Annotated protein:Myristoylated alanine-rich C-kinase substrate (MARCKS) (Protein kinase C substrate 80 kDa protein). Gene symbol: MARCKS. Taxonomy: Rattus norvegicus (Rat). Uniprot ID: P30009
antibody wiki:
SynGO gene info:SynGO data @ MARCKS
Ontology domain:Cellular Component
SynGO term:anchored component of presynaptic membrane (GO:0099026)
Synapse type(s):cerebral cortex
Annotated paper:Ouimet CC, et al. "Localization of the MARCKS (87 kDa) protein, a major specific substrate for protein kinase C, in rat brain" J Neurosci. 1990 May;10(5):1683-98 PMID:2332803
Figure(s):Fig.11
Annotation description:Preembedding immuno-EM reveals the presence of immunoreactivityfor MARCKS in some axons and axon terminals in the cingulate cortex.

MARCKS is myristoylated and interacts additionally via a cluster of basic residues through electrostatic interactions with the plasma membrane (myristoyl-electrostatic switch). Therefore the term "anchored component of the presynaptic PM" was chosen. Phosphorylation of MARCKS induces translocation of the protein to the cytosol (Reference 1). MARCKS is detected both, in membrane and soluble fractions (Reference 2).

An affinity purified antibody against rat MARCKS was generated in the study and the specificity of the antibody was confirmed by Western Blot (Fig. 1). No KO-control.

21/8/2017 Pim
- myristoylation used to infer 'anchored component of presynaptic membrane (GO:0099026)'
Evidence tracking, Biological System:Intact tissue
Evidence tracking, Protein Targeting:Antagonist / agonist
Evidence tracking, Experiment Assay:Electron Microscopy
Annotator(s):Noa Lipstein (ORCID:0000-0002-0755-5899)
Cordelia Imig (ORCID:0000-0001-7351-8706)
Vincent O'connor (ORCID:0000-0003-3185-5709)
Nils Brose (ORCID:0000-0003-0938-8534)
Lab:Department of Molecular Neurobiology, Max Planck Institute of Experimental Medicine, 37075 Göttingen, Germany
Additional literature:In isolated synaptosomes, phosphorylation of MARCKS by PKC in response to stimulation by phorbol esters or depolarization-induced Ca2+-influx, induces a translocation of MARCKS from the membrane to the cytosol (Fig.1-3). @ PMID:2928330

In subcellular fractionation experiments of rat brain, MARCKS was enriched in soluble fractions (S3 and LS2), but also present in most membrane fractions, however was not detected in the SV fraction (Fig.5). @ PMID:8557647
SynGO annotation ID:827
Dataset release (version):20231201
View annotation as GO-CAM model:Gene Ontology