Reviewed, UniProtKB/Swiss-Prot Q9W1V6 (PRPA3_DROME)

Names and origin

Protein names

Recommended name:
    Phenoloxidase subunit A3
    EC=1.14.18.1
Alternative name(s):
    Tyrosinase A3
    PO A3

Gene names

Name:	Dox-A3
Synonyms:	Dox-3
ORF Names:	CG2952

Organism

Drosophila melanogaster (Fruit fly) [Complete proteome]

Taxonomic identifier

7227 [NCBI]

Taxonomic lineage

Eukaryota › Metazoa › Arthropoda › Hexapoda › Insecta › Pterygota › Neoptera › Endopterygota › Diptera › Brachycera › Muscomorpha › Ephydroidea › Drosophilidae › Drosophila › Sophophora

Protein attributes

Sequence length	683 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at protein level.

General annotation (Comments)

Function	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 quinon.
Catalytic activity	L-tyrosine + L-dopa + O2 = L-dopa + dopaquinone + H2O.
Cofactor	Binds 2 copper ions per subunit By similarity. Ref.4 Ref.1 UniProtKB Q27451
Subcellular location	Secreted By similarity. UniProtKB Q9V521
Post-translational modification	Upon activation a trypsin type proteases cleaves prophenol oxidase to yield the active enzyme. Ref.4 Ref.1 UniProtKB Q27451
Sequence similarities	Belongs to the tyrosinase family.
Sequence caution	The sequence BAB43866.1 differs from that shown. Reason: Miscellaneous discrepancy. Chimeric cDNA. It is a chimera between Dox-A3 and CG8193.

Ontologies

Keywords
Biological process	Melanin biosynthesis
Cellular component	Secreted
Ligand	Copper Metal-binding
Molecular function	Monooxygenase Oxidoreductase
PTM	Cleavage on pair of basic residues Glycoprotein Zymogen
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	melanin biosynthetic process from tyrosine Inferred from electronic annotation. Source: UniProtKB-KW oxidation reduction Inferred from electronic annotation. Source: UniProtKB-KW transport Inferred from electronic annotation. Source: InterPro
Cellular component	extracellular region Ref.4 Inferred from direct assay. Source: UniProtKB
Molecular function	copper ion binding Inferred from electronic annotation. Source: UniProtKB-KW monophenol monooxygenase activity Traceable author statement. Source: FlyBase oxygen transporter activity Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Propeptide	1 – 50	50	By similarity UniProtKB Q9V521		PRO_0000035905
	Chain	51 – 683	633	Phenoloxidase subunit A3 Ref.4 Ref.1 UniProtKB Q27451		PRO_0000035906
Sites
	Metal binding	209	1	Copper A By similarity Ref.4 Ref.1 UniProtKB Q27451
	Metal binding	213	1	Copper A By similarity Ref.4 Ref.1 UniProtKB Q27451
	Metal binding	239	1	Copper A By similarity Ref.4 Ref.1 UniProtKB Q27451
	Metal binding	366	1	Copper B By similarity Ref.4 Ref.1 UniProtKB Q27451
	Metal binding	370	1	Copper B By similarity Ref.4 Ref.1 UniProtKB Q27451
	Metal binding	406	1	Copper B By similarity Ref.4 Ref.1 UniProtKB Q27451
Amino acid modifications
	Glycosylation	358	1	N-linked (GlcNAc...) Potential
	Glycosylation	492	1	N-linked (GlcNAc...) Potential
	Glycosylation	546	1	N-linked (GlcNAc...) Potential

