|Catalog Number||Size||Price (USD)||Shopping Cart|
|MO22166||100 ul||$295.00||Buy Now | Add to Cart|
Calretinin is a member of the large superfamily of cytoplasmic Ca2+ binding proteins, thus belongs to the subclass of these containing the “EF hand” Ca2+ binding motif originally characterized in parvalbumin. Calretinin is expressed in mammalian central nerve system, testis, fallopian tube and pancreas. In the brain it is localized in certain classes of neurons, and antibodies to it are useful for identifying specific neuronal cell types. It is particularly concentrated in some cerebellar granular cells and their parallel fibers, but is also found in many GABAergic interneurons in the cortex. These GABAergic interneurons, in most cases, express only one of three Ca2+ binding proteins, namely calretinin, calbindin or parvalbumin . As a result, these important inhibitory interneurons can be identified and subclassified based on their content of these three proteins. Each type of neuron as defined in this fashion has particular electrophysiological and functional properties. For example, calbindin positive interneurons are not fast-spiking as are parvalbumin expressinginterneurons. Human calretinin is also known as 29 kDa calbindin and calbindin-2, for its sequence is related to calbindin.
Image: Left: Mixed neuron/glial cultures stained with MO22166 at 1:2,000 in red, and our chicken polyclonal antibody to Vimentin (CH22108) in green. Calretinin is prominently expressed in small number of interneurons, while astrocytes and fibroblasts were visualized with the vimentin antibody. Middle: Adult rat cortical section (45 μM; fixed by transcardial perfusion with 4% paraformaldehyde) was co-stained with MO22166 (1:1000; red) and our chicken polyclonal antibody to calbindin (CH22118, green). In the motor cortex, calretinin is expressed in a small population of interneurons that do not express calbindin. Because each antibody specifically labels a different population of cells exclusively, the cells are either stained with red, or green. Right: Adult mouse brain hippocampal section (45 μM; fixed by transcardial perfusion with 4% paraformaldehyde) was co-stained with MO22166 (1:1000, red) and our calbindin CH22118, (green). In the stratum radiatum of CA1 region, calretinin expresses in a small number of interneurons that do not express calbindin. As a result, our antibodies label different neurons in either red or green. Insets are high-magnification images of the boxed area in each picture. Blue is a hoechst DNA staining.
Neuronal-Glial Markers-Astrocytes, Glia, Microglia, Olidogodendrocytes, Progenitors and Schwann Cell Markers
Primary Neurons and Astrocytes-Primary human, rat and mouse neurons and astrocytes
Image: Western blot analysis of MO22166. Blot of rat brain lysates (lane1), recombinant proteins: pavalbumin (lane 2), calretinin (lane 3), calbindin ( lane 4) was probed with MO22166 at 1:5,000. In rat brain lysates, this antibody recognizes a clean band at 29 kDa which represents calretinin . Also it reacts with only calretinin, not other calcium-binding proteins.