User:Nathan Harris/Tus: Difference between revisions
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''' | =='''Confirmation changes induced on Ter sites'''== | ||
The ''Ter'' region in ''E.coli'' between bases T5 and A9 is significantly underwound upon binding with Tus. This region of DNA is altered from standard B form which is attributed to straddling of Ter by interdomain β strands (βF and βG) and the L4 connecting loop of Tus. Tus interacts with ''Ter'' in a previously undescribed manner with β strands of Tus inserting almost perpendicularly into the major groove to recognise Ter. Alteration of ''Ter'' is characterised by an extended major groove and a broadened minor groove generating an overall DNA bend of 20o. Overall, contacts in these regions account for increased stability of the altered DNA shape and allow recognition of the appropriate ''Ter'' site. | The ''Ter'' region in ''E.coli'' between bases T5 and A9 is significantly underwound upon binding with Tus. This region of DNA is altered from standard B form which is attributed to straddling of Ter by interdomain β strands (βF and βG) and the L4 connecting loop of Tus. Tus interacts with ''Ter'' in a previously undescribed manner with β strands of Tus inserting almost perpendicularly into the major groove to recognise Ter. Alteration of ''Ter'' is characterised by an extended major groove and a broadened minor groove generating an overall DNA bend of 20o. Overall, contacts in these regions account for increased stability of the altered DNA shape and allow recognition of the appropriate ''Ter'' site. | ||
Mechanism of action | Mechanism of action | ||