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  • A5601 - Anti-Arp1α/Centractin antibody produced in rabbit

A5601 Sigma-Aldrich

Anti-Arp1α/Centractin antibody produced in rabbit

IgG fraction of antiserum, buffered aqueous solution



Related Categories AR-AR, Alphabetical Index, Antibodies, Antibodies for Cell Biology, Antibodies to Actin-associated Proteins/Myosin,
conjugate   unconjugated
clone   polyclonal
biological source   rabbit
application(s)   indirect immunofluorescence: 1:100 using mouse fibroblasts NIH3T3 cell line
  microarray: suitable
  western blot: 1:1,000 using rat brain cytosol extract or whole cell extract of human epidermoid carcinoma A431 cell line.
species reactivity   human, rat, mouse
mol wt   antigen 45 kDa
form   buffered aqueous solution
shipped in   dry ice
storage temp.   −20°C
antibody form   IgG fraction of antiserum
antibody product type   primary antibodies
UniProt accession no.   P61163
Gene Information   human ... ACTR1A(10121)
mouse ... Actr1a(54130)
rat ... Actr1a(294010)


General description

The actin-related protein Arp1α (centractin, actin-RPV), a member of the superfamily of actin-related proteins (Arp), is the major subunit of the dynactin complex, a key component of the cytoplasmic dynein motor machinery. It has been shown to localize to multiple structures within the cell, including membrane organelles, the centrosome, spindle poles, and spindle pole microtubules during mitosis and prometaphase kinetochores.


synthetic peptide corresponding to the mid-region of human Arp1α/centractin (amino acids 222-240). This sequence is identical in mouse and dog Arp1α/centractin, highly conserved (89% identity) in the α-centractin isoform, and not found in known actin isoforms.


Anti-Arp1α/Centractin antibody produced in rabbit has been used in immunoblotting and immunofluorescence staining.

Physical form

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Biochem/physiol Actions

Arp1α or Centractin is an actin-related, ubiquitious protein that forms a part of the dynactin complex and is associated with centrosomes. Studies have reported that centractin interacts with spectrin and subsequently provides a link for dynactin to associate with organelles in cells.

The actin-related proteins (Arp)1α/dynactin complex regulates dyne mediated vesicle movement on microtubules as well as spindle assembly and cell division. Arp1α overexpression in cells results in aberrant spindle morphologies and cell cycle delay at prometaphase, suggesting a possible function of Arp1α/dynactin complex in progression through the prometaphase of mitosis. Expression of mutant Arp1a protein has no effect on mitotic cells, but results in microtubule disruption in interphase cells, by destabilizing the interaction between Arp1a and components of the dynactin complex and nuclear mitotic apparatus protein (NuMA).

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
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Western Blot Protocol | Immunoblotting Protocol

Western Blotting refers to the electrophoretic transfer of proteins from sodium dodecyl sulfate polyacrylamide gels to sheets of PVDF or nitrocellullose membrane, followed by immunodetection of prote...
Keywords: AGE, Buffers, Cell disruption, Detection methods, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

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