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XB-ART-24526
Biochem Biophys Res Commun 1991 Sep 30;1793:1620-6.
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Microtubule destabilization by cdc2/H1 histone kinase: phosphorylation of a "pro-rich region" in the microtubule-binding domain of MAP-4.

Aizawa H , Kamijo M , Ohba Y , Mori A , Okuhara K , Kawasaki H , Murofushi H , Suzuki K , Yasuda H .


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Microtubule-associated protein-4 (MAP-4), a major MAP in proliferating cells, consists of a microtubule-binding domain and a projection domain protruding from the microtubule wall. The former contains a Pro-rich region and an assembly-promoting (AP) sequence region which is common to the neuron-specific MAPs, MAP-2 and tau1. In this paper, we describe the phosphorylation of the Pro-rich region of MAP-4 and the suppression of its assembly-promoting activity by cdc2/H1 histone kinase. This inactivation of MAP-4 may cause disassembly of the interphase microtubular network at the end of the G2 phase of the cell cycle.

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Species referenced: Xenopus
Genes referenced: cdk1 pold1