FUNCTION: Has an important function as a repair enzyme for proteins that have been inactivated by oxidation. Catalyzes the reversible oxidation-reduction of methionine sulfoxide in proteins to methionine (By similarity).
CATALYTIC ACTIVITY: Peptide-L-methionine + thioredoxin disulfide + H₂O = peptide-L-methionine (S)-S-oxide + thioredoxin.
CATALYTIC ACTIVITY: L-methionine + thioredoxin disulfide + H₂O = L-methionine (S)-S-oxide + thioredoxin.
SIMILARITY: Belongs to the msrA Met sulfoxide reductase family.

Copyright

Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms. Distributed under the Creative Commons Attribution-NoDerivs License.

Cross-references

Sequence databases

EMBL

AE015927; AAO34801.1; -; Genomic_DNA.

[EMBL / GenBank / DDBJ] [CoDingSequence]

RefSeq

NP_780864.1; -.

3D structure databases

HSSP

P27110; 1FF3. [HSSP ENTRY / PDB]

ModBase

Q899M3.

Enzyme and pathway databases

BioCyc

CTET212717:CTC_00149-MON; -.

Ontologies

GO:0008113;	Molecular function: peptide-methionine-(S)-S-oxide reductase activity (inferred from electronic annotation from HAMAP).
GO:0006464;	Biological process: protein modification process (inferred from electronic annotation from HAMAP).
QuickGo view.

Family and domain databases

HAMAP

MF_01401; -; 1.
PBIL [Tree]

InterPro

IPR002569; MsrA.
Graphical view of domain structure.

Gene3D

G3DSA:3.30.1060.10; MsrA; 1.

Pfam

PF01625; PMSR; 1.
Pfam graphical view of domain structure.

ProDom

PD003489; PMSR; 1.
[Domain structure / List of seq. sharing at least 1 domain]

TIGRFAMs

TIGR00401; msrA; 1.

BLOCKS

Q899M3.

Genome annotation databases

GeneID

1059201; -.

GenomeReviews

AE015927_GR; CTC_00149.

KEGG

ctc:CTC00149; -.

NMPDR

fig|212717.1.peg.86; -.

Phylogenomic databases

HOGENOM

Q899M3; -.

Genome annotation databases

CMR

Q899M3; CTC_00149.

Other

ProtoNet

Q899M3.

UniRef

View cluster of proteins with at least 50% / 90% / 100% identity.

Keywords

Complete proteome; Oxidoreductase.

Features

Feature table viewer

`Key`	`From To`	`Length`	`Description`	`FTId`
`CHAIN`	`1 164`	`164`	`Peptide methionine sulfoxide reductase msrA.`	`PRO_0000138540`
`ACT_SITE`	`16 16`		`By similarity.`

Sequence information

Length: 164 AA [This is the length of the unprocessed precursor]

Molecular weight: 19092 Da [This is the MW of the unprocessed precursor]

CRC64: 1B0A9AC6DC43C1E3 [This is a checksum on the sequence]

        10         20         30         40         50         60 
MKGVKFMKEI ILAGGCFWGV EEYFSRIYGV VDTKVGYVNG VTKNPSYEEV CNGNTGYAEG 

        70         80         90        100        110        120 
CYIKFDESII GLKRILDKFW DIIDPTILNR QGPDVGHQYR TGIYYYDKED LDDILKSKDE 

       130        140        150        160 
ISKKYDKPIV TEVEKVTYFY LAEEYHQKYL KKNPNGYCHI NLDN

Q899M3 in FASTA format

View entry in original UniProtKB/Swiss-Prot format
View entry in raw text format (no links)
Report form for errors/updates in this UniProtKB/Swiss-Prot entry

	BLAST submission on ExPASy/SIB or at NCBI (USA)		Sequence analysis tools: ProtParam, ProtScale, Compute pI/Mw, PeptideMass, PeptideCutter, Dotlet (Java)
	ScanProsite, MotifScan		Submit a homology modeling request to SWISS-MODEL
	NPSA Sequence analysis tools