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1H6N

Formation of a tyrosyl radical intermediate in Proteus mirabilis catalase by directed mutagenesis and consequences for nucleotide reactivity

Functional Information from GO Data
ChainGOidnamespacecontents
A0004096molecular_functioncatalase activity
A0004601molecular_functionperoxidase activity
A0005737cellular_componentcytoplasm
A0006979biological_processresponse to oxidative stress
A0016491molecular_functionoxidoreductase activity
A0020037molecular_functionheme binding
A0042542biological_processresponse to hydrogen peroxide
A0042744biological_processhydrogen peroxide catabolic process
A0046872molecular_functionmetal ion binding
A0098869biological_processcellular oxidant detoxification
Functional Information from PDB Data
site_idAC1
Number of Residues3
DetailsBINDING SITE FOR RESIDUE ACT A 700
ChainResidue
AHIS42
AARG342
AHIS349

site_idAC2
Number of Residues2
DetailsBINDING SITE FOR RESIDUE SO4 A 800
ChainResidue
AARG423
AHOH2300

site_idAC3
Number of Residues25
DetailsBINDING SITE FOR RESIDUE HEM A 600
ChainResidue
AARG91
AGLY110
AVAL125
AGLY126
AASN127
APRO137
APHE140
AGLY195
ASER196
AHIS197
APHE313
AMET329
AARG333
ASER336
ATYR337
AHIS341
AARG344
AHOH2043
AHOH2072
AHOH2324
AHOH2325
ALEU40
AASP44
AARG51
AHIS54

Functional Information from PROSITE/UniProt
site_idPS00437
Number of Residues9
DetailsCATALASE_1 Catalase proximal heme-ligand signature. RLFSYgDAH
ChainResidueDetails
AARG333-HIS341

site_idPS00438
Number of Residues17
DetailsCATALASE_2 Catalase proximal active site signature. FdRevipERrmHakGSG
ChainResidueDetails
APHE43-GLY59

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues2
DetailsActive site: {}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsBinding site: {"description":"axial binding residue","evidences":[{"source":"PubMed","id":"7791219","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsModified residue: {"description":"Methionine sulfone","evidences":[{"source":"PubMed","id":"7786407","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues3
DetailsAnnotated By Reference To The Literature 1iph
ChainResidueDetails
AHIS54
AASN127
ASER93

247536

PDB entries from 2026-01-14

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