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1H7K

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 Residues4
DetailsBINDING SITE FOR RESIDUE ACT A 700
ChainResidue
AGLU38
AHIS42
AARG342
AHIS349

site_idAC2
Number of Residues2
DetailsBINDING SITE FOR RESIDUE SO4 A 800
ChainResidue
AARG423
AHOH2159

site_idAC3
Number of Residues22
DetailsBINDING SITE FOR RESIDUE HEM A 600
ChainResidue
AARG91
AGLY110
AVAL125
AGLY126
AASN127
APRO137
APHE140
ASER196
AHIS197
APHE313
AMET329
AARG333
ASER336
ATYR337
AHIS341
AARG344
AHOH2038
AHOH2167
AHOH2168
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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