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Lia G, et al.  (2006) Direct observation of DNA distortion by the RSC complex. Mol Cell 21(3):417-25

Abstract: The Snf2 family represents a functionally diverse class of ATPase sharing the ability to modify DNA structure. Here, we use a magnetic trap and an atomic force microscope to monitor the activity of a member of this class: the RSC complex. This enzyme caused transient shortenings in DNA length involving translocation of typically 400 bp within 2 s, resulting in the formation of a loop whose size depended on both the force applied to the DNA and the ATP concentration. The majority of loops then decrease in size within a time similar to that with which they are formed, suggesting that the motor has the ability to reverse its direction. Loop formation was also associated with the generation of negative DNA supercoils. These observations support the idea that the ATPase motors of the Snf2 family of proteins act as DNA translocases specialized to generate transient distortions in DNA structure.

Status: Published Type: Journal Article | Research Support, Non-U.S. Gov't PubMed ID: 16455496

Topics addressed in this paper

Number of different genes curated to this paper: 18

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Topics Genes linked to topics (#1 - 10 )
ARP7 ARP9 HTL1 LDB7 NPL6 RSC1 RSC2 RSC3 RSC30 RSC4
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Topics Genes linked to topics (#11 - 18 )
RSC58 RSC6 RSC8 RSC9 RTT102 SFH1 STH1 TAF14
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