Thank you for your question about finding transcription factor binding motifs in the UCSC Genome Browser. We have several tracks for the human hg19 assembly that include transcription factor binding information:
- ENCODE Transcription Factor Binding: https://genome.ucsc.edu/cgi-bin/hgTrackUi?db=hg19&g=wgEncodeTfBindingSuper
- HMR Conserved Transcription Factor Binding Sites: https://genome.ucsc.edu/cgi-bin/hgTrackUi?db=hg19&g=tfbsConsSites
- Transcription Factor ChIP-seq (161 factors) from ENCODE with Factorbook Motifs: https://genome.ucsc.edu/cgi-bin/hgTrackUi?db=hg19&g=wgEncodeRegTfbsClusteredV3
You can also search our public mailing list archives to see other questions related to transcription factor binding motifs: https://groups.google.com/a/soe.ucsc.edu/forum/#!searchin/genome/transcription$20factor$20motif%7Csort:date.
If you have any follow-up questions, it would be helpful if you could post them to our Google Groups forum: https://groups.google.com/a/soe.ucsc.edu/forum/#!forum/genome, that way our whole team can see the question and help with an answer.
Matthew from the UCSC Genome Browser