Exalpha Biologicals, Inc.

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FIX&PERM Cell Fixation and Permeabilization Kit

Flow cytometric analyses with monoclonal antibodies were so far mainly restricted to cell surface molecules. Intracellular structures such as cytoplasmic or nuclear enzymes, oncoproteins, cytokines, immunoglobulins etc. were largely excluded from such studies. Also excluded from flow cytometric studies were cytoplasmic localizations of well-established membrane molecules like CD3 and CD22, which, in their cytoplasmic form, are the most reliable lineage markers in undifferentiated leukemia. With the FIX&PERM® Kit flow cytometric analysis of intracellular antigens has become as easy as surface antigen studies. The only prerequisite is the availability of suitable antibody conjugates. Most of the available monoclonal antibody conjugates can be used with the FIX&PERM® Kit, some determinants are sensitive, however, to the fixation step involved. This and the optimal fixation time have to be tested for each reagent.

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Exalpha Biologicals, Inc.

Rap 2A

  • Product Code: X1213
  • Size: 25 µg
  • Availability: In Stock In Stock
  • Price (USD): $283

Cat #

X1213		 Quantity:      

Data Sheet

Product Name

Rap 2A

Synonyms

Rap 2A Recombinant G-Protein, G protein

Host/Source

N/A

Clone

N/A

Isotype

N/A

Product Type

Recombinant Protein

Reactivity

Human

Applications

Affinity Binding

Size

25 µg

Price (USD)

$283

Background

Rap2B is a 21 kDa small GTP-binding protein that that exhibits 46% identity with Ras proteins and is similarly post-translationally modified by farnesyl and palmitate groups. It colocalizes with several markers of the Golgi complex, thus indicating that its site of function was distinct from that of Rap1A. In contrast to Rap1A, Rap2B protein does not interfere with Ras-induced transformation suggesting that the activity of Rap proteins goes beyond the regulation of Ras protein function. Ras proteins provide a crucial link in the intracellular signalling cascades. Ras proteins are members of the small G protein family. These proteins are characterized by a molecular weight between 20 and 30 kDa, the ability to bind GTP or GDP and a low intrinsic GTPase activity. These proteins relay signals from the plasma membrane activated by receptor tyrosine kinases to the nucleus via a network of serine/threonine kinases. Ras proteins belong to a family of approximately 40 mammalian and 60 non-mammalian proteins. Ras proteins were first discovered as the hyperactive products of mutant Ras genes which promote cancer by disrupting the normal controls on cell proliferation and differentiation; about 30% of human cancers have mutations in a Ras gene.

Immunogen

Recombinant full length human Rap1A protein expressed in e.coli

Formulation

Provided in 50mM Tris (pH 7.5) solution containing 150 mM NaCl, 10 mM MgCl2, 1 mM DTT, 10% glycerol

Customer Storage

Product should be stored at -70°C. Aliquot to avoid freeze/thaw cycles

Database Links:

SwissProtP10114Human

References

1. Pizon, V., et al. 'Association of Rap1a and Rap1b proteins with late endocytic/phagocytic compartments and Rap2a with the Golgi complex.' J. Cell. Sci. 1994, 107, 1661-1670
2. Pasheva, E., et al. 'Characterization of the Ras-related RAP2A protein expressed in the baculovirus-insect cell system: processing of the protein in insect cells and comparison with the bacterially produced unprocessed form.' Biochem. Biophys. Res. Commun. 1994, 198, 973-982

3. Ohba, Y., et al. 'Rap2 as a slowly responding molecular switch in the Rap1 signaling cascade.' Mol. Cell Biol. 2000, 20, 6074-6083