HAMAP annotation rule: MF_01961
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Accession MF_01961
Dates 23-OCT-2008 (Created)
11-JUL-2011 (Last updated, Version 11)
Data class Protein
Names Catal-peroxid



Identifier KATG
Protein name
RecName: Full=Catalase-peroxidase;
Short=CP;
EC=1.11.1.21;
AltName: Full=Peroxidase/catalase;
Gene name katG
FUNCTION: Bifunctional enzyme with both catalase and broad-spectrum peroxidase activity (By similarity).
CATALYTIC ACTIVITY: Donor + H(2)O(2) = oxidized donor + 2 H(2)O.
CATALYTIC ACTIVITY: 2 H(2)O(2) = O(2) + 2 H(2)O.
COFACTOR: Binds 1 heme B (iron-protoporphyrin IX) group per dimer (By similarity).
SUBUNIT: Homodimer or homotetramer (By similarity).
PTM: The covalent Trp-Tyr-Met adduct is important for the catalase, but not the peroxidase activity of the enzyme (By similarity).
SIMILARITY: Belongs to the peroxidase family. Peroxidase/catalase subfamily.
PROSITE PS00435; PEROXIDASE_1; 1;
PS00436; PEROXIDASE_2; 1;
PS50873; PEROXIDASE_4; 1;
Pfam PF00141; peroxidase; 2;
PRINTS PR00460; BPEROXIDASE; 1;
PR00458; PEROXIDASE; 1;
TIGRFAMs TIGR00198; Cat_per_HPI; 1;
General Signal; -; 0-1; trigger=Yes;
GO:0004096; Molecular function: catalase activity.
GO:0004601; Molecular function: peroxidase activity.
From: KATG_ECOLI (P13029)
Key     From     To       Description   Condition   FTGroup
ACT_SITE     106     106       Proton acceptor (By similarity)   H  
METAL     267     267       Iron (heme axial ligand) (By similarity)   H  
SITE     102     102       Transition state stabilizer (By similarity)   R  
CROSSLNK     105     226       Tryptophyl-tyrosyl-methioninium (Trp-Tyr) (with #{Met-252}) (By similarity)   W-x*-Y  
CROSSLNK     226     252       Tryptophyl-tyrosyl-methioninium (Tyr-Met) (with #{Trp-105}) (By similarity)   Y-x*-M  



Size range: 699-781 amino acids
Related UniRules: None
Template: P13029 (KATG_ECOLI); O59651 (KATG2_HALMA); Q939D2 (KATG_BURPS); Q08129 (KATG_MYCTU); Q31MN3 (KATG_SYNE7): [Recover all]
Scope: Bacteria
Archaea; Euryarchaeota
Fusion: Nter: None; Cter: None
Duplicate: in ALKMQ, BURA4, BURCA, BURCC, BURCH, BURCJ, BURCM, BURVG, CELJU, ECO57, HALMA, IDILO, LEGPA, LEGPC, LEGPH, LEGPL, LEGPN, MYCFO, MYCS2, MYCVP, CUPPJ, SHEAM, SHEFN, SHEON, SHESA, SHESM, SHESR, VIBPA
Plasmid encoded: in DINSH, ECO57, ECOLX, HALS3, HALSA, RALME, RHIE6, RHIEC, RHIET, RHIL3, RHIME, RHISN, RHOS5, SILPO, SINMW

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