HSP27 Antibody (G3.1) - IHC-Prediluted

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-44973

Novus Biologicals, part of Bio-Techne
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Key Product Details

Species Reactivity

Human, Mouse, Rat, Chicken, Chimpanzee, Monkey, Sheep

Applications

Immunohistochemistry, Immunohistochemistry-Paraffin

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG1 kappa Clone # G3.1

Format

IHC-Prediluted

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

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Product Specifications

Immunogen

Partially purified hsp27 (earlier called 24K) protein from breast cancer MCF-7 cells.

Localization

Predominantly cytoplasmic with some nuclear

Specificity

monoclonal antibody G3.1 reacts specifically with heat shock protein HSP27 in human and monkey tissues and cell lines such as MCF-7. HSP27, also referred to as the Estrogen-Regulated 24K protein and HSP28, is one of several small heat shock proteins produced by all organisms studied. HSP27 synthesis is induced by elevated temperature, as well as by estrogen in hormone responsive cells. Interestingly, human HSP27 also shares greater than 50% homology with low molecular weight Drosophila HSPs and mammalian alpha-crystalline lens protein. Because of the estrogen responsive nature of HSP27, this protein has been studied extensively in human estrogen responsive tissues such as cervix, endometrium and breast tissue. Therefore, HSP27 may be useful in classifying various hormone sensitive tumors.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG1 kappa

Theoretical MW

27 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Description

The prediluted antibody does not require any mixing, dilution, reconstitution, or titration; the antibody is ready-to-use and optimized for staining.

Scientific Data Images for HSP27 Antibody (G3.1) - IHC-Prediluted

Immunohistochemistry-Paraffin: HSP27 Antibody (G3.1) - IHC-Prediluted [NBP2-44973]

Immunohistochemistry-Paraffin: HSP27 Antibody (G3.1) - IHC-Prediluted [NBP2-44973]

Immunohistochemistry-Paraffin: HSP27 Antibody (G3.1) - IHC-Prediluted [NBP2-44973] - Formalin-fixed. paraffin-embedded human Breast Carcinome stained with HSP27 Monoclonal Antibody (G3.1)
Immunohistochemistry-Paraffin: HSP27 Antibody (G3.1) - IHC-Prediluted [NBP2-44973]

Immunohistochemistry-Paraffin: HSP27 Antibody (G3.1) - IHC-Prediluted [NBP2-44973]

Immunohistochemistry-Paraffin: HSP27 Antibody (G3.1) - IHC-Prediluted [NBP2-44973] - Formalin-fixed. paraffim-embedded human prostate Carcinoma stained with HSP27 Monoclonal Antibody (G3.1)

Applications for HSP27 Antibody (G3.1) - IHC-Prediluted

Application
Recommended Usage

Immunohistochemistry-Paraffin

0.5 - 1.0 ug/ml
Application Notes
Immunohistochemistry (Formalin-fixed): 1-2ug/ml for 30 minutes at RT. Staining of formalin-fixed tissues requires heating tissue sections in 10mM Tris with 1mM EDTA, pH 9.0, for 45 min at 95C followed by cooling at RT for 20 minutes.
Optimal dilution for a specific application should be determined.

Formulation, Preparation, and Storage

Purification

Protein A or G purified

Formulation

10 mM PBS with 0.05% BSA

Format

IHC-Prediluted

Preservative

0.05% Sodium Azide

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C.

Background: HSP27

Hsp25 is the mouse homologue of the human Hsp27 protein, a member of the small heat shock protein family comprised of a diverse group of proteins from approx. 15 to >30kDa(1). 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 (2, 3). Hsp27-oligomers consist of stable dimers formed by as many as 8-40 Hsp27 protein monomers (4). The oligomerization status is connected with the chaperone activity: aggregates of large oligomers have high chaperone activity, whereas dimers have no chaperone activity (5). 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. It can be rapidly phosphorylated in response to physiological stimuli relevant to the cell type examined. Thus, hsp27 has been suggested to be an important intermediate in second messenger mediated signaling pathways (6). Other functions include chaperone activity (as mentioned above), thermotolerance 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 (7). 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 (8).

Long Name

Heat Shock Protein 27

Alternate Names

HSP25, HSPB1

Gene Symbol

HSPB1

Additional HSP27 Products

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Product Specific Notices for HSP27 Antibody (G3.1) - IHC-Prediluted

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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