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Immunogen
Synthesized phosphopeptide derived from human HSP27 around the phosphorylation site of serine 78 (A-L-SP-R-Q).
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Antibody s target
Human HSP27 (pSer78)
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Antibody s full description
Rabbit Anti-Human HSP27 (pSer78) Polyclonal
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Primary research fields
Cancer, Heat Shock, Cardiovascular System, Atherosclerosis, Heart, Trafficking, Chaperones
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Antibody s category
Polyclonal Antibodies
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Antibody s other name
28kDa heat shock protein Antibody, CMT2F Antibody, HSP25 Antibody, HSP27 Antibody, HSP28 Antibody, HSPB1 Antibody, SRP27 Antibody
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Verified applications
WB, IHC, ICC/IF
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Raised in
Rabbit
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Antibody s reactivity
Human
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Antibody s recommended dilutions for use
WB (1:1000), IHC (1:100), ICC/IF (1:200); optimal dilutions for assays should be determined by the user.
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Antibody s purified from
Peptide Affinity Purified
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Recommended buffer for storage
PBS pH 7.4, 50% glycerol, 150mM NaCl, 0.02% sodium azide
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Antibody s concentration
See included datasheet or contact our support service
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Antibody s specificity
Detects endogenous levels of HSP27 only when phosphorylated at serine 78.
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Storage recommendations
-20°C
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Shipping recommendations
Blue Ice or 4°C
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Certificate of analysis
A 1:1000 dilution of SPC-1265 was sufficient for detection of Hsp27 in 10 µg of HeLa cell lysates by ECL immunoblot analysis using Goat Anti-Rabbit IgG:HRP as the secondary antibody.
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Antibody in cell
Cytoplasm, Nucleus
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Tissue specificity
Ubiquituous.
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Scientific context
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 α-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). Looking for more information on HSP27? Visit our new HSP27 Scientific Resource Guide at more.
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Bibliography
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.
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Released date
6/Sep/2016
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NCBI number
NP_001531.1
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Gene number
3315
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Protein number
P04792
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PubMed number
Refer to PubMed
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Tested applications
To be tested
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Tested reactivity
To be tested
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Antibody s datasheet
Contact our support service to receive datasheet or other technical documentation.
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Representative figure link
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Representative figure legend
Immunohistochemistry analysis using Rabbit Anti-Hsp27 Polyclonal Antibody (SPC-1265). Tissue: Breast Carcinoma Tissue. Species: Human. Fixation: Formalin fixed paraffin-embedded. Primary Antibody: Rabbit Anti-Hsp27 Polyclonal Antibody (SPC-1265) at 1:1000. The image on the right is treated with the synthesized peptide. | Western blot analysis of Human HeLa cell lysates showing detection of ~27kDa Hsp27 protein using Rabbit Anti-Hsp27 Polyclonal Antibody (SPC-1265). Lane 1 and Lane 2: Human HeLa, Hsp27 Antibody (Ser78). Lane 3 and Lane 4: Human HeLa, Hsp27 Antibody (pSer78). Primary Antibody: Rabbit Anti-Hsp27 Polyclonal Antibody (SPC-1265) at 1:1000. Predicted/Observed Size: ~27kDa. Rabbit Anti-Hsp27 Antibody (pSer78) used in Immunohistochemistry (IHC) on Breast Carcinoma Tissue (SPC-1265) | Rabbit Anti-Hsp27 Antibody (pSer78) used in Western blot (WB) on HeLa cell lysates (SPC-1265)
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Warning information
Non-hazardous
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Country of production
Canada
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Total weight kg
1.4
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Net weight g
0.1
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Stock availabilit
In Stock
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Description
This antibody needs to be stored at + 4°C in a fridge short term in a concentrated dilution. Freeze thaw will destroy a percentage in every cycle and should be avoided. Antibody for research use.
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Test
StressMark antibodies supplies antibodies that are for research of human proteins.
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Properties
Human proteins, cDNA and human recombinants are used in human reactive ELISA kits and to produce anti-human mono and polyclonal antibodies. Modern humans (Homo sapiens, primarily ssp. Homo sapiens sapiens). Depending on the epitopes used human ELISA kits can be cross reactive to many other species. Mainly analyzed are human serum, plasma, urine, saliva, human cell culture supernatants and biological samples.
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Group
Polyclonals and antibodies
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About
Polyclonals can be used for Western blot, immunohistochemistry on frozen slices or parrafin fixed tissues. The advantage is that there are more epitopes available in a polyclonal antiserum to detect the proteins than in monoclonal sera. Rabbits are used for polyclonal antibody production by StressMark antibodies. Rabbit antibodies are very stable and can be stored for several days at room temperature. StressMark antibodies adds sodium azide and glycerol to enhance the stability of the rabbit polyclonal antibodies. Anti-human, anti mouse antibodies to highly immunogenic selected peptide sequences are" monoclonal like" since the epitope to which they are directed is less than 35 amino acids long.
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Latin name
Oryctolagus cuniculus
