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Cloning of the Sodium-dependent, Broad-scope, Neutral Amino Acid Transporter Bo from a Human Placental Choriocarcinoma Cell Line

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Kekuda, Ramesh, Prasad, Puttur D., Fei, You-Jun, Torres-Zamorano, Viviana, Sinha, Srish, Yang-Feng, Teresa L., Leibach, Frederick H., Ganapathy, Vadivel·1996·Journal of Biological Chemistry

Abstract

We have isolated a cDNA from a human placental choriocarcinoma cell cDNA library which, when expressed in HeLa cells, induces a Na+-dependent amino acid transport system with preference for zwitterionic amino acids. Anionic amino acids, cationic amino acids, imino acids, and N-methylated amino acids are excluded by this system. These characteristics are identical to those described for the amino acid transporter Bo. When expressed in Xenopus laevis oocytes that do not have detectable endogenous activity of the amino acid transporter Bo, the cloned transporter increases alanine transport in the oocytes severalfold and induces alanine-evoked inward currents in the presence of Na+. The cDNA codes for a polypeptide containing 541 amino acids with 10 putative transmembrane domains. Amino acid sequence homology predicts this transporter (hATBo) to be a member of a superfamily consisting of the glutamate transporters, the neutral amino acid transport system ASCT, and the insulin-activable neutral/anionic amino acid transporter. Chromosomal assignment studies with somatic cell hybrid analysis and fluorescent in situ hybridization have located the ATBo gene to human chromosome 19q13.3.

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Metadata

Authors
Kekuda, R., Prasad, P. D., Fei, Y.-J., Torres-Zamorano, V., Sinha, S., Yang-Feng, T. L., Leibach, F. H., & Ganapathy, V.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1996-08
Volume
271
Issue
31
Pages
18657-18661
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2092574194
Cited by
271
References
0
FWCI
5.33
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Cloning of the Sodium-dependent, Broad-scope, Neutral Amino Acid Transporter Bo from a Human Placental Choriocarcinoma Cell Line. https://app.cochat.ai/papers/10.1074/jbc.271.31.18657
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Kekuda, R., Prasad, P. D., Fei, Y.-J., Torres-Zamorano, V., Sinha, S., Yang-Feng, T. L., Leibach, F. H., & Ganapathy, V. (1996). Cloning of the Sodium-dependent, Broad-scope, Neutral Amino Acid Transporter Bo from a Human Placental Choriocarcinoma Cell Line. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.271.31.18657

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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