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Q57T48 (MTNN_SALCH) Reviewed, UniProtKB/Swiss-Prot

Last modified January 25, 2012. Version 38. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
5'-methylthioadenosine/S-adenosylhomocysteine nucleosidase
Short name=MTA/SAH nucleosidase
Short name=MTAN
EC=3.2.2.9
Alternative name(s):
5'-methylthioadenosine nucleosidase
Short name=MTA nucleosidase
S-adenosylhomocysteine nucleosidase
Short name=AdoHcy nucleosidase
Short name=SAH nucleosidase
Short name=SRH nucleosidase
Gene names
Name:mtnN
Ordered Locus Names:SCH_0207
OrganismSalmonella choleraesuis [Complete proteome] [HAMAP]
Taxonomic identifier28901 [NCBI]
Taxonomic lineageBacteria › Proteobacteria › Gammaproteobacteria › Enterobacteriales › Enterobacteriaceae › Salmonella

Protein attributes

Sequence length232 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

Catalyzes the irreversible cleavage of the glycosidic bond in both 5'-methylthioadenosine (MTA) and S-adenosylhomocysteine (SAH/AdoHcy) to adenine and the corresponding thioribose, 5'-methylthioribose and S-ribosylhomocysteine, respectively By similarity. HAMAP MF_01684

Catalytic activity

S-adenosyl-L-homocysteine + H2O = S-(5-deoxy-D-ribos-5-yl)-L-homocysteine + adenine. HAMAP MF_01684

S-methyl-5'-thioadenosine + H2O = S-methyl-5-thio-D-ribose + adenine. HAMAP MF_01684

Pathway

Amino-acid biosynthesis; L-methionine biosynthesis via salvage pathway; S-methyl-5-thio-alpha-D-ribose 1-phosphate from S-methyl-5'-thioadenosine (hydrolase route): step 1/2. HAMAP MF_01684

Subunit structure

Homodimer By similarity. HAMAP MF_01684

Sequence similarities

Belongs to the PNP/UDP phosphorylase family. MtnN subfamily.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 2322325'-methylthioadenosine/S-adenosylhomocysteine nucleosidase HAMAP MF_01684
PRO_0000359328

Regions

Region173 – 1742Substrate binding By similarity

Sites

Active site121Proton acceptor By similarity
Binding site781Substrate; via amide nitrogen By similarity
Binding site1521Substrate; via amide nitrogen and carbonyl oxygen By similarity
Binding site1971Substrate By similarity

Sequences

Sequence LengthMass (Da)Tools
Q57T48 [UniParc].

Last modified May 10, 2005. Version 1.
Checksum: 9159632E712B9B36

FASTA23224,476
        10         20         30         40         50         60 
MKIGIIGAME EEVTLLRDKI DNRQTITLGG CEIYTGQLNG TEVALLKSGI GKVAAALGAT 

        70         80         90        100        110        120 
LLLEHCKPDV IINTGSAGGL ASTLKVGDIV VSDETRYHDA DVTAFGYEYG QLPGCPAGFK 

       130        140        150        160        170        180 
ADDKLIAAAE SCIRELNLNA VRGLIVSGDA FINGSVGLAK IRHNFPDAVA VEMEATAIAH 

       190        200        210        220        230 
VCHNFNVPFV VVRAISDVAD QQSHLSFDEF LAVAAKQSTL MVETLVQKLA HG

« Hide

References

[1]"The genome sequence of Salmonella enterica serovar Choleraesuis, a highly invasive and resistant zoonotic pathogen."
Chiu C.-H., Tang P., Chu C., Hu S., Bao Q., Yu J., Chou Y.-Y., Wang H.-S., Lee Y.-S.
Nucleic Acids Res. 33:1690-1698(2005) [PubMed: 15781495] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: SC-B67.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ		AE017220 Genomic DNA. Translation: AAX64113.1.
RefSeqYP_215194.1. NC_006905.1.

3D structure databases

HSSPHSSP built from PDB template 1JYS based on UniProtKB P0AF12.
ProteinModelPortalQ57T48.
SMRQ57T48. Positions 1-232.
ModBaseSearch...

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

GeneID3332619.
GenomeReviewsGene locus SCH_0207 in contig AE017220_GR.
KEGGsec:SC0207.
NMPDRfig|321314.4.peg.133.
PATRIC32320862. VBISalEnt136302_0458.

Organism-specific databases

CMRSearch...

Phylogenomic databases

HOGENOMHBG367723.
OMAVIGAMEQ.
PhylomeDBQ57T48.
ProtClustDBPRK05584.

Enzyme and pathway databases

BioCycSENT321314:SCH_0207-MONOMER.

Family and domain databases

HAMAPMF_01684. Salvage_tnN.
[Tree]
InterProIPR010049. MTA_SAH_Nsdase.
IPR018017. Nucleoside_phosphorylase.
IPR000845. Nucleoside_phosphorylase_d.
[Graphical view]
KOK01243.
PANTHERPTHR21234. PNP_UDP. 1 hit.
PTHR21234:SF6. PTHR21234:SF6. 1 hit.
PfamPF01048. PNP_UDP_1. 1 hit.
[Graphical view]
TIGRFAMsTIGR01704. MTA/SAH-Nsdase. 1 hit.
ProtoNetSearch...

Entry information

Entry nameMTNN_SALCH
AccessionPrimary (citable) accession number: Q57T48
Entry history
Integrated into UniProtKB/Swiss-Prot: January 20, 2009
Last sequence update: May 10, 2005
Last modified: January 25, 2012
This is version 38 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

PATHWAY comments

Index of metabolic and biosynthesis pathways

SIMILARITY comments

Index of protein domains and families

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