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Entry version 88 (17 Jun 2020)
Sequence version 2 (22 Sep 2009)
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Protein

Phenoloxidase 3

Gene

PPO3

Organism
Drosophila erecta (Fruit fly)
Status
Reviewed-Annotation score:

Annotation score:4 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>
-Protein inferred from homologyi <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

This is a copper-containing oxidase that functions in the formation of pigments such as melanins and other polyphenolic compounds. Catalyzes the rate-limiting conversions of tyrosine to DOPA, DOPA to DOPA-quinone and possibly 5,6 dihydroxyindole to indole-5'6 quinone (By similarity).By similarity

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">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

Cu2+By similarityNote: Binds 2 copper ions per subunit.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">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 bindingi209Copper ABy similarity1
Metal bindingi213Copper ABy similarity1
Metal bindingi239Copper ABy similarity1
Metal bindingi366Copper BBy similarity1
Metal bindingi370Copper BBy similarity1
Metal bindingi406Copper BBy similarity1

<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 functionMonooxygenase, Oxidoreductase
Biological processMelanin biosynthesis
LigandCopper, Metal-binding

<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%5Fand%5Ftaxonomy%5Fsection">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:
Phenoloxidase 3 (EC:1.14.18.1)
Alternative name(s):
Diphenoloxidase subunit A3
Tyrosinase A3
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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:PPO3
Synonyms:Dox-A3, proPO59
ORF Names:GG22822
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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>OrganismiDrosophila erecta (Fruit fly)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 identifieri7220 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 lineageiEukaryotaMetazoaEcdysozoaArthropodaHexapodaInsectaPterygotaNeopteraHolometabolaDipteraBrachyceraMuscomorphaEphydroideaDrosophilidaeDrosophilaSophophora
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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
  • UP000008711 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">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: Unassembled WGS sequence

<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

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Keywords - Cellular componenti

Secreted

<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%5Fprocessing%5Fsection">PTM / Processing</a> section describes a propeptide, which is a part of a protein that is cleaved during maturation or activation. Once cleaved, a propeptide generally has no independent biological function.<p><a href='/help/propep' target='_top'>More...</a></p>PropeptideiPRO_00000359031 – 48By similarityAdd BLAST48
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_000003590451 – 683Phenoloxidase 3Add BLAST633

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section specifies the position and type of each covalently attached glycan group (mono-, di-, or polysaccharide).<p><a href='/help/carbohyd' target='_top'>More...</a></p>Glycosylationi25N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi358N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi492N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi514N-linked (GlcNAc...) asparagineSequence analysis1
<p>This subsection of the PTM / Processing":/help/ptm_processing_section section describes the positions of cysteine residues participating in disulfide bonds.<p><a href='/help/disulfid' target='_top'>More...</a></p>Disulfide bondi574 ↔ 617By similarity
Disulfide bondi576 ↔ 624By similarity

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">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

Upon activation, a trypsin type protease cleaves prophenol oxidase to yield the active enzyme.By similarity

Keywords - PTMi

Cleavage on pair of basic residues, Disulfide bond, Glycoprotein, Zymogen

<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

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
7220.FBpp0141368

<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
Q8I1F6

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 tyrosinase family.Sequence analysis

Phylogenomic databases

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_012213_0_1_1

KEGG Orthology (KO)

More...
KOi
K00505

Identification of Orthologs from Complete Genome Data

More...
OMAi
KSMGFPF

Database of Orthologous Groups

More...
OrthoDBi
254693at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q8I1F6

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.10.1280.10, 1 hit
1.20.1370.10, 1 hit
2.60.40.1520, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR013788 Hemocyanin/hexamerin
IPR000896 Hemocyanin/hexamerin_mid_dom
IPR005203 Hemocyanin_C
IPR037020 Hemocyanin_C_sf
IPR005204 Hemocyanin_N
IPR036697 Hemocyanin_N_sf
IPR014756 Ig_E-set
IPR002227 Tyrosinase_Cu-bd
IPR008922 Unchr_di-copper_centre

The PANTHER Classification System

More...
PANTHERi
PTHR11511 PTHR11511, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF03723 Hemocyanin_C, 1 hit
PF00372 Hemocyanin_M, 1 hit
PF03722 Hemocyanin_N, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00187 HAEMOCYANIN

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF48050 SSF48050, 1 hit
SSF48056 SSF48056, 1 hit
SSF81296 SSF81296, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00209 HEMOCYANIN_1, 1 hit
PS00210 HEMOCYANIN_2, 1 hit
PS00498 TYROSINASE_2, 1 hit

<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%5Flength">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%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">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%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">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.

