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H0273

Sigma-Aldrich

Monoclonal Anti-Heat Shock Protein 25 antibody produced in mouse

clone IAP-28, ascites fluid

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About This Item

MDL number:
UNSPSC Code:
12352203
NACRES:
NA.41

biological source

mouse

conjugate

unconjugated

antibody form

ascites fluid

antibody product type

primary antibodies

clone

IAP-28, monoclonal

mol wt

antigen 25 kDa

contains

15 mM sodium azide

species reactivity

chicken, bovine, frog, rabbit, guinea pig, turkey, Drosophila, mouse, rat, human

technique(s)

immunohistochemistry: suitable using frozen sections of chicken gizzard smooth muscle
indirect ELISA: suitable
indirect immunofluorescence: suitable using formalin-fixed, heat-shocked cultured chick embryo fibroblasts
radioimmunoassay: suitable
western blot: 1:500 using turkey gizzard extract

isotype

IgG1

UniProt accession no.

shipped in

dry ice

storage temp.

−20°C

target post-translational modification

unmodified

Gene Information

human ... HSPB1(3315)
mouse ... Hspb1(15507)
rat ... Hspb1(24471)

General description

Monoclonal anti-Heat Shock Protein 25 (mouse IgG1) isotype) is derived from the IAP-28 hybridoma produced by the fusion of mouse myeloma cells and splenocytes from BALB/c mice immunized with partially purified inhibitor of actin polymerization (IAP) protein from turkey gizzard smooth muscle. Heat shock (stress) proteins (HSPs) are a group of polypeptides synthesized in response to a wide variety of environmental factors, including biotic and abiotic stressors. These proteins are produced by prokaryotic and eukaryotic cells, and HSPs are among the most conserved molecules in phylogeny. Heat shock protein 25 is encoded by the gene mapped to human chromosome 7q11.23. The encoded protein belongs to the class of small HSPs. Small HSPs aggregate to form characteristic ring-shaped structures called heat shock granules. Small HSPs contains a-crystallin domain” (ACD) C-terminal domain, N-terminal domain and C-terminal extension (CTE).

Specificity

The antibody also reacts with a dimer of the HSP 25 (approx. 58 kDa) appearing in preparations stored for prolonged periods prior to electrophoretic analysis. A major proteolytic fragment of 22 kDa may also be detected. The antibody suppresses the inhibition of actin elongation induced by the 25 kDa IAP. The antibody displays a punctate or fine fibrillary pattern of labeling throughout the cytoplasm in heat-shocked cells and co-localization with mitochondria. Reactivity has been observed with HSP 25 of various organs.

Immunogen

partially purified inhibitor of actin polymerization (IAP) protein from turkey gizzard smooth muscle.

Application

Monoclonal Anti-Heat Shock Protein 25 antibody produced in mouse has been used in:
  • immunoblotting
  • enzyme linked immunosorbent assay (ELISA)
  • radioimmunoassay (RIA)
  • immunocytochemistry
  • immunohistofluorescence assay
  • immunopurification

Biochem/physiol Actions

Small heat shock proteins (HSPs) play a vital role in stress tolerance. They act as molecular chaperones in vitro. Murine Hsp25 averts aggregation of citrate synthase and α-glucosidase. It also inhibits actin polymerization and the amyloid fibril formation of Aβ1-42. Mutations in human sHsps result in myopathies, neuropathies and cataract. The small HSPs have also been implicated in phenomena of acquired thermotolerance and neoplasia.

Physical form

The product is provided as ascites fluid with 0.1% sodium azide as a preservative.

Storage and Stability

For continuous use, store at 2-8 °C. For extended storage, the solution may be frozen in working aliquots. Repeated freezing and thawing is not recommended. Storage in "frost-free" freezers is not recommended. If slight turbidity occurs upon prolonged storage, clarify the solution by centrifugation before use.

Disclaimer

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.

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Storage Class Code

10 - Combustible liquids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Stéphane Woerly et al.
Neurochemical research, 30(6-7), 721-735 (2005-09-28)
We recently showed a successful reconstruction of the cat spinal cord using NeuroGel a polymer hydrogel bridge between the two spinal stumps. The polymer graft supports axonal elongation, myelination and angiogenesis up to 21 months, Wallerian degeneration was diminished and
Small heat shock proteins: role in cellular functions and pathology
Bakthisaran R, et al.
Biochimica et Biophysica Acta (BBA)-Proteins and Proteomics, 1854(4), 291-319 (2015)
Human alpha B-crystallin mutation causes oxido-reductive stress and protein aggregation cardiomyopathy in mice
Rajasekaran NS, et al.
Cell, 130(3), 427-439 (2007)
T Miron et al.
European journal of biochemistry, 178(2), 543-553 (1988-12-15)
We report here on the purification and characterization of a new 25-kDa inhibitor of actin polymerization from turkey gizzard smooth muscle. The protein was purified by chromatography on DEAE-cellulose and hydroxyapatite, as well as by affinity chromatography on an immobilized-antibody
T Miron et al.
The Journal of cell biology, 114(2), 255-261 (1991-07-01)
The 25-kD inhibitor of actin polymerization (25-kD IAP), isolated from turkey smooth muscle (Miron, T., M. Wilchek, and B. Geiger, 1988. Eur. J. Biochem. 178:543-553), is shown here to be a low molecular mass heat shock protein (HSP). Direct sequence

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