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2.A.17.3.8
The germinating pollen dipeptide/tripeptide transporter, PTR5 (Komarova et al., 2008). Transport is electrogenic and dependent on protons. Leak currents are inhibited by Phe-Ala when this peptide binds at the active site with high affinity (Hammes et al., 2010).

Accession Number:Q9LFB8
Protein Name:Peptide transporter PTR5
Length:570
Molecular Weight:63308.00
Species: [3702]
Number of TMSs:11
Location1 / Topology2 / Orientation3: Cell membrane1 / Multi-pass membrane protein2
Substrate dipeptides, tripeptides

Cross database links:

Genevestigator: Q9LFB8
RefSeq: NP_195738.1   
Entrez Gene ID: 831725   
Pfam: PF00854   
KEGG: ath:AT5G01180   

Gene Ontology

GO:0016021 C:integral to membrane
GO:0005886 C:plasma membrane
GO:0042936 F:dipeptide transporter activity
GO:0042938 P:dipeptide transport
GO:0009860 P:pollen tube growth
GO:0015031 P:protein transport

References (3)

[1] “Sequence and analysis of chromosome 5 of the plant Arabidopsis thaliana.”  Tabata S.et.al.   11130714
[2] “Empirical analysis of transcriptional activity in the Arabidopsis genome.”  Yamada K.et.al.   14593172
[3] “AtPTR1 and AtPTR5 transport dipeptides in planta.”  Komarova N.Y.et.al.   18753286

External Searches:

  • Search: DB with
  • BLAST ExPASy (Swiss Institute of Bioinformatics (SIB) BLAST)
  • CDD Search (Conserved Domain Database)
  • Search COGs (Clusters of Orthologous Groups of proteins)
  • 2° Structure (Network Protein Sequence Analysis)

Analyze:

Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MEDDKDIYTK DGTLDIHKKP ANKNKTGTWK ACRFILGTEC CERLAYYGMS TNLINYLEKQ 
61:	MNMENVSASK SVSNWSGTCY ATPLIGAFIA DAYLGRYWTI ASFVVIYIAG MTLLTISASV 
121:	PGLTPTCSGE TCHATAGQTA ITFIALYLIA LGTGGIKPCV SSFGADQFDD TDEKEKESKS 
181:	SFFNWFYFVI NVGAMIASSV LVWIQMNVGW GWGLGVPTVA MAIAVVFFFA GSNFYRLQKP 
241:	GGSPLTRMLQ VIVASCRKSK VKIPEDESLL YENQDAESSI IGSRKLEHTK ILTFFDKAAV 
301:	ETESDNKGAA KSSSWKLCTV TQVEELKALI RLLPIWATGI VFASVYSQMG TVFVLQGNTL 
361:	DQHMGPNFKI PSASLSLFDT LSVLFWAPVY DKLIVPFARK YTGHERGFTQ LQRIGIGLVI 
421:	SIFSMVSAGI LEVARLNYVQ THNLYNEETI PMTIFWQVPQ YFLVGCAEVF TFIGQLEFFY 
481:	DQAPDAMRSL CSALSLTAIA FGNYLSTFLV TLVTKVTRSG GRPGWIAKNL NNGHLDYFFW 
541:	LLAGLSFLNF LVYLWIAKWY TYKKTTGHAL