LOCALIZATION OF THE ANTIGENS D1, D2 AND D3 IN THE RAT BRAIN SYNAPTIC MEMBRANE

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Abstract
The inside-outside localization of the nervous system specific membrane proteins D1, D2 and D3 was investigated by a immunoabsorption technique. It was found that D1 was located at least partly on the outside of the synaptic membrane in contrast to D3 which was inside on the membrane, facing the cytoplasm. The protein D2 was outside on the synaptic membrane, and it was found very accessible to the antiserum. It is speculated that D2 might be involved in the axonal-dendritic recognition process during synaptogenesis