bs-70132R

DATASHEET

Host: Rabbit

Target Protein: Hsp70 (Ser153)

Specificity: Specific for the ~70 kDa Hsp70 phosphorylated at Ser153. Immunolabeling of Hsp70 is completely eliminated with λ-phosphatase treatment. Additional bands detected are thought to be other members of the Hsp70 family.

Modification Site: Ser153

Clonality: Polyclonal

Isotype: IgG

Entrez Gene: 3303

Swiss Prot: P0DMV8

Source: Synthetic phospho-peptide corresponding to amino acid residues surrounding Thr153 of human HSP, conjugated to keyhole limpet hemocyanin (KLH).

Purification: Antigen Affinity purification from Pooled whole antiserum

Storage Buffer: 10 mM HEPES (pH 7.5), 150 mM NaCl, 100 µg per ml BSA and 50% glycerol.

Storage: Storage at -20°C is recommended, as aliquots may be taken without freeze/thawing due to presence of 50% glycerol. Stable for at least 1 year at -20°C.

Background:

The Hsp70 family of heat shock proteins are considered stress-induced survival proteins as they are expressed when exposed to factors such as heat, hypoxia, oxidative stress, altered pH or by underlying factors like cancer (Daugaard et al. 2007). Hsp70 proteins are able to bind hydrophobic residues on misfolded proteins, thereby preventing their aggregation and thus serving important roles in protein homeostasis. To date, there have been 8 members of the family identified; the majority of which are found in the cytosol though some have specific function in tissue or an organelle (Murphy, 2013). Hsp70 has also been shown to play a major role in cancer; from tumor grade to prognosis, as well as chemotherapeutic drug resistance (Ciocca et al, 2005). There have been several phospho-serine and threonine sites identified within Hsp70, the role of each one has yet to be determined.