Structure of PDB 2dtu Chain A

Receptor sequence

>2dtuA (length=896) Species: 12353 (Escherichia phage RB69)

MKEFYLTVEQIGDSIFERYIDSNGRERTREVEYKPSLFAHCPESQATKYF
DIYGKPCTRKLFANMRDASQWIKRMEDIGLEALGMDDFKLAYLSDTYNYE
IKYDHTKIRVANFDIEVTSPDGFPEPSQAKHPIDAITHYDSIDDRFYVFD
LLNSPYGNVEEWSIEIAAKLQEQGGDEVPSEIIDKIIYMPFDNEKELLME
YLNFWQQKTPVILTGWNVESFAIPYVYNRIKNIFGESTAKRLSPHRKTRV
KVGEIITLFGISVLDYIDLYKKFSFTNQPSYSLDYISEFELNVGKLKYDG
PISKLRESNHQRYISYNIIAVYRVLQIDAKRQFINLSLDMGYYAKIQIQS
VFSPIKTWDAIIFNSLKEQNKVIPQGRSHPVQPYPGAFVKEPIPNRYKYV
MSFDLTSLYPSIIRQVNISPETIAGTFKVAPLHDYINAVAERPSDVYSCS
PNGMMYYKDRDGVVPTEITKVFNQRKEHKGYMLAAQRNGEIIKEALHNPN
LSVDEPLDVDYRFDFSDEIKEKIKKLSAKSLNEMLFRAQRTEVAGMTAQI
NRKLLINSLYGALGNVWFRYYDLRNATAITTFGQMALQWIERKVNEYLNE
VCGTEGEAFVLYGDTDSIYVSADKIIDKVGESKFRDTNHWVDFLDKFARE
RMEPAIDRGFREMCEYMNNKQHLMFMDREAIAGPPLGSKGIGGFWTGKKR
YALNVWDMEGTRYAEPKLKIMGLETQKSSTPKAVQKALKECIRRMLQEGE
ESLQEYFKEFEKEFRQLNYISIASVSSANNIAKYDVGGFPGPKCPFHIRG
ILTYNRAIKGNIDAPQVVEGEKVYVLPLREGNPFGDKCIAWPSGTEITDL
IKDDVLHWMDYTVLLEKTFIKPLEGFTSAAKLDYEKKASLFDMFDF

3D structure

• PDB: 2dtu Structural and biochemical investigation of the role in proofreading of a beta hairpin loop found in the exonuclease domain of a replicative DNA polymerase of the B family.
• Chain: A
• Resolution: 2.37 Å

Enzymatic activity

• Enzyme Commision number: 2.7.7.7: DNA-directed DNA polymerase.
  3.1.11.-

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	D275 F359 S360 P361 G393 W574 K705 K706 R707 K800 K844 K874	D268 F352 S353 P354 G386 W567 K698 K699 R700 K793 K837 K867
BS02	dna	A	F282 M728 S735 S784 N786 Y791 H804	F275 M721 S728 S777 N779 Y784 H797
BS03	dna	A	S36 F38 Y49 R59 G84 D95 F370 K374 K378 I380	S36 F38 Y49 R59 G84 D95 F363 K367 K371 I373

Gene Ontology

Molecular Function

• GO:0000166 nucleotide binding
• GO:0003676 nucleic acid binding
• GO:0003677 DNA binding
• GO:0003887 DNA-directed DNA polymerase activity
• GO:0004527 exonuclease activity
• GO:0008408 3'-5' exonuclease activity
• GO:0046872 metal ion binding

Biological Process

• GO:0006260 DNA replication
• GO:0006261 DNA-templated DNA replication
• GO:0039686 bidirectional double-stranded viral DNA replication
• GO:0039693 viral DNA genome replication

External links

• PDB: RCSB:2dtu, PDBe:2dtu, PDBj:2dtu
• PDBsum: 2dtu
• PubMed: 17098747
• UniProt: Q38087|DPOL_BPR69 DNA-directed DNA polymerase (Gene Name=43)