HSP17.7 | Cytosolic class II heat shock protein 17.7
AS07 255 | Clonality: Polyclonal | Host: Rabbit | Reactivity: A. thaliana, A. tequiliana var. Weber, C. sativus, S. vulgaris, P. ternata
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15 µg of total protein from (HS) heat shocked (38ºC/2h) Arabidopsis thaliana , (C) Arabidopsis thaliana control plants, (1,2,5,10) 1,2,5,10 ng of recombinant puridfied HSP17.7 were separated on 15% SDS-PAGE and blotted 1h to nitrocellulose (Biorad). Blots were incubated in the primary antibody at a dilution of 1: 1000 for 1h at room temperature with agitation and secondary HRP-conjugated antibody (1: 10 000). Development was done using chemiluminescent detection reagent, according to the recommendations of the manufacturers.
Image was acquired with a 10 sec exposure time on X-ray film (Kodak). Band at ~38 kDa represents and SDS resistant dimer.
Hsp17.7 belongs to a family of class II of a small heat shock proteins. They are induced once a plant cells are stressed by an increased temperature. The way small hsp proteins are protecting a living cell are not fully understood. They seem to be involved in chaperone functions by protecting other proteins from irreversible denaturation. Small hsp function also in a late seed maturation process.
Fu et al. (2019). Increased fes1a thermotolerance is induced by BAG6 knockout. Plant Mol Biol. 2019 Feb 22. doi: 10.1007/s11103-019-00844-8.
Korotaeva et al. (2018). Effect of Heat Hardening on Expression of Genes phb3 and phb4 and Accumulation of Phb Proteins in Green Leaves of Arabidopsis thaliana. Russian Journal of Plant Physiology, 65(5), 688-696, 2018. https://doi.org/10.1134/s1021443718040039
McLoughlin et al. (2016) Class I and II Small Heat Shock Proteins Together with HSP101 Protect Protein Translation Factors during Heat Stress. Plant Physiol. 2016 Oct;172(2):1221-1236.
Hattab et al. (2015). Characterisation of lead-induced stress molecular biomarkers in Medicago sativa plants. Environm. Exp. Botany. Volume 123, March 2016, Pages 1–12.
Mao and Sun (2015). Arabidopsis seed-specific vacuolar aquaporins are involved in maintaining seed longevity under the control of ABSCISIC ACID INSENSITIVE 3. J Exp Bot. 2015 May 26. pii: erv244.
Janicka-Russak et al. (2012). Different effect of cadmium and copper on H+-ATPase activity in plasma membrane vesicles from Cucumis sativus roots. J. Exp. Botany, March 2012, ahead of print.
Luján et al. (2009). Small heat-shock proteins and leaf cooling capacity account for the unusual heat tolerance of the central spike leaves in Agave tequilana var. Weber. Plant Cell Environ. 32(12):1791-803.
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