KATG_FRAT1
ID KATG_FRAT1 Reviewed; 741 AA.
AC Q14IA9;
DT 25-NOV-2008, integrated into UniProtKB/Swiss-Prot.
DT 22-AUG-2006, sequence version 1.
DT 03-AUG-2022, entry version 84.
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};
DE Flags: Precursor;
GN Name=katG {ECO:0000255|HAMAP-Rule:MF_01961}; OrderedLocusNames=FTF0721c;
OS Francisella tularensis subsp. tularensis (strain FSC 198).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Thiotrichales;
OC Francisellaceae; Francisella.
OX NCBI_TaxID=393115;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=FSC 198;
RX PubMed=17406676; DOI=10.1371/journal.pone.0000352;
RA Chaudhuri R.R., Ren C.-P., Desmond L., Vincent G.A., Silman N.J.,
RA Brehm J.K., Elmore M.J., Hudson M.J., Forsman M., Isherwood K.E.,
RA Gurycova D., Minton N.P., Titball R.W., Pallen M.J., Vipond R.;
RT "Genome sequencing shows that European isolates of Francisella tularensis
RT subspecies tularensis are almost identical to US laboratory strain Schu
RT S4.";
RL PLoS ONE 2:E352-E352(2007).
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; AM286280; CAL08737.1; -; Genomic_DNA.
DR RefSeq; WP_003020536.1; NC_008245.1.
DR AlphaFoldDB; Q14IA9; -.
DR SMR; Q14IA9; -.
DR KEGG; ftf:FTF0721c; -.
DR HOGENOM; CLU_025424_2_0_6; -.
DR OMA; EEIFWGP; -.
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;
KW Signal.
FT SIGNAL 1..23
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01961"
FT CHAIN 24..741
FT /note="Catalase-peroxidase"
FT /id="PRO_0000354795"
FT ACT_SITE 103
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01961"
FT BINDING 264
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 99
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01961"
FT CROSSLNK 102..223
FT /note="Tryptophyl-tyrosyl-methioninium (Trp-Tyr) (with M-
FT 249)"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01961"
FT CROSSLNK 223..249
FT /note="Tryptophyl-tyrosyl-methioninium (Tyr-Met) (with W-
FT 102)"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01961"
SQ SEQUENCE 741 AA; 82501 MW; 51F0EDA67FBB77D4 CRC64;
MLKKIVTALG MSGMLLASSN AIAEDTTTKN DNLSPQSVDL SPLRNLNKLD SPMDKDYNYH
QAFKKLDTEQ LKKDMQDLLT QSQDWWPADF GNYGPFFIRL SWHDAGTYRI YDGRGGANRG
QQRFSPLNSW PDNVNLDKAR QLLWPIKQKY GDAVSWSDLI VLAGTVSLES MGMKPIGFAF
GREDDWQGDD TNWGLSPEEI MSSNVRDGKL APAYAATQMG LIYVNPEGPD GKPDIKGAAS
EIRQAFRAMG MTDKETVALI AGGHTFGKTH GAVPEDKVKQ AIGPAPDKAP IEQQGLGWHN
SYGTGNGDDT MGSGLEGSWT STPTFWNHDF LHNLYNLDWK KTLSPAGAHQ WTPTNAKPEN
MVPDAHKPGV KHKPIMFTTD LALKEDDGFN KYTQEFYNNP EEFKEEFAKA WFKLTHRDMG
PKSRYIGPWI PEQNFIWQDP VPAADYKQVS TQDIAQLEQD IINSGLTNQQ LIKTAWDSAS
TYRKTDYRGG SNGARIALAP EKDWQMNEPA KLEVVLTKLK EIQTNFNNSK TDGTKVSLAD
LIVLGGNVGV EQAAKQAGYN IQMPFVPGRT DATQAQTDIE SFNYLKTKSD GFINYTDGSV
SADKLPQTLV EKASMLDLNI PEMTVLVGGM RALDVNYDNS QEGVLTTTPG QLNNSFFVNL
LDMSTQWKKS DKKDGEYIGI DRKTGKQKWT ASPVDLIFGS NSELKAVAQV YAENGNEQKF
VNDFAKAWHK VMMLGRFDVQ Q
