Machine Learning Analysis of the Human Initiator Region Reveals Key Features of Different Types of Core Promoters

Here, we generated highly predictive machine learning models of the human Inr region, and determined that the Inr is present in about 60% of focused human promoters, identified a novel TATA-specific Inr, and detected the overlapping but functionally distinct TCT motif. Quantitative genome-wide analyses revealed a strict and synergistic interaction between the Inr and DPR, an inverse relationship between the TATA and DPR, a flexible and sometimes independent function of the TATA box in relation to the Inr, and different properties of the TCT motif in humans versus Drosophila.