Rabbit anti-Human, Mouse Myosin Light Chain Polyclonal Antibody

Anti-Myosin Light Chain Phospho-Ser20 Antibody

Cat. Num. AAA4157011

• Reactivity: Human, Mouse
• Applications: Western Blot, ELISA
• Purity: Affinity Purified
• Synonyms: Myosin Light Chain; Polyclonal Antibody; Anti-Myosin Light Chain Phospho-Ser20 Antibody; anti-Myosin Light Chain antibody

• Host: Rabbit
• Reactivity: Human, Mouse
• Clonality: Polyclonal
• Isotype: IgG
• Specificity: This affinity purified antibody is directed against the regulatory light chain of smooth and non-muscle myosin. The antibody is phosphospecific and detects monophosphorylated and diphosphorylated forms of the protein. The product was affinity purified from monospecific antiserum by immunoaffinity purification. Antiserum was first purified against the phosphorylated form of the immunizing peptide. The resultant affinity purified antibody was then cross-adsorbed against the non-phosphorylated form of the immunizing peptide. This phosphospecific polyclonal antibody is specific for the phosphorylated pS19/pS20 form of the protein, depending on the source origin of the protein. Reactivity with non-phosphorylated myosin light chain is less than 1% by ELISA. Cross reactivity is expected with myosin light chain from human and mouse. Reactivity with the protein from other species has not been determined. However, the sequence of the immunogen is nearly identical in mammalian and avian species. BLAST search analysis was used to determine that the smooth and non-muscle forms of myosin regulatory light chain have identical sequences. Cross reactivity is expected.
• Purity/Purification: Affinity Purified
• Form/Format: Liquid; PBS, pH 7.4 with 0.05% sodium azide.
• Concentration: 1ug/ul (varies by lot)

• Applicable Applications for anti-Myosin Light Chain antibody: Western Blot (WB), ELISA (EIA)
• Application Notes: This phospho specific polyclonal antibody was tested by ELISA and immunoblotting and was found to be reactive with unstimulated and stimulated cardiac myocytes. It was also reactive with the phosphorylated form of the immunizing peptide and minimally reactive with the non-phosphorylated form of the immunizing peptide. Although not tested, this antibody is likely functional in immunohistochemistry and immunoprecipitation.
• Immunogen: Human Myosin Light Chain phospho peptide corresponding to a region of the human smooth/non-muscle form of myosin regulatory light chain conjugated to Keyhole Limpet Hemocyanin (KLH).
• Preparation and Storage: This product is stable for several weeks at 4 degree C as an undiluted liquid. Dilute only prior to immediate use.; For extended storage, aliquot contents and freeze at-20 degree C or below. Avoid cycles of freezing and thawing. Expiration date is one (1) year from date of receipt.

Testing Data

Testing Data

Testing Data

Related Product Information for anti-Myosin Light Chain antibody

Myosin is the major component of thick muscle filaments, and is a long asymmetric molecule containing a globular head and a long tail. The molecule consists of two heavy chains each ~200,000 daltons, and four light chains each ~16,000-21,000 daltons. Activation of smooth and cardiac muscle primarily involves pathways that increase calcium levels and myosin phosphorylation, resulting in contraction. Myosin light chain phosphatase acts to regulate muscle contraction by dephosphorylating activated myosin light chain. This antibody is specific for the phosphorylated form of myosin light chain. The selected peptide sequence used to generate the polyclonal antibody is located near the amino terminal end of the polypeptide corresponding to the smooth/non-muscle form of myosin regulatory light chain found in cardiac myocytes in addition to smooth and non-muscle cells. This sequence differs from that of the sarcomeric/cardiac form of myosin regulatory light chain that has a different sequence around the phosphorylation site. Human and mouse have almost identical sequences. In human the phosphorylation site is pS19, while in mouse the site maps to pS20.