| pubmed-article:8477844 | pubmed:abstractText | Fluoraluminates are thought to mimic the gamma-phosphate of GTP and thus, together with GDP, perturb the functioning of heterotrimeric GTP-binding G-proteins. Here we show they do inhibit the ribosome-stimulated GTPase activity of EF-G from Escherichia coli via the formation of a stable complex with EF-G-GDP and ribosomes. In contrast, no perturbed interactions were observed in a similar ribosomal complex with EF-Tu. Interestingly, in the absence of ribosomes both EF-Tu an EF-G remain totally unaffected by fluoraluminates. For members of the GTPase superfamily such differential effects have not been described before. | lld:pubmed |
