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Volume 317, Issue 1-2 p. 79-84
Research letters
Free Access

A monoclonal antibody raised against an [Na+K+]coupled l-glutamate transporter purified from rat brain confirms glial cell localization

Line M. Levy

Line M. Levy

Anatomical Institute, University of Oslo, P.O.B. 1105 Biindern, N-0317 Oslo, Norway

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Knut P. Lehre

Knut P. Lehre

Anatomical Institute, University of Oslo, P.O.B. 1105 Biindern, N-0317 Oslo, Norway

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Bent Rolstad

Bent Rolstad

Anatomical Institute, University of Oslo, P.O.B. 1105 Biindern, N-0317 Oslo, Norway

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Niels C. Danbolt

Corresponding Author

Niels C. Danbolt

Anatomical Institute, University of Oslo, P.O.B. 1105 Biindern, N-0317 Oslo, Norway

Correspondence address: N.C. Danbolt, Anatomical Institute, University of Oslo, P.O.Box 1105, Blindern, N-0317 OsloNorway. Fax: (47) (2) 85 12 78.Search for more papers by this author
First published: February 08, 1993
Citations: 100

Abstract

A monoclonal antibody (9C4) shows that an [Na+K+]coupled glutamate transporter protein purified from rat brain runs electrophoretically as a wide band and is localized in neuroglial cell bodies and processes, but not in neurons. This confirms the findings with polyclonal antibodies [Neuroscience 51 (1992) 295-310], and shows that the apparent heterogeneity in relative molecular mass is accounted for by a single antigenic epitope. By testing several synthetic peptides derived from the deduced amino acid sequences of two cloned rat brain glutamate transporters, the antigenic epitope was identified as residing within the peptide TQSVYDDTKNHRESNSNQC (residues 518–536) of one of these [Nature 360 (1992) 464-467].