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Cdc2 kinase directly phosphorylates the cis-Golgi matrix protein GM130 and is required for Golgi fragmentation in mitosis.

Authors: Lowe, M  Rabouille, C  Nakamura, N  Watson, R  Jackman, M  Jamsa, E  Rahman, D  Pappin, DJ  Warren, G 
Citation: Lowe M, etal., Cell 1998 Sep 18;94(6):783-93.
Pubmed: (View Article at PubMed) PMID:9753325

Mitotic fragmentation of the Golgi apparatus can be largely explained by disruption of the interaction between GM130 and the vesicle-docking protein p115. Here we identify a single serine (Ser-25) in GM130 as the key phosphorylated target and Cdc2 as the responsible kinase. MEK1, a component of the MAP kinase signaling pathway recently implicated in mitotic Golgi fragmentation, was not required for GM130 phosphorylation or mitotic fragmentation either in vitro or in vivo. We propose that Cdc2 is directly involved in mitotic Golgi fragmentation and that signaling via MEK1 is not required for this process.


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CRRD Object Information
CRRD ID: 632911
Created: 2003-08-29
Species: All species
Last Modified: 2003-08-29
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.