Figure 7

Scoring thresholds. The TRII score distribution (blue curve) for the high-confidence set of translation initiation sites can be used as a reference curve for assessing translation start sites. Because 95% of the scores are higher than 3.7 bits, a score below this threshold can be considered nonconforming, and potentially weak or nonfunctional, with 95% confidence (red bar region). The score distribution (grey curve) for shows 95% of scores below 7.7 bits. Scores above this threshold can be considered likely translation start sites with 95% confidence (green bar region). Scores between 3.7 and 7.7 could be functional or nonfunctional. In all cases, scores were calculated using the reference set .