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1H56

Structural and biochemical characterization of a new magnesium ion binding site near Tyr94 in the restriction endonuclease PvuII

Functional Information from GO Data
ChainGOidnamespacecontents
A0003677molecular_functionDNA binding
A0004518molecular_functionnuclease activity
A0004519molecular_functionendonuclease activity
A0009036molecular_functiontype II site-specific deoxyribonuclease activity
A0009307biological_processDNA restriction-modification system
A0016787molecular_functionhydrolase activity
A0046872molecular_functionmetal ion binding
B0003677molecular_functionDNA binding
B0004518molecular_functionnuclease activity
B0004519molecular_functionendonuclease activity
B0009036molecular_functiontype II site-specific deoxyribonuclease activity
B0009307biological_processDNA restriction-modification system
B0016787molecular_functionhydrolase activity
B0046872molecular_functionmetal ion binding
Functional Information from PDB Data
site_idAC1
Number of Residues5
DetailsBINDING SITE FOR RESIDUE MG A 1
ChainResidue
AASP58
AGLU68
ALYS70
AHOH2014
AHOH2016

site_idAC2
Number of Residues4
DetailsBINDING SITE FOR RESIDUE MG B 1
ChainResidue
BTHR82
BHIS83
BTYR94
BHOH2013

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues4
DetailsBinding site: {"evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues1
DetailsAnnotated By Reference To The Literature 1pvi
ChainResidueDetails
ALYS70

site_idCSA2
Number of Residues1
DetailsAnnotated By Reference To The Literature 1pvi
ChainResidueDetails
BLYS70

site_idMCSA1
Number of Residues3
DetailsM-CSA 897
ChainResidueDetails
AASP58metal ligand
AGLU68metal ligand
ALYS70proton shuttle (general acid/base)

site_idMCSA2
Number of Residues3
DetailsM-CSA 897
ChainResidueDetails
BASP58metal ligand
BGLU68metal ligand
BLYS70proton shuttle (general acid/base)

245663

PDB entries from 2025-12-03

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