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Titolo:
Cloning and characterization of human NTT5 and v7-3: Two orphan transporters of the Na+/Cl--dependent neurotransmitter transporter gene family
Autore:
Farmer, MK; Robbins, MJ; Medhurst, AD; Campbell, DA; Ellington, K; Duckworth, M; Brown, AM; Middlemiss, DN; Price, GW; Pangalos, MN;
Indirizzi:
SmithKline Beecham Pharmaceut, Dept Neurosci Res, Harlow CM19 5AW, Essex, England SmithKline Beecham Pharmaceut Harlow Essex England CM19 5AW ssex, England SmithKline Beecham Pharmaceut, Dept Genet Technol, Harlow CM19 5AW, Essex,England SmithKline Beecham Pharmaceut Harlow Essex England CM19 5AW Essex,England SmithKline Beecham Pharmaceut, Dept Bioinformat, Harlow CM19 5AW, Essex, England SmithKline Beecham Pharmaceut Harlow Essex England CM19 5AW ssex, England
Titolo Testata:
GENOMICS
fascicolo: 2, volume: 70, anno: 2000,
pagine: 241 - 252
SICI:
0888-7543(200012)70:2<241:CACOHN>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
PROTEIN-KINASE-C; DOPAMINE-NOREPINEPHRINE TRANSPORTERS; AMINOBUTYRIC-ACID TRANSPORTER; GLYCINE TRANSPORTER; SEROTONIN TRANSPORTER; RAT-BRAIN; EXPRESSION; COCAINE; GLYCOSYLATION; LOCALIZATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Pangalos, MN SmithKline Beecham Pharmaceut, Dept Neurosci Res, New Frontiers Sci Pk,3rdAve, Harlow CM19 5AW, Essex, England SmithKline Beecham Pharmaceut New Frontiers Sci Pk,3rd Ave Harlow Essex England CM19 5AW
Citazione:
M.K. Farmer et al., "Cloning and characterization of human NTT5 and v7-3: Two orphan transporters of the Na+/Cl--dependent neurotransmitter transporter gene family", GENOMICS, 70(2), 2000, pp. 241-252

Abstract

Orphan transporters form a growing subfamily of genes related by sequence similarity to the Na+/Cl(-)dependent neurotransmitter superfamily. Using a combination of database similarity searching and cloning methods, we have identified and characterized two novel human orphan transporter genes, v7-3 and NTT5. Similar to other known orphan transporters, v7-3 and NTT5 contain12 predicted transmembrane domains, intracellular N- and C-terminal domains, and large extracellular loops between transmembrane (TM) domains 3 and 4and between TRI domains 7 and 8. Residues within the extracellular loops are also predicted to contain sites for N-linked glycosylation. Human v7-3, the species orthologue of rat v7-3, contains an open reading frame (ORF) of730 amino acids. Human NTT5 is a new member of the orphan transporter family and has an ORF of 736 amino acids. The amino acid sequences of human v7-3 and NTT5 are greater than 50% similar to other known orphan neurotransmitter transporters and also show sequence similarity to the human serotonin and dopamine transporters. Radiation hybrid mapping located the human v7-3 and NTT5 genes on chromosomes 12q21.3-q21.4 and 19q13.1-q13.4, respectively. Human mRNA distribution analysis by TaqMan reverse transcription-polymerase chain reaction showed that v7-3 mRNA is predominantly expressed in neuronal tissues, particularly amygdala, putamen, and corpus callosum, with low-level expression in peripheral tissues. In contrast, NTT5 mRNA was highly expressed in peripheral tissues, particularly in testis, pancreas, and prostate. Transient transfection with epitope-tagged transporter constructs demonstrated v7-3 to be expressed at the cell surface, whereas NTT5 was predominantly intracellular, suggestive of a vesicular location. Although the substrates transported by these transporters remain unknown, their specific but widespread distribution suggests that they may mediate distinct and important functions within the brain and the periphery. (C) 2000 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 12:16:02