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P40260 (MEP1_YEAST) Reviewed, UniProtKB/Swiss-Prot

Last modified May 1, 2013. Version 107. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (3) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Interactions·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
to top of pageNames·Attributes·General annotation·Ontologies·Interactions·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Ammonium transporter MEP1
Gene names
Name:MEP1
Synonyms:AMT1
Ordered Locus Names:YGR121C
ORF Names:G6331
OrganismSaccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) [Reference proteome]
Taxonomic identifier559292 [NCBI]
Taxonomic lineageEukaryota › Fungi › Dikarya › Ascomycota › Saccharomycotina › Saccharomycetes › Saccharomycetales › Saccharomycetaceae › Saccharomyces ›

Protein attributes

Sequence length492 AA.
Sequence statusComplete.
Protein existenceEvidence at protein level

General annotation (Comments)

Function

Transporter for ammonium (both charged and uncharged NH3 and NH4) to use as a nitrogen source. Can also transport methylamine. The affinity of MEP1 is about twenty times lower than that of MEP2. MEP3 has the lowest affinity. Ref.5 Ref.6

Subcellular location

Membrane; Multi-pass membrane protein.

Sequence similarities

Belongs to the ammonia transporter channel (TC 1.A.11.2) family. [View classification]

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 492492Ammonium transporter MEP1
PRO_0000139754

Regions

Topological domain1 – 1818Extracellular Potential
Transmembrane19 – 3921Helical; Potential
Topological domain40 – 4910Cytoplasmic Potential
Transmembrane50 – 7021Helical; Potential
Topological domain71 – 10939Extracellular Potential
Transmembrane110 – 13021Helical; Potential
Topological domain131 – 14010Cytoplasmic Potential
Transmembrane141 – 16121Helical; Potential
Topological domain162 – 17413Extracellular Potential
Transmembrane175 – 19521Helical; Potential
Topological domain196 – 21015Cytoplasmic Potential
Transmembrane211 – 23121Helical; Potential
Topological domain232 – 2409Extracellular Potential
Transmembrane241 – 26121Helical; Potential
Topological domain262 – 2687Cytoplasmic Potential
Transmembrane269 – 28921Helical; Potential
Topological domain2901Extracellular Potential
Transmembrane291 – 31121Helical; Potential
Topological domain312 – 33120Cytoplasmic Potential
Transmembrane332 – 35221Helical; Potential
Topological domain353 – 37321Extracellular Potential
Transmembrane374 – 39421Helical; Potential
Topological domain395 – 49298Cytoplasmic Potential

Sequences

Sequence LengthMass (Da)Tools
P40260 [UniParc].

Last modified February 1, 1995. Version 1.
Checksum: CC7DF0EB838D0B77

FASTA49254,202
        10         20         30         40         50         60 
MESRTTGPLT TETYDGPTVA FMILGAALVF FMVPGLGFLY SGLARRKSAL ALIWVVLMAT 

        70         80         90        100        110        120 
LVGILQWYFW GYSLAFSKSA PNNKFIGNLD SFGFRNVYGK KFDEDAYPEL AYATFQMMFS 

       130        140        150        160        170        180 
CVNLSIIAGA TAERGRLLPH MVFLFILATI GYCPVTYWIW SPGGWAYQWG VLDWAGGGNI 

       190        200        210        220        230        240 
EILSAVSGFV YSWFLGKRNE KLLINFRPHN VSLVTLGTSI LWFGWLLFNS ASSLSPNLRS 

       250        260        270        280        290        300 
VYAFMNTCLS AITGGMTWCL LDYRSEKKWS TVGLCSGIIS GLVAATPSSG CITLYGSLIQ 

       310        320        330        340        350        360 
GIVAGVVCNF ATKLKYYAKV DDAMDILAEH GVAGVIGLIF NALFGADWVI GMDGTTEHEG 

       370        380        390        400        410        420 
GWVTHNYKQM YKQIAYIAAS IGYTAAVTAI ICFVLGYIPG MRLRISEEAE EAGMDEDQIG 

       430        440        450        460        470        480 
EFAYDYVEVR RDYYLWGVDE DSQRSDVNHR VNNAHLAAER SSSGTNSSSD GNGEMIQSEK 

