1.

Three scores, Pnum (i), Hnum (i,j), and Ssum, have been derived to assist with a determination of the reliability of a secondary structure prediction for a particular base i or a base pair i,j. Which of the following is not a correct regarding Hnum?(a) is the sum of Pnum(i) and Pnum(j) -1(b) is the sum of Pnum(i) and Pnum(j) + 1(c) is the total number of dots in the ith row and jth column(d) represents the total number of base pairs with the ith or jth base in the predicted structuresI had been asked this question in an interview.This interesting question is from MFOLD and the Use of Energy Plots topic in section RNA Structure Prediction of Bioinformatics

Answer»

The CORRECT choice is (B) is the sum of Pnum(i) and Pnum(j) + 1

The explanation: The Hnum for a double stranded REGION is the average Hnum value for the BASE pairs in that helix. The LOWER this number, the more well determined the double-stranded region.



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