Rabbit anti-Human Hsp27 Polyclonal Antibody | anti-HSPB1 antibody

Hsp27 Antibody

Cat. Num. AAA806612

• Gene Names: HSPB1; CMT2F; HMN2B; HSP27; HSP28; Hsp25; SRP27; HS.76067; HEL-S-102
• Reactivity: Human
• Applications: Western Blot
• Synonyms: Hsp27; Polyclonal Antibody; Hsp27 Antibody; 28kDa heat shock protein; CMT2F; Hsp25; Hsp28; HspB1; SRP27; anti-HSPB1 antibody

• Host: Rabbit
• Reactivity: Human
• Clonality: Polyclonal
• Form/Format: Protein A Purified
• Concentration: 1.38mg/mL (varies by lot)
• Sequence Length: 205

• Applicable Applications for anti-HSPB1 antibody: Western Blot (WB)
• Application Notes: 1:1000-2000 (WB)
• Certificate of Analysis: A 1:2,000 dilution of SPC-106 was sufficient for detection of hsp27 in 20ug of HeLa cell lysate by ECL immunoblot analysis.
• Storage Buffer: PBS, 50% glycerol, 0.09% sodium azide
• Preparation and Storage: -20 degree C

Western Blot (WB)

(Western blot analysis of Human Cervical cancer cell line (HeLa) lysate showing detection of HSP27 protein using Rabbit Anti-HSP27 Polyclonal Antibody (SPC-106). Load: 15 ugprotein. Block: 1.5% BSA. Primary Antibody: Rabbit Anti-HSP27 Polyclonal Antibody (SPC-106) at 1:2000 for 2 hours at RT. Secondary Antibody: Donkey Anti-Rabbit IgG: HRP for 1 hour at RT.)

Related Product Information for anti-HSPB1 antibody

Background Info: Detects ~27kDa proteins corresponding to Hsp27 on SDS Page immunoblots.

Scientific Background: Hsp27s belong to an abundant and ubiquitous family of small heat shock proteins (sHSP). It is an important HSP found in both normal human cells and cancer cells. The basic structure of most sHsps is a homologous and highly conserved amino acid sequence, with an alpha-crystallin domain at the C-terminus and the WD/EPF domain at the less conserved N-terminus. This N-terminus is essential for the development of high molecular oligomers (1, 2). Hsp27-oligomers consist of stable dimers formed by as many as 8-40 Hsp27 protein monomers (3). The oligomerization status is connected with the chaperone activity: aggregates of large oligomers have high chaperone activity, whereas dimers have no chaperone activity (4). HSP27 is localized to the cytoplasm of unstressed cells but can redistribute to the nucleus in response to stress, where it may function to stabilize DNA and/or the nuclear membrane. Other functions include chaperone activity (as mentioned above), thermo tolerance in vivo, inhibition of apoptosis, and signal transduction. Specifically, in vitro, it acts as an ATP-independent chaperone by inhibiting protein aggregation and by stabilizing partially denatured proteins, which ensures refolding of the HSP70 complex. Hsp27 is also involved in the apoptotic signaling pathway because it interferes with the activation of cytochrome c/Apaf-1/dATP complex, thereby inhibiting the activation of procaspase-9. It is also hypothesized that hsp27 may serve some role in cross-bridge formation between actin and myosin (5). And finally, Hsp27 is also thought to be involved in the process of cell differentiation. The up-regulation of Hsp27 correlates with the rate of phosphorylation and with an increase of large oligomers. It is possible that Hsp27 may play a crucial role in termination of growth (6).

Product Categories/Family for anti-HSPB1 antibody

Heat Shock

References

1. Kim K.K., Kim R., and Kim, S. (1998) Nature 394(6693): 595-599. 2. Van Montfort R., Slingsby C., and Vierling E. (2001) Addv Protein Chem. 59: 105-56. 3. Ehrnsperger M., Graber S., Gaestel M. and Buchner J. (1997) EMBO J. 16: 221-229. 4. Ciocca D.R., Oesterreich S., Chamness G.C., McGuire W.L., and Fugua S.A. (1993) J Natl Cancer Inst. 85 (19): 1558-70. 5. Sarto C., Binnz P.A., and Mocarelli P. (2000) Electrophoresis. 21(6): 1218-26. 6. Arrigo A.P. (2005) J Cell Biochem. 94(2): 241-6.

NCBI and Uniprot Product Information

• NCBI GI #: 4504517
• NCBI GeneID: 3315
• NCBI Accession #: NP_001531.1
• NCBI GenBank Nucleotide #: NM_001540.3
• UniProt Accession #: P04792; Q6FI47; Q96C20; Q96EI7; Q9UC31; Q9UC34; Q9UC35; Q9UC36; B2R4N8
• Molecular Weight: 22,783 Da
• NCBI Official Full Name: heat shock protein beta-1
• NCBI Official Synonym Full Names: heat shock 27kDa protein 1
• NCBI Official Symbol: HSPB1
• NCBI Official Synonym Symbols: CMT2F; HMN2B; HSP27; HSP28; Hsp25; SRP27; HS.76067; HEL-S-102
• NCBI Protein Information: heat shock protein beta-1; HSP 27; 28 kDa heat shock protein; heat shock 27 kDa protein; heat shock 27kD protein 1; stress-responsive protein 27; estrogen-regulated 24 kDa protein; epididymis secretory protein Li 102
• UniProt Protein Name: Heat shock protein beta-1
• Protein Family: Heat shock protein
• UniProt Gene Name: HSPB1
• UniProt Synonym Gene Names: HSP27; HSP28; HspB1; HSP 27; SRP27
• UniProt Entry Name: HSPB1_HUMAN

NCBI Description

The protein encoded by this gene is induced by environmental stress and developmental changes. The encoded protein is involved in stress resistance and actin organization and translocates from the cytoplasm to the nucleus upon stress induction. Defects in this gene are a cause of Charcot-Marie-Tooth disease type 2F (CMT2F) and distal hereditary motor neuropathy (dHMN). [provided by RefSeq, Oct 2008]

Uniprot Description

HSP27: a small heat shock protein that is regulated both transcriptionally and posttranslationally. Modulates actin polymerization and reorganization. Its expression level increases several-fold in response to stress and is phosphorylated by MAPKAP kinase 2. Cytoplasmic in interphase cells. Colocalizes with mitotic spindles in mitotic cells. Translocates to the nucleus during heat shock.

Protein type: Chaperone; Heat shock protein; Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 7q11.23

Cellular Component: proteasome complex; extracellular space; focal adhesion; cytoskeleton; cytoplasm; plasma membrane; spindle; nucleus; cytosol; Z disc

Molecular Function: identical protein binding; protein kinase C inhibitor activity; protein binding; ubiquitin binding; protein kinase C binding; protein kinase binding

Biological Process: positive regulation of tumor necrosis factor biosynthetic process; response to virus; positive regulation of blood vessel endothelial cell migration; response to unfolded protein; positive regulation of interleukin-1 beta production; retinal homeostasis; positive regulation of angiogenesis; negative regulation of protein kinase activity; gene expression; regulation of I-kappaB kinase/NF-kappaB cascade; vascular endothelial growth factor receptor signaling pathway; cell motility; negative regulation of apoptosis; regulation of translational initiation

Disease: Neuronopathy, Distal Hereditary Motor, Type Iib; Charcot-marie-tooth Disease, Axonal, Type 2f