A3NS55 (T23O_BURP0) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Tryptophan 2,3-dioxygenase
Short name=TDO
EC=1.13.11.11

Alternative name(s):
Tryptamin 2,3-dioxygenase
Tryptophan oxygenase
Short name=TO
Short name=TRPO
Tryptophan pyrrolase
Tryptophanase

Gene names

Name:	kynA
Ordered Locus Names:	BURPS1106A_0895

Organism

Burkholderia pseudomallei (strain 1106a) [Complete proteome] [HAMAP]

Taxonomic identifier

357348 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Betaproteobacteria › Burkholderiales › Burkholderiaceae › Burkholderia › pseudomallei group

Protein attributes

Sequence length	306 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Catalyzes the oxidative cleavage of the L-tryptophan (L-Trp) pyrrole ring By similarity.
Catalytic activity	L-tryptophan + O2 = N-formyl-L-kynurenine.
Cofactor	Binds 2 heme groups per tetramer By similarity.
Pathway	Amino-acid degradation; L-tryptophan degradation via kynurenine pathway; L-kynurenine from L-tryptophan: step 1/2.
Subunit structure	Homotetramer By similarity.
Sequence similarities	Belongs to the tryptophan 2,3-dioxygenase family.
Sequence caution	The sequence ABN89254.1 differs from that shown. Reason: Erroneous initiation.

Ontologies

Keywords
Biological process	Tryptophan catabolism
Ligand	Heme Iron Metal-binding
Molecular function	Dioxygenase Oxidoreductase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	protein homotetramerization Inferred from sequence or structural similarity. Source: UniProtKB tryptophan catabolic process to kynurenine Inferred from sequence or structural similarity. Source: UniProtKB
Molecular function	heme binding Inferred from sequence or structural similarity. Source: UniProtKB tryptophan 2,3-dioxygenase activity Inferred from sequence or structural similarity. Source: UniProtKB
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 306	306	Tryptophan 2,3-dioxygenase		PRO_0000360107
Regions
	Region	50 – 54	5	Substrate binding By similarity
	Region	75 – 79	5	Substrate binding By similarity
Sites
	Metal binding	264	1	Iron (heme axial ligand) By similarity
	Binding site	137	1	Substrate By similarity
	Binding site	141	1	Substrate By similarity
	Binding site	148	1	Heme By similarity
	Binding site	278	1	Substrate By similarity

Sequences

	Sequence		Length	Mass (Da)
	A3NS55 [UniParc]. Last modified January 20, 2009. Version 2. Checksum: 2C27E8FCE42E6F7C	FASTA	306	34,813
	10 20 30 40 50 60 MQPPGDDAAP RCPFAGAHAP DAPHVPEAAG DDAQAGWHRA QLDFSQSMSY GDYLSLDPIL 70 80 90 100 110 120 DAQHPRSPDH NEMLFIIQHQ TSELWMKLAL YELRAALASI RDDALPPAFK MLARVSRVLE 130 140 150 160 170 180 QLVQAWNVLA TMTPSEYSAM RPYLGASSGF QSYQYRELEF ILGNKNAQML RPHAHRPAIH 190 200 210 220 230 240 AHLEASLQAP SLYDEVIRLL ARRGFPIAPE RLDADWTQPT RHDRTVEAAW LAVYREPNAH 250 260 270 280 290 300 WELYEMAEEL VDLEDAFRQW RFRHVTTVER IIGFKQGTGG TSGAPYLRKM LDVVLFPELW HVRTTL

References

[1]	DeShazer D., Woods D.E., Nierman W.C. Submitted (FEB-2007) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: 1106a.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000572 Genomic DNA. Translation: ABN89254.1. Different initiation.
RefSeq	YP_001065176.1. NC_009076.1.
3D structure databases
ProteinModelPortal	A3NS55.
SMR	A3NS55. Positions 46-306.
ModBase	Search...
Protein-protein interaction databases
STRING	A3NS55.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	4901157.
GenomeReviews	Gene locus BURPS1106A_0895 in contig CP000572_GR.
KEGG	bpl:BURPS1106A_0895.
PATRIC	19220346. VBIBurPse14980_0857.
TIGR	BURPS1106A_0895.
Phylogenomic databases
eggNOG	COG3483.
HOGENOM	HBG647485.
ProtClustDB	CLSK2391472.
Family and domain databases
InterPro	IPR017485. Trp_2-3-dOase_bac. IPR004981. Trp_2_3_dOase. [Graphical view]
KO	K00453.
PANTHER	PTHR10138. Trp_2_3_dOase. 1 hit.
Pfam	PF03301. Trp_dioxygenase. 1 hit. [Graphical view]
TIGRFAMs	TIGR03036. Trp_2_3_diox. 1 hit.
ProtoNet	Search...

Entry information

Entry name

T23O_BURP0

Accession

Primary (citable) accession number: A3NS55

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 20, 2009
Last sequence update:	January 20, 2009
Last modified:	December 14, 2011
This is version 34 of the entry and version 2 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program