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Questions and answers > DNA/RNA-protein interactions (SNAP)
What are the Tdst and Rdst meaning?
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shuxiang:
Hi Xiang-Jun,
I used snap to calculate the interactions between RNA and proteins and a partial output likes this:
id nt-aa nt aa Tdst Rdst Tx Ty Tz Rx Ry Rz
1 2ZJP A-lys X.A5 G.LYS162 7.87 62.37 -7.80 0.04 -1.04 53.25 26.79 19.25
Wilma and I are wondering that the meanings of Tdst and Rdst (We guess they are transnational distance and Rotational distance). But why these distances can be negative values?
Thank you. :)
Best,
Shuxiang
xiangjun:
Hi Shuxiang,
Tdst and Rdst mean translational and rotational distances, respectively. The negative values reflect the relative position (e.g., the C-alpha atom above or below a base plane).
Xiang-Jun
shuxiang:
Great. Thank you.
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Created and maintained by Dr. Xiang-Jun Lu [律祥俊] (xiangjun@x3dna.org)
The Bussemaker Laboratory at the Department of Biological Sciences, Columbia University.