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Entry version 128 (05 Jun 2019)
Sequence version 1 (01 Feb 1997)
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Protein

Catalase-peroxidase

Gene

katG

Organism
Synechocystis sp. (strain PCC 6803 / Kazusa)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Bifunctional enzyme with both catalase and broad-spectrum peroxidase activity. Displays also NADH oxidase, isoniazid hydrazine lyase and isonicotinoyl-NAD synthase activity.

Miscellaneous

In contrast to the M.tuberculosis enzyme, no Trp radical is formed on the proximal Trp residue (Trp-341).

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

<p>This subsection of the ‘Function’ section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

heme bNote: Binds 1 heme b (iron(II)-protoporphyrin IX) group per dimer.

<p>This subsection of the ‘Function’ section describes biophysical and chemical properties, such as maximal absorption, kinetic parameters, pH dependence, redox potentials and temperature dependence.<p><a href='/help/biophysicochemical_properties' target='_top'>More...</a></p>Kineticsi

  1. KM=20 mM for H2O2 for the catalase reaction (at pH 5.5-6.0)3 Publications
  2. KM=3.1 mM for H2O2 for the catalase reaction (at pH 7.0)3 Publications
  3. KM=1000 µM for H2O2 for the peroxidase reaction3 Publications
  4. KM=7 µM for ABTS for the peroxidase reaction3 Publications
  1. Vmax=6000 µmol/min/mg enzyme for H2O2 for the catalase reaction (at pH 5.5-6.0)3 Publications
  2. Vmax=5400 µmol/min/mg enzyme for H2O2 for the catalase reaction (at pH 7.0)3 Publications
  3. Vmax=9.3 µmol/min/mg enzyme for ABTS for the peroxidase reaction3 Publications

pH dependencei

Optimum pH is 4.25 for the peroxidase reaction and 6.5 for the catalase reaction.3 Publications

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei106Tryptophan radical intermediate2 Publications1
<p>This subsection describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections (‘Function’, ‘PTM / Processing’, ‘Pathology and Biotech’) according to its content.<p><a href='/help/site' target='_top'>More...</a></p>Sitei119Transition state stabilizerUniRule annotation1
Active sitei123Proton acceptorUniRule annotation1
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the ‘Description’ field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi290Iron (heme axial ligand)UniRule annotation1

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionOxidoreductase, Peroxidase
Biological processHydrogen peroxide
LigandHeme, Iron, Metal-binding

Enzyme and pathway databases

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
1.11.1.21 382

SABIO-RK: Biochemical Reaction Kinetics Database

More...
SABIO-RKi
P73911

Protein family/group databases

PeroxiBase, a peroxidase database

More...
PeroxiBasei
2479 SYspCP01_PCC6803

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Catalase-peroxidaseUniRule annotation (EC:1.11.1.21UniRule annotation)
Short name:
CPUniRule annotation
Alternative name(s):
Peroxidase/catalaseUniRule annotation
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:katGUniRule annotation
Ordered Locus Names:sll1987
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiSynechocystis sp. (strain PCC 6803 / Kazusa)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri1111708 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiBacteriaCyanobacteriaSynechococcalesMerismopediaceaeSynechocystis
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000001425 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">proteome</a> can consist of several components. <br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

GO - Cellular componenti

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section indicates that the initiator methionine is cleaved from the mature protein.<p><a href='/help/init_met' target='_top'>More...</a></p>Initiator methionineiRemoved
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00003450962 – 754Catalase-peroxidaseAdd BLAST753

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section describes <strong>covalent linkages</strong> of various types formed <strong>between two proteins (interchain cross-links)</strong> or <strong>between two parts of the same protein (intrachain cross-links)</strong>, except the disulfide bonds that are annotated in the <a href="http://www.uniprot.org/manual/disulfid">'Disulfide bond'</a> subsection.<p><a href='/help/crosslnk' target='_top'>More...</a></p>Cross-linki122 ↔ 249Tryptophyl-tyrosyl-methioninium (Trp-Tyr) (with M-275)
Cross-linki249 ↔ 275Tryptophyl-tyrosyl-methioninium (Tyr-Met) (with W-122)

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

Formation of the three residue Trp-Tyr-Met cross-link is important for the catalase, but not the peroxidase activity of the enzyme.UniRule annotation

Keywords - PTMi

Organic radical

Proteomic databases

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
P73911

PRoteomics IDEntifications database

More...
PRIDEi
P73911

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Homodimer.

2 Publications

Protein-protein interaction databases

Protein interaction database and analysis system

More...
IntActi
P73911, 8 interactors

STRING: functional protein association networks

More...
STRINGi
1148.1653058

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
P73911

Database of comparative protein structure models

More...
ModBasei
Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

<p>This subsection of the ‘Family and domains’ section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the peroxidase family. Peroxidase/catalase subfamily.UniRule annotation

Phylogenomic databases

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000218110

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P73911

KEGG Orthology (KO)

More...
KOi
K03782

Identification of Orthologs from Complete Genome Data

More...
OMAi
ADVWEPE

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P73911

Family and domain databases

HAMAP database of protein families

More...
HAMAPi
MF_01961 Catal_peroxid, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR000763 Catalase_peroxidase
IPR002016 Haem_peroxidase
IPR010255 Haem_peroxidase_sf
IPR019794 Peroxidases_AS