Sequences

	Sequence		Length	Mass (Da)
	Q9W1V6-1 [UniParc]. Last modified May 1, 2000. Version 1. Checksum: 437CBDD9E8A278BF	FASTA	683	79,314
	10 20 30 40 50 60 MADKKNLLLL FDHPTEPVFM DKGGNGTVFD VPDSYVTDRY NQMCKKVQRR VSSASEKNVQ 70 80 90 100 110 120 VKEIAIPDLS CSMRLGRSEQ FSIFLKSHRK MASHLIEIFT KMQTVDELQS VAVYARDRVN 130 140 150 160 170 180 PVLFNYALSV ALLHRPDTKD LELPAFAQTF PDRFIDSKML RSMREESFVV ERSAARLPVV 190 200 210 220 230 240 SSVKYTASDL DVEHRLWYFR EDLGVNLHHW HWHLVYPIEA PDRSIVDKDR RGELFYYMHQ 250 260 270 280 290 300 QIIARYNAER LSNHMARVQP FNNLDEPIAE GYFPKMDSLV ASRAYPPRFD NTRLSDVDRP 310 320 330 340 350 360 NNQLRVGIDD MKRWRERIYE AIHQGYVLDT NNEKIVLDDA KGIDILGNII EASDLTPNST 370 380 390 400 410 420 LYGDFHNMGH ILIAYSHDPT NKHLEYAGVM GDASTAMRDP IFYKWHAFID NMFQEHKRLL 430 440 450 460 470 480 SPYEKQELSF PDVRVESIQV ESQGQVNRLT TFWQESDVDM SRGLDFVPRG HVLARFTHLQ 490 500 510 520 530 540 HHEFSYTIKV ENSSEATRYG YVRIFLAPKL DDRNAPMLLE QQRLMMVELD KFVVTMPPGS 550 560 570 580 590 600 HTITRNSTES SVTIPFERTF RNLDKLEELQ NFLCGCGWPQ HMLIPKGRPE GLRFELFVMV 610 620 630 640 650 660 SNYEEDKVDQ TVADCGCSIA ASYCGLRDRL YPDRKSMGFP FDRKPRRGSE ILENFLTPNM 670 680 CAVEVIITHE DRTEKLREVP ARS

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"The genome sequence of Drosophila melanogaster." Adams M.D., Celniker S.E., Holt R.A., Evans C.A., Gocayne J.D., Amanatides P.G., Scherer S.E., Li P.W., Hoskins R.A., Galle R.F., George R.A., Lewis S.E., Richards S., Ashburner M., Henderson S.N., Sutton G.G., Wortman J.R., Yandell M.D. , Zhang Q., Chen L.X., Brandon R.C., Rogers Y.-H.C., Blazej R.G., Champe M., Pfeiffer B.D., Wan K.H., Doyle C., Baxter E.G., Helt G., Nelson C.R., Miklos G.L.G., Abril J.F., Agbayani A., An H.-J., Andrews-Pfannkoch C., Baldwin D., Ballew R.M., Basu A., Baxendale J., Bayraktaroglu L., Beasley E.M., Beeson K.Y., Benos P.V., Berman B.P., Bhandari D., Bolshakov S., Borkova D., Botchan M.R., Bouck J., Brokstein P., Brottier P., Burtis K.C., Busam D.A., Butler H., Cadieu E., Center A., Chandra I., Cherry J.M., Cawley S., Dahlke C., Davenport L.B., Davies P., de Pablos B., Delcher A., Deng Z., Mays A.D., Dew I., Dietz S.M., Dodson K., Doup L.E., Downes M., Dugan-Rocha S., Dunkov B.C., Dunn P., Durbin K.J., Evangelista C.C., Ferraz C., Ferriera S., Fleischmann W., Fosler C., Gabrielian A.E., Garg N.S., Gelbart W.M., Glasser K., Glodek A., Gong F., Gorrell J.H., Gu Z., Guan P., Harris M., Harris N.L., Harvey D.A., Heiman T.J., Hernandez J.R., Houck J., Hostin D., Houston K.A., Howland T.J., Wei M.-H., Ibegwam C., Jalali M., Kalush F., Karpen G.H., Ke Z., Kennison J.A., Ketchum K.A., Kimmel B.E., Kodira C.D., Kraft C.L., Kravitz S., Kulp D., Lai Z., Lasko P., Lei Y., Levitsky A.A., Li J.H., Li Z., Liang Y., Lin X., Liu X., Mattei B., McIntosh T.C., McLeod M.P., McPherson D., Merkulov G., Milshina N.V., Mobarry C., Morris J., Moshrefi A., Mount S.M., Moy M., Murphy B., Murphy L., Muzny D.M., Nelson D.L., Nelson D.R., Nelson K.A., Nixon K., Nusskern D.R., Pacleb J.M., Palazzolo M., Pittman G.S., Pan S., Pollard J., Puri V., Reese M.G., Reinert K., Remington K., Saunders R.D.C., Scheeler F., Shen H., Shue B.C., Siden-Kiamos I., Simpson M., Skupski M.P., Smith T.J., Spier E., Spradling A.C., Stapleton M., Strong R., Sun E., Svirskas R., Tector C., Turner R., Venter E., Wang A.H., Wang X., Wang Z.-Y., Wassarman D.A., Weinstock G.M., Weissenbach J., Williams S.M., Woodage T., Worley K.C., Wu D., Yang S., Yao Q.A., Ye J., Yeh R.-F., Zaveri J.S., Zhan M., Zhang G., Zhao Q., Zheng L., Zheng X.H., Zhong F.N., Zhong W., Zhou X., Zhu S.C., Zhu X., Smith H.O., Gibbs R.A., Myers E.W., Rubin G.M., Venter J.C. Science 287:2185-2195(2000) [PubMed: 10731132] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: Berkeley.
[2]	"Annotation of the Drosophila melanogaster euchromatic genome: a systematic review." Misra S., Crosby M.A., Mungall C.J., Matthews B.B., Campbell K.S., Hradecky P., Huang Y., Kaminker J.S., Millburn G.H., Prochnik S.E., Smith C.D., Tupy J.L., Whitfield E.J., Bayraktaroglu L., Berman B.P., Bettencourt B.R., Celniker S.E., de Grey A.D.N.J. , Drysdale R.A., Harris N.L., Richter J., Russo S., Schroeder A.J., Shu S.Q., Stapleton M., Yamada C., Ashburner M., Gelbart W.M., Rubin G.M., Lewis S.E. Genome Biol. 3:RESEARCH0083.1-RESEARCH0083.22(2002) [PubMed: 12537572] [Abstract] Cited for: GENOME REANNOTATION.
[3]	"A Drosophila full-length cDNA resource." Stapleton M., Carlson J.W., Brokstein P., Yu C., Champe M., George R.A., Guarin H., Kronmiller B., Pacleb J.M., Park S., Wan K.H., Rubin G.M., Celniker S.E. Genome Biol. 3:RESEARCH0080.1-RESEARCH0080.8(2002) [PubMed: 12537569] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Strain: Berkeley. Tissue: Embryo.
[4]	"Prophenol oxidase A3 in Drosophila melanogaster: activation and the PCR-based cDNA sequence." Asada N., Yokoyama G., Kawamoto N., Norioka S., Hatta T. Biochem. Genet. 41:151-163(2003) [PubMed: 12834045] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1-664, PROTEOLYTIC CLEAVAGE. Strain: Oregon-R. Tissue: Larva and Pupae.
+	Additional computationally mapped references.

