Reviewed, UniProtKB/Swiss-Prot P0A9P5 (TRXB_ECO57)

Names and origin

Protein names

Recommended name:
    Thioredoxin reductase
      Short name=TRXR
    EC=1.8.1.9

Gene names

Name:	trxB
Ordered Locus Names:	Z1232, ECs0973

Organism

Escherichia coli O157:H7 [Complete proteome] [HAMAP]

Taxonomic identifier

83334 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Gammaproteobacteria › Enterobacteriales › Enterobacteriaceae › Escherichia

Protein attributes

Sequence length	321 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Inferred from homology.

General annotation (Comments)

Catalytic activity	Thioredoxin + NADP+ = thioredoxin disulfide + NADPH.
Cofactor	Binds 1 FAD per subunit By similarity.
Subunit structure	Homodimer By similarity.
Subcellular location	Cytoplasm By similarity.
Miscellaneous	The active site is a redox-active disulfide bond By similarity.
Sequence similarities	Belongs to the class-II pyridine nucleotide-disulfide oxidoreductase family.

Ontologies

Keywords
Cellular component	Cytoplasm
Domain	Redox-active center
Ligand	FAD Flavoprotein NADP
Molecular function	Oxidoreductase
PTM	Disulfide bond
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	oxidation reduction Inferred from electronic annotation. Source: UniProtKB-KW removal of superoxide radicals Inferred from electronic annotation. Source: InterPro
Cellular component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	FAD binding Inferred from electronic annotation. Source: InterPro thioredoxin-disulfide reductase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Initiator methionine	1	1	Removed By similarity
	Chain	2 – 321	320	Thioredoxin reductase		PRO_0000166730
Regions
	Nucleotide binding	36 – 43	8	FAD By similarity
	Nucleotide binding	287 – 296	10	FAD By similarity
Amino acid modifications
	Disulfide bond	136 ↔ 139		Redox-active By similarity

Sequences

	Sequence		Length	Mass (Da)
	P0A9P5-1 [UniParc]. Last modified January 23, 2007. Version 2. Checksum: 8E5AF86FB195CC82	FASTA	321	34,623
	10 20 30 40 50 60 MGTTKHSKLL ILGSGPAGYT AAVYAARANL QPVLITGMEK GGQLTTTTEV ENWPGDPNDL 70 80 90 100 110 120 TGPLLMERMH EHATKFETEI IFDHINKVDL QNRPFRLNGD NGEYTCDALI IATGASARYL 130 140 150 160 170 180 GLPSEEAFKG RGVSACATCD GFFYRNQKVA VIGGGNTAVE EALYLSNIAS EVHLIHRRDG 190 200 210 220 230 240 FRAEKILIKR LMDKVENGNI ILHTNRTLEE VTGDQMGVTG VRLRDTQNSD NIESLDVAGL 250 260 270 280 290 300 FVAIGHSPNT AIFEGQLELE NGYIKVQSGI HGNATQTSIP GVFAAGDVMD HIYRQAITSA 310 320 GTGCMAALDA ERYLDGLADA K

References

[1]	"Genome sequence of enterohaemorrhagic Escherichia coli O157:H7." Perna N.T., Plunkett G. III, Burland V., Mau B., Glasner J.D., Rose D.J., Mayhew G.F., Evans P.S., Gregor J., Kirkpatrick H.A., Posfai G., Hackett J., Klink S., Boutin A., Shao Y., Miller L., Grotbeck E.J., Davis N.W. , Lim A., Dimalanta E.T., Potamousis K., Apodaca J., Anantharaman T.S., Lin J., Yen G., Schwartz D.C., Welch R.A., Blattner F.R. Nature 409:529-533(2001) [PubMed: 11206551] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: O157:H7 / EDL933 / ATCC 700927 / EHEC.
[2]	"Complete genome sequence of enterohemorrhagic Escherichia coli O157:H7 and genomic comparison with a laboratory strain K-12." Hayashi T., Makino K., Ohnishi M., Kurokawa K., Ishii K., Yokoyama K., Han C.-G., Ohtsubo E., Nakayama K., Murata T., Tanaka M., Tobe T., Iida T., Takami H., Honda T., Sasakawa C., Ogasawara N., Yasunaga T. , Kuhara S., Shiba T., Hattori M., Shinagawa H. DNA Res. 8:11-22(2001) [PubMed: 11258796] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: O157:H7 / Sakai / RIMD 0509952 / EHEC.
+	Additional computationally mapped references.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AE005174 Genomic DNA. Translation: AAG55375.1. BA000007 Genomic DNA. Translation: BAB34396.1.
PIR	C85614. E90750.
RefSeq	NP_286765.1. NP_309000.1.
3D structure databases
SMR	P0A9P5. Positions 2-317.
ModBase	Search...
Genome annotation databases
GeneID	917715. 958846.
GenomeReviews	Gene locus Z1232 in contig AE005174_GR. Gene locus ECs0973 in contig BA000007_GR.
KEGG	ece:Z1232. ecs:ECs0973.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	HBG669726.
OMA	HCKLLIL.
Enzyme and pathway databases
BioCyc	ECOL83334:ECS0973-MONOMER.
Family and domain databases
InterPro	IPR013027. FAD_pyr_nucl-diS_OxRdtase. IPR008255. Pyr_nucl-diS_OxRdtase_2_AS. IPR001327. Pyr_OxRdtase_NAD_bd. IPR000103. Pyridine_nuc-diS_OxRdtase_2. IPR005982. Thioredox_Rdtase. [Graphical view]
Pfam	PF00070. Pyr_redox. 1 hit. PF07992. Pyr_redox_2. 1 hit. [Graphical view]
PRINTS	PR00368. FADPNR. PR00469. PNDRDTASEII.
TIGRFAMs	TIGR01292. TRX_reduct. 1 hit.
PROSITE	PS00573. PYRIDINE_REDOX_2. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

TRXB_ECO57

Accession

Primary (citable) accession number: P0A9P5
Secondary accession number(s): P09625

Entry history

Integrated into UniProtKB/Swiss-Prot:	July 19, 2005
Last sequence update:	January 23, 2007
Last modified:	February 9, 2010
This is version 38 of the entry and version 2 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)