934
UniProtP14385|MTTA_THEAQ Type II methyltransferase M.TaqI (Gene Name=taqIM)

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