       490 
ILPIHQEDPA NR

« Hide

References

« Hide 'large scale' references
[1]"Cloning and expression of the MEP1 gene encoding an ammonium transporter in Saccharomyces cerevisiae."
Marini A.-M., Vissers S., Urrestarazu A., Andre B.
EMBO J. 13:3456-3463(1994) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
Strain: Sigma 1278B.
[2]"An 18.3 kb DNA fragment from yeast chromosome VII carries four unknown open reading frames, the gene for an Asn synthase, remnants of Ty and three tRNA genes."
van Dyck L., Tettelin H., Purnelle B., Goffeau A.
Yeast 13:171-176(1997) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
Strain: ATCC 96604 / S288c / FY1679.
[3]"The nucleotide sequence of Saccharomyces cerevisiae chromosome VII."
Tettelin H., Agostoni-Carbone M.L., Albermann K., Albers M., Arroyo J., Backes U., Barreiros T., Bertani I., Bjourson A.J., Brueckner M., Bruschi C.V., Carignani G., Castagnoli L., Cerdan E., Clemente M.L., Coblenz A., Coglievina M., Coissac E. expand/collapse author list , Defoor E., Del Bino S., Delius H., Delneri D., de Wergifosse P., Dujon B., Durand P., Entian K.-D., Eraso P., Escribano V., Fabiani L., Fartmann B., Feroli F., Feuermann M., Frontali L., Garcia-Gonzalez M., Garcia-Saez M.I., Goffeau A., Guerreiro P., Hani J., Hansen M., Hebling U., Hernandez K., Heumann K., Hilger F., Hofmann B., Indge K.J., James C.M., Klima R., Koetter P., Kramer B., Kramer W., Lauquin G., Leuther H., Louis E.J., Maillier E., Marconi A., Martegani E., Mazon M.J., Mazzoni C., McReynolds A.D.K., Melchioretto P., Mewes H.-W., Minenkova O., Mueller-Auer S., Nawrocki A., Netter P., Neu R., Nombela C., Oliver S.G., Panzeri L., Paoluzi S., Plevani P., Portetelle D., Portillo F., Potier S., Purnelle B., Rieger M., Riles L., Rinaldi T., Robben J., Rodrigues-Pousada C., Rodriguez-Belmonte E., Rodriguez-Torres A.M., Rose M., Ruzzi M., Saliola M., Sanchez-Perez M., Schaefer B., Schaefer M., Scharfe M., Schmidheini T., Schreer A., Skala J., Souciet J.-L., Steensma H.Y., Talla E., Thierry A., Vandenbol M., van der Aart Q.J.M., Van Dyck L., Vanoni M., Verhasselt P., Voet M., Volckaert G., Wambutt R., Watson M.D., Weber N., Wedler E., Wedler H., Wipfli P., Wolf K., Wright L.F., Zaccaria P., Zimmermann M., Zollner A., Kleine K.
Nature 387:81-84(1997) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: ATCC 96604 / S288c / FY1679.
[4]Saccharomyces Genome Database
Submitted (DEC-2009) to the EMBL/GenBank/DDBJ databases
Cited for: GENOME REANNOTATION.
Strain: ATCC 204508 / S288c.
[5]"A family of ammonium transporters in Saccharomyces cerevisiae."
Marini A.-M., Soussi-Boudekou S., Vissers S., Andre B.
Mol. Cell. Biol. 17:4282-4293(1997) [PubMed] [Europe PMC] [Abstract]
Cited for: FUNCTION.
Strain: Sigma 1278B.
[6]"Evidence that fungal MEP proteins mediate diffusion of the uncharged species NH(3) across the cytoplasmic membrane."
Soupene E., Ramirez R.M., Kustu S.
Mol. Cell. Biol. 21:5733-5741(2001) [PubMed] [Europe PMC] [Abstract]
Cited for: FUNCTION.
[7]"A global topology map of the Saccharomyces cerevisiae membrane proteome."
Kim H., Melen K., Oesterberg M., von Heijne G.
Proc. Natl. Acad. Sci. U.S.A. 103:11142-11147(2006) [PubMed] [Europe PMC] [Abstract]
Cited for: TOPOLOGY [LARGE SCALE ANALYSIS].
Strain: ATCC 208353 / W303-1A.
+Additional computationally mapped references.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ		X77608 Genomic DNA. Translation: CAA54699.1.
X83099 Genomic DNA. Translation: CAA58156.1.
Z72906 Genomic DNA. Translation: CAA97132.1.
BK006941 Genomic DNA. Translation: DAA08213.1.
PIRS46225.
RefSeqNP_011636.3. NM_001181250.3.

3D structure databases

ProteinModelPortalP40260.
SMRP40260. Positions 20-425.
ModBaseSearch...

Protein-protein interaction databases

DIPDIP-5530N.
IntActP40260. 11 interactions.
MINTMINT-475198.
STRING4932.YGR121C.

Protein family/group databases

TCDB1.A.11.3.1. ammonia transporter channel (Amt) family.

Proteomic databases

PaxDbP40260.
PeptideAtlasP40260.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblFungiYGR121C; YGR121C; YGR121C.
GeneID853019.
KEGGsce:YGR121C.
sce:YGR126W.

Organism-specific databases

CYGDYGR121c.
SGDS000003353. MEP1.

Phylogenomic databases

eggNOGCOG0004.
GeneTreeENSGT00530000064546.
HOGENOMHOG000017736.
KOK03320.
OMAVYTPLAY.
OrthoDBEOG40311H.

Gene expression databases

GenevestigatorP40260.
GermOnlineYGR121C. Saccharomyces cerevisiae.

Family and domain databases

InterProIPR001905. Ammonium_transpt.
IPR018047. Ammonium_transpt_CS.
IPR024041. NH4_transpt_AmtB-like_dom.
[Graphical view]
PANTHERPTHR11730. PTHR11730. 1 hit.
PfamPF00909. Ammonium_transp. 1 hit.
[Graphical view]
SUPFAMSSF111352. RH_like_transpt. 1 hit.
TIGRFAMsTIGR00836. amt. 1 hit.
PROSITEPS01219. AMMONIUM_TRANSP. 1 hit.
[Graphical view]
ProtoNetSearch...

Other

NextBio972889.

Entry information

Entry nameMEP1_YEAST
AccessionPrimary (citable) accession number: P40260
Secondary accession number(s): D6VUQ2
Entry history
Integrated into UniProtKB/Swiss-Prot: February 1, 1995
Last sequence update: February 1, 1995
Last modified: May 1, 2013
This is version 107 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programFungal Protein Annotation Program

Relevant documents

Yeast

Yeast (Saccharomyces cerevisiae): entries, gene names and cross-references to SGD

Yeast chromosome VII

Yeast (Saccharomyces cerevisiae) chromosome VII: entries and gene names

SIMILARITY comments

Index of protein domains and families

to top of pageNames·Attributes·General annotation·Ontologies·Interactions·Sequence annotation·Sequences·References·Cross-refs·Entry info·Documents