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1NUI

Crystal Structure of the primase fragment of Bacteriophage T7 primase-helicase protein

Functional Information from GO Data
ChainGOidnamespacecontents
A0003697molecular_functionsingle-stranded DNA binding
A0004386molecular_functionhelicase activity
A0008270molecular_functionzinc ion binding
A0043139molecular_function5'-3' DNA helicase activity
B0003697molecular_functionsingle-stranded DNA binding
B0004386molecular_functionhelicase activity
B0008270molecular_functionzinc ion binding
B0043139molecular_function5'-3' DNA helicase activity
Functional Information from PDB Data
site_idAC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN A 501
ChainResidue
ACYS17
ACYS20
ACYS36
ACYS39

site_idAC2
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN B 502
ChainResidue
BCYS17
BCYS20
BCYS36
BCYS39

site_idAC3
Number of Residues2
DetailsBINDING SITE FOR RESIDUE MG A 601
ChainResidue
AASP207
AGLU157

site_idAC4
Number of Residues3
DetailsBINDING SITE FOR RESIDUE MG A 602
ChainResidue
AARG84
AASP237
AHOH807

site_idAC5
Number of Residues4
DetailsBINDING SITE FOR RESIDUE MG B 603
ChainResidue
BGLU157
BASP207
BASP209
BHOH805

site_idAC6
Number of Residues1
DetailsBINDING SITE FOR RESIDUE MG B 604
ChainResidue
BASP237

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues174
DetailsDomain: {"description":"Toprim","evidences":[{"source":"PROSITE-ProRule","id":"PRU00995","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues44
DetailsZinc finger: {"description":"C4-like; zinc ribbon fold","evidences":[{"source":"HAMAP-Rule","id":"MF_04154","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"10200256","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"12769857","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"2829184","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues10
DetailsBinding site: {"evidences":[{"source":"HAMAP-Rule","id":"MF_04154","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"12769857","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"HAMAP-Rule","id":"MF_04154","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"12769857","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

239149

PDB entries from 2025-07-23

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