Structure of PDB 3gq3 Chain A

Receptor sequence
>3gq3A (length=250) Species: 1422 (Geobacillus stearothermophilus) [Search protein sequence]
PELPEVETIRRTLLPLIVGKTIEDVRIFWPNIIRHPRDSEAFAARMIGQT
VRGLERRGKFLKFLLDRDALISHLRMEGRYAVASALEPLEPHTHVVFCFT
DGSELRYRDVRKFGTMHVYAKEEADRRPPLAELGPEPLSPAFSPAVLAER
AVKTKRSVKALLLDCTVVAGFGNIYVDESLFRAGILPGRPAASLSSKEIE
RLHEEMVATIGEAHLYVYGRQGNPCKRCGTPIEKTVVAGRGTHYCPRCQR
3D structure
PDB3gq3 Encounter and extrusion of an intrahelical lesion by a DNA repair enzyme.
ChainA
Resolution1.83 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) P2 E3
Catalytic site (residue number reindexed from 1) P1 E2
Enzyme Commision number 3.2.2.23: DNA-formamidopyrimidine glycosylase.
4.2.99.18: DNA-(apurinic or apyrimidinic site) lyase.
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 dna A W30 N32 V111 R112 K113 F114 T155 K156 W29 N31 V110 R111 K112 F113 T154 K155
BS02 dna A H74 R76 M77 R112 F114 P130 G173 N174 Y242 R264 H73 R75 M76 R111 F113 P129 G172 N173 Y218 R240
BS03 ZN A C249 C252 C269 C272 C225 C228 C245 C248
Gene Ontology
Molecular Function
GO:0003676 nucleic acid binding
GO:0003677 DNA binding
GO:0003684 damaged DNA binding
GO:0003906 DNA-(apurinic or apyrimidinic site) endonuclease activity
GO:0008270 zinc ion binding
GO:0008534 oxidized purine nucleobase lesion DNA N-glycosylase activity
GO:0016787 hydrolase activity
GO:0016798 hydrolase activity, acting on glycosyl bonds
GO:0016799 hydrolase activity, hydrolyzing N-glycosyl compounds
GO:0016829 lyase activity
GO:0019104 DNA N-glycosylase activity
GO:0034039 8-oxo-7,8-dihydroguanine DNA N-glycosylase activity
GO:0046872 metal ion binding
GO:0140078 class I DNA-(apurinic or apyrimidinic site) endonuclease activity
Biological Process
GO:0006281 DNA repair
GO:0006284 base-excision repair

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Molecular Function
View graph for
Biological Process
External links
PDB RCSB:3gq3, PDBe:3gq3, PDBj:3gq3
PDBsum3gq3
PubMed20010681
UniProtP84131

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