The PANTHER Classification System

More...
PANTHERi
PTHR30555 PTHR30555, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00141 peroxidase, 2 hits

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00460 BPEROXIDASE
PR00458 PEROXIDASE

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF48113 SSF48113, 2 hits

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR00198 cat_per_HPI, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00436 PEROXIDASE_2, 1 hit
PS50873 PEROXIDASE_4, 2 hits

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

P73911-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MGTQPARKLR NRVFPHPHNH RKEKPMANDQ VPASKCPVMH GANTTGQNGN
60 70 80 90 100
LNWWPNALNL DILHQHDRKT NPMDDGFNYA EAFQQLDLAA VKQDLHHLMT
110 120 130 140 150
DSQSWWPADW GHYGGLMIRM AWHAAGTYRI ADGRGGAATG NQRFAPLNSW
160 170 180 190 200
PDNVNLDKAR RLLWPIKKKY GNKLSWGDLI ILAGTMAYES MGLKVYGFAG
210 220 230 240 250
GREDIWHPEK DIYWGAEKEW LASSDHRYGS EDRESLENPL AAVQMGLIYV
260 270 280 290 300
NPEGVDGHPD PLCTAQDVRT TFARMAMNDE ETVALTAGGH TVGKCHGNSK
310 320 330 340 350
AELIGPEPEG ADVVEQGLGW HNQNGKGVGR ETMSSGIEGA WTTHPTQWDN
360 370 380 390 400
GYFYMLFNHE WELKKSPAGA WQWEPVNIKE EDKPVDVEDP NIRHNPIMTD
410 420 430 440 450
ADMAMIKDPI YRQISERFYR EPDYFAEVFA KAWFKLTHRD LGPKSRYLGP
460 470 480 490 500
DVPQEDLIWQ DPIPPVDYTL SEGEIKELEQ QILASGLTVS ELVCTAWDSA
510 520 530 540 550
RTFRSSDYRG GANGARIRLE PQKNWPGNEP TRLAKVLAVL ENIQANFAKP
560 570 580 590 600
VSLADLIVLG GGAAIAKAAL DGGIEVNVPF LPGRGDATQA MTDAESFTPL
610 620 630 640 650
EPIHDGYRNW LKQDYAVSPE ELLLERTQLM GLTAPEMTVL IGGMRVLGTN
660 670 680 690 700
HGGTKHGVFT DRVGVLSNDF FVNLTDMAYQ WRPAGNNLYE IGDRQTGEVK
710 720 730 740 750
WTATKVDLVF GSNSILRSYA EVYAQDDNRE KFVRDFVAAW TKVMNADRFD

LPRG
Length:754
Mass (Da):84,446
Last modified:February 1, 1997 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iAC5709DB6468D4F7
GO

<p>This subsection of the ‘Sequence’ section reports information derived from mass spectrometry experiments done on the entire protein or on biologically active derived peptide(s).<p><a href='/help/mass_spectrometry' target='_top'>More...</a></p>Mass spectrometryi

Molecular mass is 85122 Da from positions 2 - 754. Determined by MALDI. Reported mass includes mass of a C-terminal His6 tag, expressed in E.coli.1 Publication

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
D83990 Genomic DNA Translation: BAA20459.1
BA000022 Genomic DNA Translation: BAA17975.1

Protein sequence database of the Protein Information Resource

More...
PIRi
S75113

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
BAA17975; BAA17975; BAA17975

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
syn:sll1987

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
D83990 Genomic DNA Translation: BAA20459.1
BA000022 Genomic DNA Translation: BAA17975.1
PIRiS75113

3D structure databases

SMRiP73911
ModBaseiSearch...

Protein-protein interaction databases

IntActiP73911, 8 interactors
STRINGi1148.1653058

Protein family/group databases

PeroxiBasei2479 SYspCP01_PCC6803

Proteomic databases

PaxDbiP73911
PRIDEiP73911

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiBAA17975; BAA17975; BAA17975
KEGGisyn:sll1987

Phylogenomic databases

HOGENOMiHOG000218110
InParanoidiP73911
KOiK03782
OMAiADVWEPE
PhylomeDBiP73911

Enzyme and pathway databases

BRENDAi1.11.1.21 382
SABIO-RKiP73911

Family and domain databases

HAMAPiMF_01961 Catal_peroxid, 1 hit
InterProiView protein in InterPro
IPR000763 Catalase_peroxidase
IPR002016 Haem_peroxidase
IPR010255 Haem_peroxidase_sf
IPR019794 Peroxidases_AS
PANTHERiPTHR30555 PTHR30555, 1 hit
PfamiView protein in Pfam
PF00141 peroxidase, 2 hits
PRINTSiPR00460 BPEROXIDASE
PR00458 PEROXIDASE
SUPFAMiSSF48113 SSF48113, 2 hits
TIGRFAMsiTIGR00198 cat_per_HPI, 1 hit
PROSITEiView protein in PROSITE
PS00436 PEROXIDASE_2, 1 hit
PS50873 PEROXIDASE_4, 2 hits

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiKATG_SYNY3
<p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P73911
Secondary accession number(s): P97083, Q79EX5
<p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 22, 2008
Last sequence update: February 1, 1997
Last modified: June 5, 2019
This is version 128 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Synechocystis PCC 6803
    Synechocystis (strain PCC 6803): entries and gene names
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