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P0A269 (PPX_SALTY) Reviewed, UniProtKB/Swiss-Prot

Last modified July 9, 2014. Version 56. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Exopolyphosphatase

Short name=ExopolyPase
EC=3.6.1.11
Alternative name(s):
Metaphosphatase
Gene names
Name:ppx
Ordered Locus Names:STM2502
OrganismSalmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720) [Reference proteome] [HAMAP]
Taxonomic identifier99287 [NCBI]
Taxonomic lineageBacteriaProteobacteriaGammaproteobacteriaEnterobacterialesEnterobacteriaceaeSalmonella

Protein attributes

Sequence length513 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceInferred from homology

General annotation (Comments)

Function

Degradation of inorganic polyphosphates. Orthophosphate is released progressively from the ends of polyphosphate of circa 500 residues long, while chains of circa 15 residues compete poorly with polyphosphate as substrate By similarity.

Catalytic activity

(Polyphosphate)(n) + H2O = (polyphosphate)(n-1) + phosphate.

Cofactor

Magnesium By similarity.

Subunit structure

Homodimer By similarity.

Subcellular location

Cell membrane; Peripheral membrane protein By similarity.

Sequence similarities

Belongs to the GppA/Ppx family.

Ontologies

Keywords
   Cellular componentCell membrane
Membrane
   LigandMagnesium
   Molecular functionHydrolase
   Technical termComplete proteome
Reference proteome
Gene Ontology (GO)
   Biological_processpolyphosphate catabolic process

Inferred from electronic annotation. Source: InterPro

   Cellular_componentplasma membrane

Inferred from electronic annotation. Source: UniProtKB-SubCell

   Molecular_functionexopolyphosphatase activity

Inferred from electronic annotation. Source: UniProtKB-EC

magnesium ion binding

Inferred from electronic annotation. Source: InterPro

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Initiator methionine11Removed By similarity
Chain2 – 513512Exopolyphosphatase
PRO_0000194305

Sequences

Sequence LengthMass (Da)Tools
P0A269 [UniParc].

Last modified January 23, 2007. Version 2.
Checksum: 02ACBA7895F2ED6D

FASTA51358,145
        10         20         30         40         50         60 
MPIYDKSPRP QEFAAVDLGS NSFHMVIARV VDGAMQIIGR LKQRVHLADG LGADNKLSEE 

        70         80         90        100        110        120 
AMERGLSCLS LFAERLQGFS PSSVCIVGTH TLRQAQNAAD FLKRAEKVIP YPIEIISGNE 

       130        140        150        160        170        180 
EARLIFMGVE HTQPEKGRKL VIDIGGGSTE LVIGENFEPR LVESRRMGCV SFAQLYFPGG 

       190        200        210        220        230        240 
VINKENFQRA RMAAAQKLET LTWQYRIQGW NVAMGASGTI KAAHEVLLAL GEKDGFITPE 

       250        260        270        280        290        300 
RLDKLKSEVL KHRSFNALSL PGLSEERKAV FVPGLAILCG VFDALAIREL RLSDGALREG 

       310        320        330        340        350        360 
VLYEMEGRFR HQDVRSRTAK SLANQYNIDR EQARRVLETT MQMYEQWQAQ QPKLAHPQLE 

       370        380        390        400        410        420 
ALLRWAAMLH EVGLNINHSG LHRHSAYILQ HSDLPGFNQE QQMMMATLVR YHRKAIKLDD 

       430        440        450        460        470        480 
MPRFTLFKKK QYLPLIQLLR LGVLLNNQRQ ATTTPPTLRL TTDDSHWTLC FPHDWFSQNA 

       490        500        510 
LVLLDLEKEQ QYWEAVTGWR LNIEEESSPE IAA 

« Hide

References

« Hide 'large scale' references
[1]"Polyphosphate kinase (ppk) and exopolyphosphatase (ppx) genes in Salmonella typhimurium."
Kim K.S., Fraley C.D., Kornberg A.
Submitted (AUG-1998) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
Strain: WRAY.
[2]"Complete genome sequence of Salmonella enterica serovar Typhimurium LT2."
McClelland M., Sanderson K.E., Spieth J., Clifton S.W., Latreille P., Courtney L., Porwollik S., Ali J., Dante M., Du F., Hou S., Layman D., Leonard S., Nguyen C., Scott K., Holmes A., Grewal N., Mulvaney E. expand/collapse author list , Ryan E., Sun H., Florea L., Miller W., Stoneking T., Nhan M., Waterston R., Wilson R.K.
Nature 413:852-856(2001) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: LT2 / SGSC1412 / ATCC 700720.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
AF085682 Genomic DNA. Translation: AAC34891.1.
AE006468 Genomic DNA. Translation: AAL21396.1.
RefSeqNP_461437.1. NC_003197.1.

3D structure databases

ProteinModelPortalP0A269.
SMRP0A269. Positions 11-506.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING99287.STM2502.

Proteomic databases

PaxDbP0A269.
PRIDEP0A269.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaAAL21396; AAL21396; STM2502.
GeneID1254024.
KEGGstm:STM2502.
PATRIC32383637. VBISalEnt20916_2641.

Phylogenomic databases

eggNOGCOG0248.
HOGENOMHOG000258672.
KOK01524.
OMAENNKLLH.
OrthoDBEOG6M6JN6.
PhylomeDBP0A269.

Enzyme and pathway databases

BioCycSENT99287:GCTI-2518-MONOMER.

Family and domain databases

InterProIPR022371. Exopolyphosphatase.
IPR003695. Ppx_GppA.
[Graphical view]
PfamPF02541. Ppx-GppA. 1 hit.
[Graphical view]
TIGRFAMsTIGR03706. exo_poly_only. 1 hit.
ProtoNetSearch...

Entry information

Entry namePPX_SALTY
AccessionPrimary (citable) accession number: P0A269
Secondary accession number(s): O86091
Entry history
Integrated into UniProtKB/Swiss-Prot: March 15, 2005
Last sequence update: January 23, 2007
Last modified: July 9, 2014
This is version 56 of the entry and version 2 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families