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. 1984 Feb;98(2):777-81.
doi: 10.1083/jcb.98.2.777.

Immunocytochemical localization of microtubule-associated protein 1 in rat cerebellum using monoclonal antibodies

G Huber, A Matus

Immunocytochemical localization of microtubule-associated protein 1 in rat cerebellum using monoclonal antibodies

G Huber et al. J Cell Biol. 1984 Feb.

Abstract

Immunohistochemical staining with monoclonal antibodies showed that microtubule-associated protein 1 (MAP1) has a restricted cellular distribution in the rat cerebellum. Anti-MAP1 staining was found only in neurons, where it was much stronger in dendrites than in axons. There were striking variations in the apparent concentration of MAP1 in different classes of neurons. Purkinje cells were the most strongly labeled, while granule cell neurons gave a faint, threshold-level reaction with the antibody. The reaction of Golgi neurons was intermediate between these two extremes. Equivalent results were obtained using two different methods of tissue preparation. Thus MAP1 appears to be a neuron-specific protein that is highly concentrated in dendrites and occurs at markedly different levels in different types of neurons. These observations provide further indications of heterogeneity among brain microtubules.

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