Cross-references

Sequence databases
EMBLGenBankDDBJ	AE013599 Genomic DNA. Translation: AAF46946.1. AY061624 mRNA. Translation: AAL29172.1. AB055857 Genomic DNA. Translation: BAB43866.1. Sequence problems.
RefSeq	NP_524760.1.
UniGene	Dm.1829
3D structure databases
HSSP	HSSP built from PDB template 1OXY based on UniProtKB P04253.
ModBase	Search...
Proteomic databases
PRIDE	Q9W1V6.
Genome annotation databases
Ensembl	FBgn0000487. Drosophila melanogaster. [Contig view]
GeneID	44513.
KEGG	dme:Dmel_CG2952.
NMPDR	fig|7227.3.peg.6976.
Organism-specific databases
FlyBase	FBgn0000487. Dox-A3.
Phylogenomic databases
HOGENOM	Q9W1V6.
Enzyme and pathway databases
BRENDA	1.14.18.1. 48.
Gene expression databases
ArrayExpress	Q9W1V6.
GermOnline	CG2952. Drosophila melanogaster.
Family and domain databases
InterPro	IPR008922. Di-copper_centre. IPR013788. Hemocyanin. IPR005203. Hemocyanin_C. IPR000896. Hemocyanin_Cu. IPR005204. Hemocyanin_N. IPR002227. Tyrosinase. [Graphical view]
Gene3D	G3DSA:1.10.1280.10. Di-copper_centre. 1 hit. G3DSA:2.60.40.1520. hemocyanin_C. 1 hit. G3DSA:1.20.1370.10. hemocyanin_N. 1 hit.
PANTHER	PTHR11511. Hemocyanin. 1 hit.
Pfam	PF03723. Hemocyanin_C. 1 hit. PF00372. Hemocyanin_M. 1 hit. PF03722. Hemocyanin_N. 1 hit. [Graphical view]
PRINTS	PR00187. HAEMOCYANIN.
PROSITE	PS00209. HEMOCYANIN_1. 1 hit. PS00210. HEMOCYANIN_2. 1 hit. PS00497. TYROSINASE_1. False negative. PS00498. TYROSINASE_2. 1 hit. [Graphical view]
ProtoNet	Search...
Other Resources
NextBio	837357.

Entry information

Entry name

PRPA3_DROME

Accession

Primary (citable) accession number: Q9W1V6
Secondary accession number(s): Q95R43, Q9BLD9

Entry history

Integrated into UniProtKB/Swiss-Prot:	February 15, 2005
Last sequence update:	May 1, 2000
Last modified:	June 16, 2009
This is version 53 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

Drosophila annotation project