Introduction ^^^^^^^^^^^^ This directory contains GTF files for the main gene transcript sets where available. They are sourced from the following gene model tables: ncbiRefSeq, refGene, ensGene, knownGene Not all files are available for every assembly. For more information on the source tables see the respective data track description page in the assembly. For example: http://genome.ucsc.edu/cgi-bin/hgTrackUi?db=hg38&g=refGene Information on the different gene models can also be found in our genes FAQ: https://genome.ucsc.edu/FAQ/FAQgenes.html Generation ^^^^^^^^^^ The files are created using the genePredToGtf utility with the additional -utr flag. Utilities can be found in the following directory: http://hgdownload.soe.ucsc.edu/admin/exe/ An example command is as follows: genePredToGtf -utr hg38 ncbiRefSeq hg38.ncbiRefSeq.gtf Additional Resources ^^^^^^^^^^^^^^^^^^^^ Information on GTF format and how it is related to GFF format: https://genome.ucsc.edu/FAQ/FAQformat.html#format4 Information about the different gene models available in the Genome Browser: https://genome.ucsc.edu/FAQ/FAQgenes.html More information on how the files were generated: https://genome.ucsc.edu/FAQ/FAQdownloads.html#download37