Cytoplasmic adapter protein that plays a critical role in clathrin-mediated endocytosis which is important in processes such as internalization of cell receptors, synaptic transmission or removal of apoptotic cells. Recruits AP-2 and attaches clathrin triskelions to the cytoplasmic side of plasma membrane leading to clathrin-coated vesicles (CCVs) assembly. Furthermore, regulates clathrin-coated vesicle size and maturation by directly sensing and driving membrane curvature. In addition to binding to clathrin, mediates the endocytosis of small R-SNARES (Soluble NSF Attachment Protein REceptors) between plasma membranes and endosomes including VAMP2, VAMP3, VAMP4, VAMP7 or VAMP8. In turn, PICALM-dependent SNARE endocytosis is required for the formation and maturation of autophagic precursors. Modulates thereby autophagy and the turnover of autophagy substrates such as MAPT/TAU or amyloid precursor protein cleaved C-terminal fragment (APP-CTF).
Background References
1. Moshkanbaryans L., Xue J., Wark J.R., Robinson P.J., Graham M.E. A Novel Sequence in AP180 and CALM Promotes Efficient Clathrin Binding and Assembly. PLoS ONE 11:E0162050-E0162050 (2016)
2. Sahlender D.A., Kozik P., Miller S.E., Peden A.A., Robinson M.S. Uncoupling the functions of CALM in VAMP sorting and clathrin-coated pit formation. PLoS ONE 8:E64514-E64514 (2013)
Clathrin assembly lymphoid myeloid leukemia protein antibody
CLTH antibody
LAP antibody
Phosphatidylinositol-binding clathrin assembly protein antibody
PICAL_HUMAN antibody
PICALM antibody
Images
Western blot analysis of PICALM on different lysates with Rabbit anti-PICALM antibody (HA721707) at 1/1,000 dilution.
Lane 1: HeLa cell lysate Lane 2: HepG2 cell lysate Lane 3: PC-3M cell lysate Lane 4: HCT 116 cell lysate Lane 5: 293T cell lysate Lane 6: Neuro-2a cell lysate Lane 7: PC-12 cell lysate
Lysates/proteins at 20 µg/Lane.
Predicted band size: 71 kDa Observed band size: 65/71 kDa
Exposure time: 3 minutes;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA721707) at 1/1,000 dilution was used in 5% NFDM/TBST at room temperature for 2 hours. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
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