Caveolae (also known as plasmalemmal vesicles) are 50-100 nM flask-shaped membranes that represent a subcompartment of the plasma membrane. On the basis of morphological studies, caveolae have been implicated to function in the transcytosis of various macromolecules (including LDL) across capillary endothelial cells, uptake of small molecules via potocytosis and the compartmentalization of certain signaling molecules including G protein-coupled receptors. Three proteins, caveolin-1, caveolin-2 and caveolin-3, have been identified as principal components of caveolae. Two forms of caveolin-1, designated alpha and beta, share a distinct but overlapping cellular distribution and differ by an amino terminal 31 amino acid sequence which is absent from the beta isoform. Caveolin-1 shares 31% identity with caveolin-2 and 65% identity with caveolin-3 at the amino acid level. Functionally, the three proteins differ in their interactions with heterotrimeric G protein isoforms.
Background References
1. Niesman IR et al. Traumatic brain injury enhances neuroinflammation and lesion volume in caveolin deficient mice. J Neuroinflammation 11:39 (2014).
2. Zheng J et al. Chymase Mediates Injury and Mitochondrial Damage in Cardiomyocytes during Acute Ischemia/Reperfusion in the Dog. PLoS One 9:e94732 (2014).
Sequence Similarity
Belongs to the caveolin family.
Tissue Specificity
Expressed predominantly in muscle.
Post-translational Modification
Sumoylation with SUMO3 by PIAS4 may reduce agonist-induced internalization and desensitization of adrenergic receptor ABRD2.
Western blot analysis of Caveolin-3 on different lysates with Rabbit anti-Caveolin-3 antibody (ET1607-16) at 1/2,000 dilution.
Lane 1: HEK-293 cell lysate Lane 2: Mouse heart tissue lysate Lane 3: Mouse skeletal muscle tissue lysate Lane 4: Rat heart tissue lysate Lane 5: Rat skeletal muscle tissue lysate
Lysates/proteins at 30 µg/Lane. Exposure time: 6 seconds; ECL: K1801
Negative expression of Caveolin-3 protein in HEK-293 cell is consistent with the predicted expression pattern.
Blocking: 5% NFDM/TBST, 1 hour at room temperature Primary antibody: ET1607-16, 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: 17 kDa Observed band size: 17 kDa
Immunohistochemical analysis of paraffin-embedded rat heart tissue with Rabbit anti-Caveolin-3 antibody (ET1607-16) at 1/1,000 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 (ET1607-16) at 1/1,000 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.
Immunohistochemical analysis of paraffin-embedded human striated muscle tissue with Rabbit anti-Caveolin-3 antibody (ET1607-16) at 1/1,000 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 (ET1607-16) at 1/1,000 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.
Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"