Hello,

Can anyone suggest a simple R package to perform GO term analysis. Specially I am looking for a package that can produces publication quality figures and heatmaps regarding GO term results.

Thanks in advance
Check bioc package "clusterprofiler". 
https://guangchuangyu.github.io/2016/01/go-analysis-using-clusterprofiler/

For heatmaps of GO enrichment, check "revigo". They provide the output as R script which you can load in R and manipulate colors etc. to suit your need. 

