An optimized immunohistochemical method for detection of phosphorylated mitogen-activated protein kinases.

Study of the in vivo spatio-temporal localization of modified proteins is likely to become a major focus of proteomics research in the near future. In this study we optimized and tested an immunohistochemical procedure for detecting unstable phosphorylated mitogen-activated protein (MAP) kinases. Using our method, phosphorylated MAP kinases can be sensitively and reproducibly localized in the developing white matter of murine spinal cord on embryonic day 15. Our method is simple and effective, and so may be useful in future proteomics research.