The beta subunit of voltage-dependent calcium channels contributes to the function of the calcium channel by increasing peak calcium current, shifting the voltage dependencies of activation and inactivation, modulating G protein inhibition and controlling the alpha-1 subunit membrane targeting.
Background References
1. Brust P F et al. Human neuronal voltage-dependent calcium channels: studies on subunit structure and role in channel assembly. Neuropharmacology 32:1089-1102 (1993).
2. Sjoeblom T et al. The consensus coding sequences of human breast and colorectal cancers. Science 314:268-274 (2006).
Sequence Similarity
Belongs to the calcium channel beta subunit family.
Tissue Specificity
Detected in heart ventricle (at protein level). Isoform 1 and isoform 3 are expressed in brain, heart, spleen, central nervous system and neuroblastoma cells. Isoform 2 is expressed in skeletal muscle.
Western blot analysis of CACNB1 on different lysates with Rabbit anti-CACNB1 antibody (ER1803-29) at 1/2,000 dilution.
Lane 1: Mouse brain tissue lysate Lane 2: Rat brain tissue lysate
Lysates/proteins at 20 µg/Lane. Exposure time: 3 minutes; ECL: K1801
Blocking: 5% NFDM/TBST, 1 hour at room temperature Primary antibody: ER1803-29, 1/2,000 in primary antibody dilution buffer (K1803), overnight at 4 ℃ Secondary antibody: Goat anti-Rabbit IgG-HRP (HA1001), 1/50,000 in 5% NFDM/TBST, 1 hour at room temperature
Predicted band size: 65 kDa Observed band size: 53 kDa
Immunohistochemical analysis of paraffin-embedded rat heart tissue using anti-CACNB1 antibody. Counter stained with hematoxylin.
Immunohistochemical analysis of paraffin-embedded human fetal skeletal muscle tissue using anti-CACNB1 antibody. Counter stained with hematoxylin.
Immunohistochemical analysis of paraffin-embedded human fetal skeletal muscle tissue using anti-CACNB1 antibody. Counter stained with hematoxylin.
Immunohistochemical analysis of paraffin-embedded mouse brain tissue using anti-CACNB1 antibody. Counter stained with hematoxylin.
Immunohistochemical analysis of paraffin-embedded rat skeletal muscle tissue with Rabbit anti-CACNB1 antibody (ER1803-29) at 1/200 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (ER1803-29) at 1/200 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
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