Reviewed, UniProtKB/Swiss-Prot P0A0B5 (AHPC_STAAM)

Names and origin

Protein names

Recommended name:
    Alkyl hydroperoxide reductase subunit C
    EC=1.11.1.15
Alternative name(s):
    Peroxiredoxin
    Thioredoxin peroxidase

Gene names

Name:	ahpC
Ordered Locus Names:	SAV0381

Organism

Staphylococcus aureus (strain Mu50 / ATCC 700699) [Complete proteome] [HAMAP]

Taxonomic identifier

158878 [NCBI]

Taxonomic lineage

Bacteria › Firmicutes › Bacillales › Staphylococcus

Protein attributes

Sequence length	189 AA.
Sequence status	Complete.
Protein existence	Evidence at protein level.

General annotation (Comments)

Function	Directly reduces organic hydroperoxides in its reduced dithiol form By similarity.
Catalytic activity	2 R'-SH + ROOH = R'-S-S-R' + H2O + ROH.
Subunit structure	Homodimer; disulfide-linked, upon oxidation By similarity.
Post-translational modification	The Cys-49-SH group is the primary site of oxidation by H2O2, and the oxidized Cys-49 (probably Cys-SOH) rapidly reacts with Cys-168-SH of the other subunit to form an intermolecular disulfide. This disulfide is subsequently reduced by thioredoxin By similarity.
Sequence similarities	Belongs to the ahpC/TSA family. Contains 1 thioredoxin domain.

Ontologies

Keywords
Domain	Redox-active center
Molecular function	Antioxidant Oxidoreductase Peroxidase
PTM	Disulfide bond
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	cell redox homeostasis Inferred from electronic annotation. Source: InterPro oxidation reduction Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	peroxiredoxin 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
	Chain	1 – 189	189	Alkyl hydroperoxide reductase subunit C		PRO_0000135123
Regions
	Domain	2 – 159	158	Thioredoxin
Sites
	Active site	49	1	Cysteine sulfenic acid (-SOH) intermediate By similarity
Amino acid modifications
	Disulfide bond	49		Interchain (with C-168); in linked form By similarity
	Disulfide bond	168		Interchain (with C-49); in linked form By similarity

Sequences

	Sequence		Length	Mass (Da)
	P0A0B5-1 [UniParc]. Last modified March 1, 2005. Version 1. Checksum: B7134A9C84066B73	FASTA	189	20,977
	10 20 30 40 50 60 MSLINKEILP FTAQAFDPKK DQFKEVTQED LKGSWSVVCF YPADFSFVCP TELEDLQNQY 70 80 90 100 110 120 EELQKLGVNV FSVSTDTHFV HKAWHDHSDA ISKITYTMIG DPSQTITRNF DVLDEATGLA 130 140 150 160 170 180 QRGTFIIDPD GVVQASEINA DGIGRDASTL AHKIKAAQYV RKNPGEVCPA KWEEGAKTLQ PGLDLVGKI

References

[1]

"Whole genome sequencing of meticillin-resistant Staphylococcus aureus." Kuroda M., Ohta T., Uchiyama I., Baba T., Yuzawa H., Kobayashi I., Cui L., Oguchi A., Aoki K., Nagai Y., Lian J.-Q., Ito T., Kanamori M., Matsumaru H., Maruyama A., Murakami H., Hosoyama A., Mizutani-Ui Y. , Takahashi N.K., Sawano T., Inoue R., Kaito C., Sekimizu K., Hirakawa H., Kuhara S., Goto S., Yabuzaki J., Kanehisa M., Yamashita A., Oshima K., Furuya K., Yoshino C., Shiba T., Hattori M., Ogasawara N., Hayashi H., Hiramatsu K. Lancet 357:1225-1240(2001) [PubMed: 11418146] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBL GenBank DDBJ	BA000017 Genomic DNA. Translation: BAB56543.1.
RefSeq	NP_370905.1.
3D structure databases
SMR	P0A0B5. Positions 2-168.
ModBase	Search...
Protein-protein interaction databases
STRING	P0A0B5.
2-D gel databases
World-2DPAGE	0002:P0A0B5.
Genome annotation databases
GeneID	1120338.
GenomeReviews	Gene locus SAV0381 in contig BA000017_GR.
KEGG	sav:SAV0381.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG0450.
HOGENOM	HBG493509.
OMA	GDLADHY.
Enzyme and pathway databases
BioCyc	SAUR158878:SAV0381-MONOMER.
Family and domain databases
InterPro	IPR000866. Alkyl_hydroperoxide_Rdtase. IPR017559. Peroxiredoxin. IPR019479. Peroxiredoxin_C. IPR017936. Thioredoxin-like. IPR012336. Thioredoxin-like_fold. IPR012335. Thioredoxin_fold. [Graphical view]
Gene3D	G3DSA:3.40.30.10. Thioredoxin_fold. 1 hit.
Pfam	PF10417. 1-cysPrx_C. 1 hit. PF00578. AhpC-TSA. 1 hit. [Graphical view]
TIGRFAMs	TIGR03137. AhpC. 1 hit.
PROSITE	PS51352. THIOREDOXIN_2. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

AHPC_STAAM

Accession

Primary (citable) accession number: P0A0B5
Secondary accession number(s): Q53647

Entry history

Integrated into UniProtKB/Swiss-Prot:	March 1, 2005
Last sequence update:	March 1, 2005
Last modified:	February 9, 2010
This is version 32 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

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