Abstract:
:By screening an expressed sequence tag database, we identified a novel human gene, SLC7A4, encoding a solute carrier family 7 [cationic amino acid (CAA) CAT-4 transporter, y+ system] member 4. The SLC7A4 cDNA is 2325 nt long and includes 78, 1911, and 336 nt in the 5' noncoding, coding, and 3'-noncoding regions, respectively. SLC7A4 displays high homology with SLC7A1 and SLC7A2, two previously known CAA transporters. By chromosomal in situ hybridization and YAC identification, SLC7A4 was mapped to 22q11.2, the commonly deleted region of the velocardiofacial syndrome (VCFS, Shprintzen syndrome). In a patient affected by VCFS, deletion of SLC7A4 was demonstrated by chromosomal FISH. By Northern analysis, an abundant transcript was detected in brain, testis, and placenta. Microinjection of SLC7A4 mRNA into Xenopus laevis oocytes demonstrates a significant stimulation of CAA transport.
journal_name
Genomicsjournal_title
Genomicsauthors
Sperandeo MP,Borsani G,Incerti B,Zollo M,Rossi E,Zuffardi O,Castaldo P,Taglialatela M,Andria G,Sebastio Gdoi
10.1006/geno.1998.5252subject
Has Abstractpub_date
1998-04-15 00:00:00pages
230-6issue
2eissn
0888-7543issn
1089-8646pii
S0888-7543(98)95252-1journal_volume
49pub_type
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