Calmodulin Promotes N-BAR Domain-Mediated Membrane Constriction and Endocytosis
Overview
Reproductive Medicine
Affiliations
Membrane remodeling by BAR (Bin, Amphiphysin, RVS) domain-containing proteins, such as endophilins and amphiphysins, is integral to the process of endocytosis. However, little is known about the regulation of endocytic BAR domain activity. We have identified an interaction between the yeast Rvs167 N-BAR domain and calmodulin. Calmodulin-binding mutants of Rvs167 exhibited defects in endocytic vesicle release. In vitro, calmodulin enhanced membrane tubulation and constriction by wild-type Rvs167 but not calmodulin-binding-defective mutants. A subset of mammalian N-BAR domains bound calmodulin, and co-expression of calmodulin with endophilin A2 potentiated tubulation in vivo. These studies reveal a conserved role for calmodulin in regulating the intrinsic membrane-sculpting activity of endocytic N-BAR domains.
Cui P, Tian M, Huang J, Zheng X, Guo Y, Li G Pathogens. 2022; 11(9).
PMID: 36145429 PMC: 9501185. DOI: 10.3390/pathogens11090997.
Ca Regulates Dimerization of the BAR Domain Protein PICK1 and Consequent Membrane Curvature.
Stan G, Shoemark D, Alibhai D, Hanley J Front Mol Neurosci. 2022; 15:893739.
PMID: 35721319 PMC: 9201945. DOI: 10.3389/fnmol.2022.893739.
Endophilin A1 drives acute structural plasticity of dendritic spines in response to Ca2+/calmodulin.
Yang Y, Chen J, Chen X, Li D, He J, Wang S J Cell Biol. 2021; 220(6).
PMID: 33988695 PMC: 8129810. DOI: 10.1083/jcb.202007172.
Akram Z, Ahmed I, Mack H, Kaur R, Silva R, Castilho B Cells. 2020; 9(3).
PMID: 32164332 PMC: 7140605. DOI: 10.3390/cells9030672.
Soczewka P, Kolakowski D, Smaczynska-de Rooij I, Rzepnikowska W, Ayscough K, Kaminska J Dis Model Mech. 2019; 12(1).
PMID: 30635263 PMC: 6361151. DOI: 10.1242/dmm.036830.