Heat shock cognate 71 kDa protein (Hspa8) Recombinant Protein | Hspa8 recombinant protein
Recombinant Rat Heat shock cognate 71 kDa protein (Hspa8)
NCBI and Uniprot Product Information
NCBI Description
member of the hsp70 protein; expressed in unstressed cells [RGD, Feb 2006]
Uniprot Description
Molecular chaperone implicated in a wide variety of cellular processes, including protection of the proteome from stress, folding and transport of newly synthesized polypeptides, activation of proteolysis of misfolded proteins and the formation and dissociation of protein complexes. Plays a pivotal role in the protein quality control system, ensuring the correct folding of proteins, the re-folding of misfolded proteins and controlling the targeting of proteins for subsequent degradation. This is achieved through cycles of ATP binding, ATP hydrolysis and ADP release, mediated by co-chaperones. The co-chaperones have been shown to not only regulate different steps of the ATPase cycle of HSP70, but they also have an individual specificity such that one co-chaperone may promote folding of a substrate while another may promote degradation. The affinity of HSP70 for polypeptides is regulated by its nucleotide bound state. In the ATP-bound form, it has a low affinity for substrate proteins. However, upon hydrolysis of the ATP to ADP, it undergoes a conformational change that increases its affinity for substrate proteins. HSP70 goes through repeated cycles of ATP hydrolysis and nucleotide exchange, which permits cycles of substrate binding and release. The HSP70-associated co-chaperones are of three types: J-domain co-chaperones HSP40s (stimulate ATPase hydrolysis by HSP70), the nucleotide exchange factors (NEF) such as BAG1/2/3 (facilitate conversion of HSP70 from the ADP-bound to the ATP-bound state thereby promoting substrate release), and the TPR domain chaperones such as HOPX and STUB1. Acts as a repressor of transcriptional activation. Inhibits the transcriptional coactivator activity of CITED1 on Smad-mediated transcription. Component of the PRP19-CDC5L complex that forms an integral part of the spliceosome and is required for activating pre-mRNA splicing. May have a scaffolding role in the spliceosome assembly as it contacts all other components of the core complex. Binds bacterial lipopolysaccharide (LPS) and mediates LPS-induced inflammatory response, including TNF secretion. Participates in the ER-associated degradation (ERAD) quality control pathway in conjunction with J domain-containing co-chaperones and the E3 ligase STUB1.
Research Articles on Hspa8
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Product Notes
The Hspa8 hspa8 (Catalog #AAA965026) is a Recombinant Protein produced from E Coli or Yeast or Baculovirus or Mammalian Cell and is intended for research purposes only. The product is available for immediate purchase. The immunogen sequence is 2-646, Full length protein. The amino acid sequence is listed below: SKGPAVGIDL GTTYSCVGVF QHGKVEIIAN DQGNRTTPSY VAFTDTERLI GDAAKNQVAM NPTNTVFDAK RLIGRRFDDA VVQSDMKHWP FMVVNDAGRP KVQVEYKGET KSFYPEEVSS MVLTKMKEIA EAYLGKTVTN AVVTVPAYFN DSQRQATKDA GTIAGLNVLR IINEPTAAAI AYGLDKKVGA ERNVLIFDLG GGTFDVSILT IEDGIFEVKS TAGDTHLGGE DFDNRMVNHF IAEFKRKHKK DISENKRAVR RLRTACERAK RTLSSSTQAS IEIDSLYEGI DFYTSITRAR FEELNADLFR GTLDPVEKAL RDAKLDKSQI HDIVLVGGST RIPKIQKLLQ DFFNGKELNK SINPDEAVAY GAAVQAAILS GDKSENVQDL LLLDVTPLSL GIETAGGVMT VLIKRNTTIP TKQTQTFTTY SDNQPGVLIQ VYEGERAMTK DNNLLGKFEL TGIPPAPRGV PQIEVTFDID ANGILNVSAV DKSTGKENKI TITNDKGRLS KEDIERMVQE AEKYKAEDEK QRDKVSSKNS LESYAFNMKA TVEDEKLQGK INDEDKQKIL DKCNEIISWL DKNQTAEKEE FEHQQKELEK VCNPIITKLY QSAGGMPGGM PGGFPGGGAP PSGGASSGPT IEEVD. It is sometimes possible for the material contained within the vial of "Heat shock cognate 71 kDa protein (Hspa8), Recombinant Protein" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
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