PMID- 11144223 OWN - NLM STAT- MEDLINE DCOM- 20010308 LR - 20091119 IS - 1040-452X (Print) IS - 1040-452X (Linking) VI - 58 IP - 1 DP - 2001 Jan TI - Colocalization of CaM KII and MAP kinase on architectural elements of the mouse egg: potentiation of MAP kinase activity by CaM KII. PG - 69-77 AB - The conversion of the egg to a zygote requires the initiation of several signaling pathways that act in an orchestrated fashion to rapidly remodel the egg. Architectural elements within the egg can serve to localize components of these signaling pathways and colocalization of such components provides the opportunity for interaction between different signaling pathways. This study examines the localization as well as the state of activation of two different kinases, MAP kinase and calcium/calmodulin-dependent protein kinase II (CaM KII). The meiotic spindle serves as a site for enrichment of these kinases. However, activated MAP kinase and activated CaM KII exhibit a developmental stage-specific pattern of localization that represents a subset of the area occupied by the distribution of the total mass of MAP kinase and CaM KII. Suppression of CaM KII activity results in reduction in the amount of MAP kinase as well as a decreased level of activity of MAP kinase. Since CaM KII becomes active as a result of fertilization, the former kinase could serve to potentiate MAP kinase activity and the colocalization of these two kinases may facilitate such an interaction. FAU - Hatch, K R AU - Hatch KR AD - Department of Biology, Arizona State University, Tempe 85287-1501, USA. FAU - Capco, D G AU - Capco DG LA - eng GR - HD 32621/HD/NICHD NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Mol Reprod Dev JT - Molecular reproduction and development JID - 8903333 RN - EC 2.7.11.17 (Calcium-Calmodulin-Dependent Protein Kinase Type 2) RN - EC 2.7.11.17 (Calcium-Calmodulin-Dependent Protein Kinases) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) SB - IM MH - Animals MH - Calcium-Calmodulin-Dependent Protein Kinase Type 2 MH - Calcium-Calmodulin-Dependent Protein Kinases/*metabolism MH - Enzyme Activation MH - Female MH - Humans MH - MAP Kinase Signaling System MH - Mice MH - Mitogen-Activated Protein Kinases/*metabolism MH - Ovum/cytology/*enzymology MH - Signal Transduction EDAT- 2001/01/06 11:00 MHDA- 2001/03/10 10:01 CRDT- 2001/01/06 11:00 PHST- 2001/01/06 11:00 [pubmed] PHST- 2001/03/10 10:01 [medline] PHST- 2001/01/06 11:00 [entrez] AID - 10.1002/1098-2795(200101)58:1<69::AID-MRD10>3.0.CO;2-O [doi] PST - ppublish SO - Mol Reprod Dev. 2001 Jan;58(1):69-77. doi: 10.1002/1098-2795(200101)58:1<69::AID-MRD10>3.0.CO;2-O.