HSP90AB1 ELISA Kit (Human)

Intra-assay Precision (Precision within an assay) : 3 samples with low, middle and high level Heat Shock Protein 90kDa Alpha B1 (HSP90aB1) were tested 20 times on one plate, respectively. Inter-assay Precision (Precision between assays) : 3 samples with low, middle and high level Heat Shock Protein 90kDa Alpha B1 (HSP90aB1) were tested on 3 different plates, 8 replicates in each plate. CV (%) = SD/meanX100 Intra-Assay: CV<10% Inter-Assay: CV<12%

D6S182; heat shock 84 kDa; heat shock 90kD protein 1, beta; heat shock protein 90 kDa; heat shock protein 90kDa alpha (cytosolic), class B member 1; heat shock protein 90kDa alpha family class B member 1; heat shock protein HSP 90-beta; HSP84; HSP90B; HSP90-beta; HSPC2; HSPCB.

Molecular chaperone that promotes the maturation, structural maintenance and proper regulation of specific target proteins involved for instance in cell cycle control and signal transduction. Undergoes a functional cycle that is linked to its ATPase activity. This cycle probably induces conformational changes in the client proteins, thereby causing their activation. Interacts dynamically with various co-chaperones that modulate its substrate recognition, ATPase cycle and chaperone function (PubMed:16478993, PubMed:19696785) . Engages with a range of client protein classes via its interaction with various co-chaperone proteins or complexes, that act as adapters, simultaneously able to interact with the specific client and the central chaperone itself. Recruitment of ATP and co-chaperone followed by client protein forms a functional chaperone. After the completion of the chaperoning process, properly folded client protein and co-chaperone leave HSP90 in an ADP-bound partially open conformation and finally, ADP is released from HSP90 which acquires an open conformation for the next cycle (PubMed:27295069, PubMed:26991466) . Apart from its chaperone activity, it also plays a role in the regulation of the transcription machinery. HSP90 and its co-chaperones modulate transcription at least at three different levels. In the first place, they alter the steady-state levels of certain transcription factors in response to various physiological cues. Second, they modulate the activity of certain epigenetic modifiers, such as histone deacetylases or DNA methyl transferases, and thereby respond to the change in the environment. Third, they participate in the eviction of histones from the promoter region of certain genes and thereby turn on gene expression (PubMed:25973397) . Antagonizes STUB1-mediated inhibition of TGF-beta signaling via inhibition of STUB1-mediated SMAD3 ubiquitination and degradation (PubMed:24613385) . Promotes cell differentiation by chaperoning BIRC2 and thereby protecting from auto-ubiquitination and degradation by the proteasomal machinery (PubMed:18239673) . Main chaperone that is involved in the phosphorylation/activation of the STAT1 by chaperoning both JAK2 and PRKCE under heat shock and in turn, activates its own transcription (PubMed:20353823) .

The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Heat Shock Protein 90kDa Alpha B1 (HSP90aB1) . Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated antibody specific to Heat Shock Protein 90kDa Alpha B1 (HSP90aB1) . Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Heat Shock Protein 90kDa Alpha B1 (HSP90aB1), biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm +/- 10nm. The concentration of Heat Shock Protein 90kDa Alpha B1 (HSP90aB1) in the samples is then determined by comparing the O.D. of the samples to the standard curve.

Reconstitution & Storage Instructions Western Blotting/Immunoblotting (WB/IB) Protocol Immunohistochemistry (IHC) Protocol Immunocytochemistry (ICC) Protocol Enzyme-Linked ImmunoSorbent Assay (ELISA) Protocol Blocking Peptide Competition Protocol (BPCP) Immunoprecipitation (IP) Protocol Antibody Array (AA) Protocol Reconstitution & Storage Instructions Reconstitution & Storage Instructions Western Blotting/Immunoblotting (WB/IB) Protocol Western Blotting/Immunoblotting (WB/IB) Protocol Immunohistochemistry (IHC) Protocol Immunohistochemistry (IHC) Protocol Immunocytochemistry (ICC) Protocol Immunocytochemistry (ICC) Protocol Enzyme-Linked ImmunoSorbent Assay (ELISA) Protocol Enzyme-Linked ImmunoSorbent Assay (ELISA) Protocol Blocking Peptide Competition Protocol (BPCP) Blocking Peptide Competition Protocol (BPCP) Immunoprecipitation (IP) Protocol Immunoprecipitation (IP) Protocol Antibody Array (AA) Protocol Antibody Array (AA) Protocol

Matrix Recovery Range (%) Average (%) _x005F serum (n=5) 93-102 98 _x005F EDTA plasma (n=5) 90-103 94 _x005F heparin plasma (n=5) 95-102 98 _x005F Matrix Recovery Range (%) Average (%) Matrix Recovery Range (%) Average (%) serum (n=5) 93-102 98 serum (n=5) 93-102 98 EDTA plasma (n=5) 90-103 94 EDTA plasma (n=5) 90-103 94 heparin plasma (n=5) 95-102 98 heparin plasma (n=5) 95-102 98

Component Amount _x005F Anti-HSP90AB1 Microplate 96 Wells (12 x 8 Well Strips) _x005F HSP90AB1 Lyophilized Standard 2 x 100 ng _x005F 100X Biotinylated HSP90AB1 Detector Antibody 120 uL _x005F Avidin/HRP Conjugate 120 uL _x005F Standard Diluent 1 x 20 mL _x005F Detector Antibody Diluent 1 x 12 mL _x005F Conjugate Diluent 1 x 12 mL _x005F 30X Wash Buffer 1 x 20 mL _x005F TMB Substrate 1 x 9 mL _x005F Stop Solution 1 x 6 mL _x005F Component Amount Component Amount Anti-HSP90AB1 Microplate 96 Wells (12 x 8 Well Strips) Anti-HSP90AB1 Microplate 96 Wells (12 x 8 Well Strips) HSP90AB1 Lyophilized Standard 2 x 100 ng HSP90AB1 Lyophilized Standard 2 x 100 ng 100X Biotinylated HSP90AB1 Detector Antibody 120 uL 100X Biotinylated HSP90AB1 Detector Antibody 120 uL Avidin/HRP Conjugate 120 uL Avidin/HRP Conjugate 120 uL Standard Diluent 1 x 20 mL Standard Diluent 1 x 20 mL Detector Antibody Diluent 1 x 12 mL Detector Antibody Diluent 1 x 12 mL Conjugate Diluent 1 x 12 mL Conjugate Diluent 1 x 12 mL 30X Wash Buffer 1 x 20 mL 30X Wash Buffer 1 x 20 mL TMB Substrate 1 x 9 mL TMB Substrate 1 x 9 mL Stop Solution 1 x 6 mL Stop Solution 1 x 6 mL

This assay has high sensitivity and excellent specificity for detection of Heat Shock Protein 90kDa Alpha B1 (HSP90aB1) ._x005F No significant cross-reactivity or interference between Heat Shock Protein 90kDa Alpha B1 (HSP90aB1) and analogues was observed.