Synaptopodin, a prolin-rich actin-binding protein with 2 binding sites for actin, represents a new class of actin-binding proteins which has first been localized in podocytes and a subset of telencephalic postsynaptic densities. In human tissue synaptopodin has a molecular weight of 73.7kD and pI of 9.38 (calculated from sequence data), in mouse the corresponding data are 74kD, pI 9.27. In SDS-PAGE the antigen appears as 100kD polypeptide in brain and 110kD polypeptide in kidney (the difference might be attributed to posttranslational modifications). Applications: Suitable for use in Immunofluorescence/Immunocytochemistry, Western Blot and Immunohistochemistry. Other applications have not been tested. Recommended Dilutions: Immunohistochemistry (Frozen): 1:50-1:200 Immunohistochemistry (Paraffin): 1:50-1:200. Requires microwave treatment prior to incubation. Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.