KATG_ECOLC
ID KATG_ECOLC Reviewed; 726 AA.
AC B1IVD5;
DT 25-NOV-2008, integrated into UniProtKB/Swiss-Prot.
DT 29-APR-2008, sequence version 1.
DT 03-AUG-2022, entry version 78.
DE RecName: Full=Catalase-peroxidase {ECO:0000255|HAMAP-Rule:MF_01961};
DE Short=CP {ECO:0000255|HAMAP-Rule:MF_01961};
DE EC=1.11.1.21 {ECO:0000255|HAMAP-Rule:MF_01961};
DE AltName: Full=Peroxidase/catalase {ECO:0000255|HAMAP-Rule:MF_01961};
GN Name=katG {ECO:0000255|HAMAP-Rule:MF_01961}; OrderedLocusNames=EcolC_4073;
OS Escherichia coli (strain ATCC 8739 / DSM 1576 / NBRC 3972 / NCIMB 8545 /
OS WDCM 00012 / Crooks).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; Escherichia.
OX NCBI_TaxID=481805;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 8739 / DSM 1576 / NBRC 3972 / NCIMB 8545 / WDCM 00012 / Crooks;
RA Copeland A., Lucas S., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA Bruce D., Goodwin L., Pitluck S., Kiss H., Brettin T., Detter J.C., Han C.,
RA Kuske C.R., Schmutz J., Larimer F., Land M., Hauser L., Kyrpides N.,
RA Mikhailova N., Ingram L., Richardson P.;
RT "Complete sequence of Escherichia coli C str. ATCC 8739.";
RL Submitted (FEB-2008) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Bifunctional enzyme with both catalase and broad-spectrum
CC peroxidase activity. {ECO:0000255|HAMAP-Rule:MF_01961}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=AH2 + H2O2 = A + 2 H2O; Xref=Rhea:RHEA:30275,
CC ChEBI:CHEBI:13193, ChEBI:CHEBI:15377, ChEBI:CHEBI:16240,
CC ChEBI:CHEBI:17499; EC=1.11.1.21; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01961};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2 H2O2 = 2 H2O + O2; Xref=Rhea:RHEA:20309, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15379, ChEBI:CHEBI:16240; EC=1.11.1.21;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01961};
CC -!- COFACTOR:
CC Name=heme b; Xref=ChEBI:CHEBI:60344;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01961};
CC Note=Binds 1 heme b (iron(II)-protoporphyrin IX) group per dimer.
CC {ECO:0000255|HAMAP-Rule:MF_01961};
CC -!- SUBUNIT: Homodimer or homotetramer. {ECO:0000255|HAMAP-Rule:MF_01961}.
CC -!- PTM: Formation of the three residue Trp-Tyr-Met cross-link is important
CC for the catalase, but not the peroxidase activity of the enzyme.
CC {ECO:0000255|HAMAP-Rule:MF_01961}.
CC -!- SIMILARITY: Belongs to the peroxidase family. Peroxidase/catalase
CC subfamily. {ECO:0000255|HAMAP-Rule:MF_01961}.
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DR EMBL; CP000946; ACA79672.1; -; Genomic_DNA.
DR RefSeq; WP_001295695.1; NZ_CP022959.1.
DR AlphaFoldDB; B1IVD5; -.
DR SMR; B1IVD5; -.
DR KEGG; ecl:EcolC_4073; -.
DR HOGENOM; CLU_025424_2_0_6; -.
DR OMA; MILAGNC; -.
DR BRENDA; 1.11.1.21; 2026.
DR GO; GO:0004096; F:catalase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0020037; F:heme binding; IEA:InterPro.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0042744; P:hydrogen peroxide catabolic process; IEA:UniProtKB-KW.
DR GO; GO:0006979; P:response to oxidative stress; IEA:InterPro.
DR HAMAP; MF_01961; Catal_peroxid; 1.
DR InterPro; IPR000763; Catalase_peroxidase.
DR InterPro; IPR002016; Haem_peroxidase.
DR InterPro; IPR010255; Haem_peroxidase_sf.
DR InterPro; IPR019794; Peroxidases_AS.
DR InterPro; IPR019793; Peroxidases_heam-ligand_BS.
DR PANTHER; PTHR30555; PTHR30555; 1.
DR Pfam; PF00141; peroxidase; 2.
DR PRINTS; PR00460; BPEROXIDASE.
DR PRINTS; PR00458; PEROXIDASE.
DR SUPFAM; SSF48113; SSF48113; 2.
DR TIGRFAMs; TIGR00198; cat_per_HPI; 1.
DR PROSITE; PS00435; PEROXIDASE_1; 1.
DR PROSITE; PS00436; PEROXIDASE_2; 1.
DR PROSITE; PS50873; PEROXIDASE_4; 1.
PE 3: Inferred from homology;
KW Heme; Hydrogen peroxide; Iron; Metal-binding; Oxidoreductase; Peroxidase.
FT CHAIN 1..726
FT /note="Catalase-peroxidase"
FT /id="PRO_0000354776"
FT REGION 1..33
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 1..16
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 106
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01961"
FT BINDING 267
FT /ligand="heme b"
FT /ligand_id="ChEBI:CHEBI:60344"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01961"
FT SITE 102
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01961"
FT CROSSLNK 105..226
FT /note="Tryptophyl-tyrosyl-methioninium (Trp-Tyr) (with M-
FT 252)"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01961"
FT CROSSLNK 226..252
FT /note="Tryptophyl-tyrosyl-methioninium (Tyr-Met) (with W-
FT 105)"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01961"
SQ SEQUENCE 726 AA; 80024 MW; 24D32EBED5DE9BD6 CRC64;
MSTSDDIHNT TATGKCPFHQ GGHDQSAGAG TTTRDWWPNQ LRVDLLNQHS NRSNPLGEDF
DYRKEFSKLD YYGLKKDLKA LLTESQPWWP ADWGSYAGLF IRMAWHGAGT YRSIDGRGGA
GRGQQRFAPL NSWPDNVSLD KARRLLWPIK QKYGQKISWA DLFILAGNVA LENSGFRTFG
FGAGREDVWE PDLDVNWGDE KAWLTHRHPE ALAKAPLGAT EMGLIYVNPE GPDHSGEPLS
AAAAIRATFG NMGMNDEETV ALIAGGHTLG KTHGAGPTSN VGPDPEAAPI EEQGLGWAST
YGSGVGADAI TSGLEVVWTQ TPTQWSNYFF ENLFKYEWVQ TRSPAGAIQF EAVDAPEIIP
DPFDPSKKRK PTMLVTDLTL RFDPEFEKIS RRFLNDPQAF NEAFARAWFK LTHRDMGPKS
RYIGPEVPKE DLIWQDPLPQ PIYNPTEQDI IDLKFAIADS GLSVSELVSV AWASASTFRG
GDKRGGANGA RLALMPQRDW DVNAAAVRAL PVLEKIQKES GKASLADIIV LAGVVGVEKA
ASAAGLSIHV PFAPGRVDAR QDQTDIEMFE LLEPIADGFR NYRARLDVST TESLLIDKAQ
QLTLTAPEMT ALVGGMRVLG ANFDGSKNGV FTDRVGVLSN DFFVNLLDMR YEWKATDESK
ELFEGRDRET GEVKFTASRA DLVFGSNSVL RAVAEVYASS DAHEKFVKDF VAAWVKVMNL
DRFDLL
