| Structural highlights
Function
HS90A_HUMAN 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.[1] [2]
Publication Abstract from PubMed
Using a 2,3-diamino pyrazine substrate and yttrium triflate catalyst, various 2-alkyl and aryl substituted 3,8-diaminoimidazo[1,2-a]pyrazines were efficiently prepared through Groebke-Blackburn-Bienayme MCR. In particular, a novel 2-piperonyl 3,8-diaminoimidazo[1,2-a]pyrazine structure was prepared exclusively with this new method and was found to have moderate Hsp90 inhibitory activity. A crystalline complex with N-terminus ATP domain of Hsp90 and one of the new Hsp90 inhibitors was also obtained to elucidate the origin of activity of 2-piperonyl 3,8-diaminoimidazo[1,2-a]pyrazines.
Multi-substituted 8-aminoimidazo[1,2-a]pyrazines by Groebke-Blackburn-Bienayme reaction and their Hsp90 inhibitory activity.,Ren J, Yang M, Liu H, Cao D, Chen D, Li J, Tang L, He J, Chen YL, Geng M, Xiong B, Shen J Org Biomol Chem. 2015 Feb 7;13(5):1531-5. doi: 10.1039/c4ob01865f. PMID:25490978[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Martinez-Ruiz A, Villanueva L, Gonzalez de Orduna C, Lopez-Ferrer D, Higueras MA, Tarin C, Rodriguez-Crespo I, Vazquez J, Lamas S. S-nitrosylation of Hsp90 promotes the inhibition of its ATPase and endothelial nitric oxide synthase regulatory activities. Proc Natl Acad Sci U S A. 2005 Jun 14;102(24):8525-30. Epub 2005 Jun 3. PMID:15937123 doi:10.1073/pnas.0407294102
- ↑ Forsythe HL, Jarvis JL, Turner JW, Elmore LW, Holt SE. Stable association of hsp90 and p23, but Not hsp70, with active human telomerase. J Biol Chem. 2001 May 11;276(19):15571-4. Epub 2001 Mar 23. PMID:11274138 doi:10.1074/jbc.C100055200
- ↑ Ren J, Yang M, Liu H, Cao D, Chen D, Li J, Tang L, He J, Chen YL, Geng M, Xiong B, Shen J. Multi-substituted 8-aminoimidazo[1,2-a]pyrazines by Groebke-Blackburn-Bienayme reaction and their Hsp90 inhibitory activity. Org Biomol Chem. 2015 Feb 7;13(5):1531-5. doi: 10.1039/c4ob01865f. PMID:25490978 doi:http://dx.doi.org/10.1039/c4ob01865f
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