Structure of PDB 1tx3 Chain A Binding Site BS03

Receptor Information
>1tx3 Chain A (length=249) Species: 727 (Haemophilus influenzae) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
SFIKPIYQDINSILIGQKVKRPAAGEPFEKLVYKFLKENLSDLTFKQYEY
LNDLFMKNPAIIGHEARYKLFNSPTLLFLLSRGKAATENWSIENLFEEKQ
NDTADILLVKDQFYELLDVKTRNISKSAQAPNIISAYKLAQTCAKMIDNK
EFDLFDINYLEVDWELNGEDLVCVSTSFAELFKSEPSELYINWAAAMQIQ
FHVRDLDQGFNGTREEWAKSYLKHFVTQAEQRAISMIDKFVKPFKKYIL
Ligand information
Ligand IDNA
InChIInChI=1S/Na/q+1
InChIKeyFKNQFGJONOIPTF-UHFFFAOYSA-N
SMILES
SoftwareSMILES
ACDLabs 10.04
CACTVS 3.341
OpenEye OEToolkits 1.5.0		[Na+]
FormulaNa
NameSODIUM ION
ChEMBL
DrugBankDB14516
ZINC
PDB chain1tx3 Chain A Residue 801 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB1tx3 Ca2+ binding in the active site of HincII: implications for the catalytic mechanism
Resolution2.5 Å
Binding residue
(original residue number in PDB)		D127 I142 I143
Binding residue
(residue number reindexed from 1)		D118 I133 I134
Annotation score3
Enzymatic activity
Enzyme Commision number 3.1.21.4: type II site-specific deoxyribonuclease.
Gene Ontology
Molecular Function
GO:0003677 DNA binding
GO:0004519 endonuclease activity
GO:0009036 type II site-specific deoxyribonuclease activity
Biological Process
GO:0009307 DNA restriction-modification system

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Molecular Function
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Biological Process
External links
PDB RCSB:1tx3, PDBe:1tx3, PDBj:1tx3
PDBsum1tx3
PubMed15491133
UniProtP17743|T2C2_HAEIF Type II restriction enzyme HincII (Gene Name=hincIIR)

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