Work with LifeSpan to design a custom immunohistochemistry to address your specific biological question. Outsource the entire localization process without having to
worry about finding and characterizing target specific antibodies, sourcing and validating difficult-to-find tissues, and having the ability to interpret the resulting
immunostaining in relation to complex human pathologies.
TCR Screening Services
Test your therapeutic antibodies in immunohistochemistry against a broad panel of normal frozen human tissue types in order to determine potential unintended binding.
Our non-GLP TCR services are designed on the FDA recommendation outlined in their "Points to Consider in the Manufacture and Testing of Monoclonal Antibody Products for Human Use".
Phosphoserine antibody was raised against phosphoserine conjugated with KLH.
Recognizes phosphoserine, peptidyl-phosphoserine and serine-phosphorylated proteins. Does not cross-react with ATP, phosphotyrosine, peptidyl phosphothreonine and serine. Slight cross-reactivity with free phosphothreonine. Readily reacts to known phosphoproteins such as phosvitin and alpha casein. Species cross-reactivity: All species.
Suitable for use in Western Blot, Immunoprecipitation, Immunohistochemistry and ELISA. Western Blot (tissue lysates): 50-100 ug/lane total protein, antibody dilution can be from 1:250-1:1000, overloading will show solid exposed lanes. Dilute the primary antibody until multiple phosphorylated bands will appear. If using purified proteins dilutions from 1:50-1:1000 will need to be tried. At 1:300 dilution the antibody normally detects 10 ng of protein with 2 hour incubations and enhanced HRP detection. Blocking of the blot should be with non-phosphoserine containing compounds such as 1-5% BSA in TBS that has been filtered through a 0.45um. Milk or casein is not recommended because of the presence of phospho-serine in these solutions. Buffers should be Tris based so that phosphate ion interference is minimized. Immunoprecipitation (tissue extracts): 10-20 ug/mg protein. Note that this will immunoprecipitate all phosphoserine proteins in the extracts. If using purified protein exacts containing only the protein of interest, antibody amounts should be decreased to 5 ug/500 ul of extracts. ELISA (kinase assay): 1:250-1:500. Immunohistochemistry: 1:50. Detects all phosphoserines, and any phosphorylated serine protein or peptide can be used to block antibody staining. Typically, a10M excess of peptide is used in Tris based buffers. Positive control: NIH 3T3 cells (+/- TPA), K562 cells and EGF-stimulated A431 cells.
PBS, 50% glycerol.
For long-term storage and to avoid repeated freezing and thawing, aliquot and store at -20°C. Aliquots are stable for at least 12 months at -20°C.