Title : Molecular dissection of GTP exchange and hydrolysis within the ternary complex of tubulin heterodimers and Op18/stathmin family members.

Pub. Date : 2003 May 9

PMID : 12606544






8 Functional Relationships(s)
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1 Molecular dissection of GTP exchange and hydrolysis within the ternary complex of tubulin heterodimers and Op18/stathmin family members. Guanosine Triphosphate stathmin 1 Homo sapiens
2 Molecular dissection of GTP exchange and hydrolysis within the ternary complex of tubulin heterodimers and Op18/stathmin family members. Guanosine Triphosphate stathmin 1 Homo sapiens
3 Here we have analyzed GTP exchange and GTP hydrolysis at the exchangeable GTP-binding site (E-site) of tubulin heterodimers in complex with Op18, RB3, or SCG10. Guanosine Triphosphate stathmin 1 Homo sapiens
4 Here we have analyzed GTP exchange and GTP hydrolysis at the exchangeable GTP-binding site (E-site) of tubulin heterodimers in complex with Op18, RB3, or SCG10. Guanosine Triphosphate stathmin 1 Homo sapiens
5 Here we have analyzed GTP exchange and GTP hydrolysis at the exchangeable GTP-binding site (E-site) of tubulin heterodimers in complex with Op18, RB3, or SCG10. Guanosine Triphosphate stathmin 1 Homo sapiens
6 Results from mutational analysis of clusters of hydrophobic residues within the first helical repeat of Op18 suggest that GTP is hydrolyzed at the E-site that is interfaced between the head-to-tail arranged heterodimers, which is consistent with predicted GTPase productive interactions between the two tubulin heterodimers. Guanosine Triphosphate stathmin 1 Homo sapiens
7 We conclude that tubulin heterodimers in complex with Op18/stathmin family members are subject to allosteric effects that prevent futile cycles of GTP hydrolysis. Guanosine Triphosphate stathmin 1 Homo sapiens
8 We conclude that tubulin heterodimers in complex with Op18/stathmin family members are subject to allosteric effects that prevent futile cycles of GTP hydrolysis. Guanosine Triphosphate stathmin 1 Homo sapiens