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  • M8421 - Monoclonal Anti-Myosin (Skeletal, Slow) antibody produced in mouse

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M8421 Sigma

Monoclonal Anti-Myosin (Skeletal, Slow) antibody produced in mouse

clone NOQ7.5.4D, ascites fluid

Properties

Related Categories Alphabetical Index, Antibodies, Antibodies for Cell Biology, Antibodies to Actin-associated Proteins/Myosin, Antibodies to Cell and Organelle Proteins,
species reactivity   sheep, goat, hamster, rabbit, human, canine, bovine, feline, rat, pig, guinea pig, mouse, chicken
application(s)   electron microscopy: suitable
  immunohistochemistry (formalin-fixed, paraffin-embedded sections): 1:4,000 using protease-digested, sections of rabbit tongue
  indirect ELISA: suitable
  radioimmunoassay: suitable
  western blot: 1:5,000 using extract of rat or rabbit tongue
clone   NOQ7.5.4D, monoclonal
antibody form   ascites fluid
isotype   IgG1
contains   15 mM sodium azide
shipped in   dry ice
storage temp.   −20°C
Gene Information   human ... MYH7(4625)
mouse ... Myh7(140781)
rat ... Myh7(29557)
biological source   mouse
conjugate   unconjugated

Description

Immunogen

human skeletal muscle myosin purified from myofibrils.

General description

Myosin is a 480 kDa protein known to interact with actin in muscle and in non-muscle cells. It contains two identical heavy chains (200 kDa each) and four light chains (15-26 kDa). Myosin molecules consist of two major regions: tail (rod) and heads; they aggregate into filaments through the tail region and interact with actin and with ATP through the head region. Multiple forms of myosin heavy chains exist for each muscle type: skeletal, cardiac, smooth and in non-muscle. Myosin isoforms exist in different types of skeletal muscle, depending on the physiological function of the muscle.
Mammalian muscle fibers are classified primarily into slow (I), fast-red (IIa) and fast-white (IIb) major types. Changes in the speed of muscle contraction brought about by neural influences result from changes in the pattern of expression of myosin and other myofibrillar genes.

Specificity

Monoclonal Anti-Myosin (Skeletal, Slow) recognizes an epitope located on the heavy meromyosin portion of human adult skeletal muscle slow myosin. Cross-reactivity has been observed with human, bovine, sheep, goat, porcine, dog, cat, rabbit, hamster, guinea pig, rat, mouse, and chicken. In rat, the product is highly specific for the slow myosin heavy chain of adult skeletal muscle. It does not react with the fast myosin heavy chain. It does not cross-react with embryonic or neonatal rat skeletal myosins, nor with cat fetal/embryonic skeletal myosin. Using immunohistochemical staining, the antibody reacts with human adult type I skeletal muscle fibers and with cardiac muscle cells. It also reacts faintly with adult human C-Fibers, co-expressing myosin heavy chain I and IIa in variable ratios. The product shows no reactivity with human or rat adult smooth muscle or with non-muscle tissues.

Reacts with human adult skeletal muscle slow myosin. Does not react with the fast myosin heavy chain nor with embryonic or neonatal rat skeletal myosins, nor with cat fetal/embryonic skeletal myosin. Also reacts with human adult type I skeletal muscle fibers and with cardiac muscle cells. No reactivity detected with human or rat adult smooth muscle or with non-muscle tissues.

Application

Monoclonal Anti-Myosin (Skeletal, Slow) may be used for the localization of slow (Type I) myosin. It may be used in immunoblotting, ELISA, solid-phase RIA, immunohistology (frozen, formalin-fixed, paraffin-embedded and methacarn-fixed paraffin-embedded tissue sections) and immunoelectronmicroscopy. Detection of slow myosin in formalin-fixed, paraffin-embedded, tissues is greatly enhanced by proteolytic digestion of the preparation.

Price and Availability


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