Q8I1F6-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MADKKNLLLL FDHPTEPVFM DKGGNGTVFD VPASYVTDRY NKMCKKVQRR
60 70 80 90 100
VSGGFEKNVL VKEIPIPDLS CSMRLGRSEQ FSLFLESHRQ MACHLIDVFI
110 120 130 140 150
KMPTVDELQS VAVYARDRVN PVLFNYALSV AMLHRSDTKD LGLPAFAQIF
160 170 180 190 200
PDRFIDSQML RTMREESFVV ERSAARLPVH SSVKYTASDL DVEHRLWYFR
210 220 230 240 250
EDLGVNLHHW HWHLVYPNTA PDRSIVDKDR RGELFYYMHQ QIIARYNAER
260 270 280 290 300
LCNHMARVQP FNNLEEPIAE GYFPKMDSLV ASRAFPPRFD NTRLSDVDRP
310 320 330 340 350
INQLRVGIDD MKRWRERIYE AIHQGYVLDA NHKKIVLDDV KGIDILGNII
360 370 380 390 400
ESSQLTPNKT LYGDLHNKGH ILIAFSHDPT NKHLEYAGVM GDASTAMRDP
410 420 430 440 450
IFYKWHAFID NLFQEHKRQL SPYTEEDLTF PDVRVQSIQV ESQGQVNRLT
460 470 480 490 500
TFWQESDVDM SRGLDFVPRG HVLARFTHLQ HHPFSYTIEV ENSSEATRYG
510 520 530 540 550
YVRIFLAPKL DDGNATMLLE QQRRMMVELD KFVVTMPPGS HTITRDSTES
560 570 580 590 600
SVTIPFKRTF RNMDNPGEPQ NFLCGCGWPQ HMLIPKGRAE GLSFELFVMV
610 620 630 640 650
SNYEDDKVDQ KPEDCECSIA ASYCGLRDRL YPDRKSMGFP FDRQPRSGSE
660 670 680
LLEKFLTPNM CSIEVIISHE ARTEKIPELP DHS
Length:683
Mass (Da):79,020
Last modified:September 22, 2009 - v2
<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:iE8955B2798B6C260
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti328L → M in AAO01013 (PubMed:12537575).Curated1
Sequence conflicti557K → E in AAO01013 (PubMed:12537575).Curated1
Sequence conflicti568 – 569EP → QL in AAO01013 (PubMed:12537575).Curated2

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
AY190941 Genomic DNA Translation: AAO01013.1
CH954179 Genomic DNA Translation: EDV56739.1

NCBI Reference Sequences

More...
RefSeqi
XP_001976339.1, XM_001976303.2

Genome annotation databases

Ensembl metazoan genome annotation project

More...
EnsemblMetazoai
FBtr0142876; FBpp0141368; FBgn0064624

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
6547312

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
der:6547312

<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
AY190941 Genomic DNA Translation: AAO01013.1
CH954179 Genomic DNA Translation: EDV56739.1
RefSeqiXP_001976339.1, XM_001976303.2

3D structure databases

SMRiQ8I1F6
ModBaseiSearch...

Protein-protein interaction databases

STRINGi7220.FBpp0141368

Genome annotation databases

EnsemblMetazoaiFBtr0142876; FBpp0141368; FBgn0064624
GeneIDi6547312
KEGGider:6547312

Phylogenomic databases

HOGENOMiCLU_012213_0_1_1
KOiK00505
OMAiKSMGFPF
OrthoDBi254693at2759
PhylomeDBiQ8I1F6

Family and domain databases

Gene3Di1.10.1280.10, 1 hit
1.20.1370.10, 1 hit
2.60.40.1520, 1 hit
InterProiView protein in InterPro
IPR013788 Hemocyanin/hexamerin
IPR000896 Hemocyanin/hexamerin_mid_dom
IPR005203 Hemocyanin_C
IPR037020 Hemocyanin_C_sf
IPR005204 Hemocyanin_N
IPR036697 Hemocyanin_N_sf
IPR014756 Ig_E-set
IPR002227 Tyrosinase_Cu-bd
IPR008922 Unchr_di-copper_centre
PANTHERiPTHR11511 PTHR11511, 1 hit
PfamiView protein in Pfam
PF03723 Hemocyanin_C, 1 hit
PF00372 Hemocyanin_M, 1 hit
PF03722 Hemocyanin_N, 1 hit
PRINTSiPR00187 HAEMOCYANIN
SUPFAMiSSF48050 SSF48050, 1 hit
SSF48056 SSF48056, 1 hit
SSF81296 SSF81296, 1 hit
PROSITEiView protein in PROSITE
PS00209 HEMOCYANIN_1, 1 hit
PS00210 HEMOCYANIN_2, 1 hit
PS00498 TYROSINASE_2, 1 hit

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 nameiPPO3_DROER
<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: Q8I1F6
Secondary accession number(s): B3NP06
<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%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: February 15, 2005
Last sequence update: September 22, 2009
Last modified: June 17, 2020
This is version 88 of the entry and version 2 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 programDrosophila annotation project

<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

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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