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Title: Protein complex studies on calmodulin - GAP-43 (neuromodulin)
Authors: LIU BO
Keywords: protein complex, Calmodulin, GAP-43, IQ motif, GTA, crosslinking
Issue Date: 28-Dec-2005
Citation: LIU BO (2005-12-28). Protein complex studies on calmodulin - GAP-43 (neuromodulin). ScholarBank@NUS Repository.
Abstract: Calmodulin (CaM) is a ubiquitous Ca2+-binding protein found in all eukaryotic cells. It interacts with a wide variety of proteins and modulates their functions. In low intracellular Ca2+ concentration, Ca2+-free CaM (apoCaM) interacts with proteins containing IQ motif. GAP-43 (Neuromodulin) is a neuron specific growth-associated protein containing IQ-motif as its CaM-binding domain. It is considered to be a major determinant of synaptic development and plasticity, and has been implicated in molecular mechanisms underlying learning and memory. PKC phosphorylation has important effects on the interaction between CaM and GAP-43.CaM and a GAP-43 truncate (GAP-43t) were overexpressed and purified. Protein complex of apoCaM and GAP-43t was obtained by GTA crosslinking and identified by SDS-PAGE analysis. This protein complex provides a new approach to the studies on both the CaM a?? GAP-43 interaction and the apoCaM a?? IQ motif interaction. Further studies on the protein complex will provide significant insights into both interactions.
Appears in Collections:Master's Theses (Open)

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