Human/Mouse/Rat p38 alpha Antibody

Detection of Human/Mouse/Rat p38 alpha by Western Blot.

Western blot shows lysates of HeLa human cervical epithelial carcinoma cell line, NIH-3T3 mouse embryonic fibroblast cell line, and PC-12 rat adrenal pheochromocytoma cell line. PVDF membrane was probed with 1 µg/mL of Human/Mouse/Rat p38a Monoclonal Antibody (Catalog # MAB869) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF007). A specific band was detected for p38a at approximately 38 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 4.

Western Blot Shows Human p38 alpha Specificity by Using Knockout Cell Line.

Western blot shows lysates of HEK293T human embryonic kidney parental cell line and p38a knockout HEK293T cell line (KO). PVDF membrane was probed with 1 µg/mL of Mouse Anti-Human/Mouse/Rat p38a Monoclonal Antibody (Catalog # MAB869) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF018). A specific band was detected for p38a at approximately 38 kDa (as indicated) in the parental HEK293T cell line, but is not detectable in knockout HEK293T cell line. GAPDH (Catalog # MAB5718) is shown as a loading control. This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Detection of Mouse p38 alpha by Western Blot

Muscle-specific deletion of the p38 alpha, p38 beta or p38 gamma gene does not affect endurance exercise-induced fiber-type transformation. Wild type, p38 alpha, p38 beta, and p38 gamma MKO mice were subjected to 4 weeks of voluntary running (Ex) or sedentary cage activity (Sed) followed by fiber-type and immunoblot analyses in plantaris muscles. A) PCR of genomic DNA with the appropriate primers (see Materials and Methods) for the loxP flanked p38 alleles in wild type (WT), heterozygous (+/−) and homozygous (−/−) mice with loxP-flanked p38 alleles. Only the homozygous mice with the Cre transgene (not shown) were considered p38 muscle-specific knockout (MKO) mice; B) Immunoblot analysis for p38 alpha and p38 gamma protein in plantaris muscles of p38 MKO mice in comparison with the wild type littermates. alpha-tubulin was used as a loading control; and C) Images of immunofluorescence staining of plantaris muscle sections with antibodies against myosin heavy chain IIb (Green), IIa (Blue) and I (Red). Appreciable increases in the percentage of type IIa fibers with concurrent decreases in type IIb fibers are noted in Ex group compared with Sed group among all four genetic backgrounds. The quantitative data is presented in Table 1. Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/19936205), licensed under a CC-BY license. Not internally tested by R&D Systems.