Colorimetric detection used to quantitate HSP70 in plants
HSP70 genes encode abundant heat-inducible 70-kDa HSPs (HSP70s). In most eukaryotes HSP70 genes exist as part of a multigene family. They are found in most cellular compartments of eukaryotes including nuclei, mitochondria, chloroplasts, the endoplasmic reticulum and the cytosol, as well as in bacteria. The genes show a high degree of conservation, having at least 50% identity (2). The N-terminal two thirds of HSP70s are more conserved than the C-terminal third. HSP70 binds ATP with high affinity and possesses a weak ATPase activity which can be stimulated by binding to unfolded proteins and synthetic peptides (3). When HSC70 (constitutively expressed) present in mammalian cells was truncated, ATP binding activity was found to reside in an N-terminal fragment of 44kDa which lacked peptide binding capacity. Polypeptide binding ability therefore resided within the C-terminal half (4). The structure of this ATP binding domain displays multiple features of nucleotide binding proteins (5). All HSP70s, regardless of location, bind proteins, particularly unfolded ones. The molecular chaperones of the HSP70 family recognize and bind to nascent polypeptide chains as well as partially folded intermediates of proteins preventing their aggregation and misfolding. The binding of ATP triggers a critical conformational change leading to the release of the bound substrate protein (6). The universal ability of HSP70s to undergo cycles of binding to and release from hydrophobic stretches of partially unfolded proteins determines their role in a great variety of vital intracellular functions such as protein synthesis, protein folding and oligomerization and protein transport. Looking for more information on HSP70? Visit our new HSP70 Scientific Resource Guide at more.
1. Prepare Standard and samples in Standard and Sample Diluent. 2. Add 100 µL of Standard to appropriate wells. 3. Cover plant with Plate Sealer and incubate at room temperature for 1 hour. 4. Wash plate four times with Wash Buffer. 5. Add 100 µL of Detection Antibody Working Solution to each well. 6. Cover plate with Plate Sealer and incubate at room temperature for 1 hour. 7. Wash plate four times with 1X Wash Buffer as described in step 4. 8. Add 100 µL of Streptavidin-HRP Working Solution to each well. 9. Cover plate with Plate Sealer and incubate at room temperature for 30 minutes. 10. Wash plate four times with 1X Wash Buffer as described in step 4. 11. Add 100 µL of TMB Substrate to each well. 12. Develop the plate in the dark at room temperature for 30 minutes. 13. Stop reaction by adding 100 µL of Stop Solution to each well. 14. Measure absorbance on a plate reader at 450 nm.
Anti-Hsp70 Immunoassay Plate, 5X Hsp70 Extraction Reagent, Recombinant Hsp70 (Alfalfa) Standard, Standard and Sample Diluent, 10X Wash Buffer Concentrate, Anti-Hsp70 Biotinylated Antibody Concentrate, Anti-Hsp70 Biotinylated Antibody Diluent, Streptavidin: HRP Concentrate, Streptavidin: HRP Diluent, TMB Substrate, Stop Solution
Samples to be used with this kit
Plant extract, Cell Lysates, Tissue, Serum, Plasma
Assay detection limit
1,563 - 100 ng/ml
1. Boorstein W.R., Ziegelhoffer T. & Craig E. A. (1993) J. Mol. Evol. 38(1): 1-17. 2. Rothman J. (1989) Cell. 59: 591-601. 3. DeLuca-Flaherty et al. (1990) Cell. 62: 875-887. 4. Bork P., Sander C. & Valencia A. (1992) Proc. Natl Acad. Sci. USA. 89: 7290-7294. 5. Fink A.L. (1999) Physiol. Rev. 79: 425-449.
Refer to PubMed
No data available / currently testing
No data available / currently testing
Product image legend
Typical Standard Curve for the HSP70 ELISA Kit (PLANT) (Enzyme-Linked Immunosorbent Assay) StressXpress® - SKT-124. Assay Type: Sandwich ELISA. Detection Method: Colorimetric Assay. Assay Range: 1.563 - 100 ng/mL. Graph of the Typical Standard Curve for the HSP70 ELISA Kit (PLANT) StressXpress - SKT-124
Net weight (g)
E05 478 566 350 170 or Enzyme-Linked Immunosorbent Assays,E05 478 566 350 170 or Enzyme-Linked Immunosorbent Assays
ELISA Enzyme-linked immunosorbent assays Code 90320007 SNOMED
Plants RNA, DNA , cDNA and plant tissues are used to study plant genes.