[35S]GTPγS binding studies of amphiphilic drugs-activated Gi proteins: A caveat
摘要:
This paper documents a serious problem met during the testing of Gi protein-activating properties of a new series of synthetic compounds by measuring the induced binding of [(35)S]GTP gamma S to different subtypes of Gi protein. The problem arose from the strong affinity between [(35)S]GTP gamma S and the tested compounds, that are characterized by several (2-4) positive charges and high lipophilicity. Apparently, such affinity yields insoluble, labelled complexes that, also in the absence of Gi protein, are retained on the filters and give rise to false positive results. (c) 2009 Elsevier Ltd. All rights reserved.
[35S]GTPγS binding studies of amphiphilic drugs-activated Gi proteins: A caveat
摘要:
This paper documents a serious problem met during the testing of Gi protein-activating properties of a new series of synthetic compounds by measuring the induced binding of [(35)S]GTP gamma S to different subtypes of Gi protein. The problem arose from the strong affinity between [(35)S]GTP gamma S and the tested compounds, that are characterized by several (2-4) positive charges and high lipophilicity. Apparently, such affinity yields insoluble, labelled complexes that, also in the absence of Gi protein, are retained on the filters and give rise to false positive results. (c) 2009 Elsevier Ltd. All rights reserved.
[35S]GTPγS binding studies of amphiphilic drugs-activated Gi proteins: A caveat
作者:Dina Manetti、Lorenzo Di Cesare Mannelli、Silvia Dei、Luca Guandalini、Elisabetta Martini、Martina Banchelli、Carla Ghelardini
DOI:10.1016/j.bmcl.2009.02.097
日期:2009.4
This paper documents a serious problem met during the testing of Gi protein-activating properties of a new series of synthetic compounds by measuring the induced binding of [(35)S]GTP gamma S to different subtypes of Gi protein. The problem arose from the strong affinity between [(35)S]GTP gamma S and the tested compounds, that are characterized by several (2-4) positive charges and high lipophilicity. Apparently, such affinity yields insoluble, labelled complexes that, also in the absence of Gi protein, are retained on the filters and give rise to false positive results. (c) 2009 Elsevier Ltd. All rights reserved.