Beta-actin (human gene and protein abbreviation ACTB/ACTB) is one of six different actin isoforms which have been identified in humans. This is one of the two nonmuscle cytoskeletal actins. Actins are highly conserved proteins that are involved in cell motility, structure and integrity. Alpha actins are a major constituent of the contractile apparatus. Beta-actin has been shown to interact with SPTBN2. In addition, RNA-binding protein Sam68 was found to interact with the mRNA encoding β-actin, which regulates the synaptic formation of the dendritic spines with its cytoskeletal components. Beta-actin has been shown to activate eNOS, thereby increasing NO production. An eight-amino acid residue (326-333) in actin has been shown to mediate the interaction between actin and eNOS. Recurrent mutations in this gene have been associated to cases of diffuse large B-cell lymphoma. Beta actin is often used in Western blotting as a loading control, to normalize total protein amounts and check for eventual protein degradation in the samples. Its transcript is also commonly used as a housekeeping gene standard in qPCR. Its molecular weight is approximately 42 kDa.
Background References
1. Fujiki R et al. GlcNAcylation of a histone methyltransferase in retinoic-acid-induced granulopoiesis. Nature 459:455-459 (2009).
Western blot analysis of beta Actin on different lysates with Mouse anti-beta Actin antibody (HA601585H) at 1/2,000 dilution.
Lane 1: Mouse brain tissue lysate Lane 2: Mouse liver tissue lysate Lane 3: Rat brain tissue lysate Lane 4: Rat liver tissue lysate Lane 4: Pig brain tissue lysate
Lysates/proteins at 10 µg/Lane.
Predicted band size: 42 kDa Observed band size: 42 kDa
Exposure time: 34 seconds; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA601585H, HRP) at 1/2,000 dilution was used in primary antibody dilution buffer (K1803) at room temperature for 1 hour.
Western blot analysis of beta Actin on different lysates with Mouse anti-beta Actin antibody (HA601585H) at 1/5,000 dilution.
Lane 1: HeLa cell lysate Lane 2: HEK-293 cell lysate Lane 3: NIH/3T3 cell lysate Lane 4: RAW264.7 cell lysate Lane 5: C6 cell lysate Lane 6: PC-12 cell lysate Lane 7: COS-1 cell lysate
Lysates/proteins at 10 µg/Lane.
Predicted band size: 42 kDa Observed band size: 42 kDa
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA601585H, HRP) at 1/2,000 dilution was used in primary antibody dilution buffer (K1803) at room temperature for 1 hour.
Western blot analysis of beta Actin on different lysates with Mouse anti-beta Actin antibody (HA601585H) at 1/5,000 dilution.
Lane 1: Mouse lung tissue lysate Lane 2: Mouse spleen tissue lysate Lane 3: Mouse colon tissue lysate Lane 3: Rat lung tissue lysate Lane 4: Rat spleen tissue lysate Lane 4: Rat colon tissue lysate
Lysates/proteins at 10 µg/Lane.
Predicted band size: 42 kDa Observed band size: 42 kDa
Exposure time: 10 seconds; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA601585H, HRP) at 1/5,000 dilution was used in primary antibody dilution buffer (K1803) at room temperature for 1 hour.
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