The UCSC Table Browser is a good source of genomic annotations of many different kinds. It has a clear, easily navigated user interface. It is a good complement to igvR.
The H3K4Me3 post-translational modification is frequently found in active promoters near transcription start sites. Here we obtain H3K4Me3 methylation marks in K562 cells in and around GATA2.
These are the steps involved:
All these steps are shown below.
library(igvR) igv <- igvR() setBrowserWindowTitle(igv, "H3K4Me3 GATA2") setGenome(igv, "hg38") showGenomicRegion(igv, "GATA2") zoomOut(igv) zoomOut(igv)
$chrom  "chr3" $start  128454762 $end  128517865 $width  63104 $string  "chr3:128,454,762-128,517,865"