PT  - JOURNAL ARTICLE
AU  - Joel Hrit
AU  - Cheng Li
AU  - Elizabeth Allene Martin
AU  - Mary Goll
AU  - Barbara Panning
TI  - OGT binds a conserved C-terminal domain of TET1 to regulate TET1 activity and function in development
AID  - 10.1101/125419
DP  - 2017 Jan 01
TA  - bioRxiv
PG  - 125419
4099  - http://biorxiv.org/content/early/2017/04/07/125419.short
4100  - http://biorxiv.org/content/early/2017/04/07/125419.full
AB  - Mammalian TET enzymes oxidize 5-methylcytosine to 5-hydroxymethylcytosine and higher oxidized derivatives. TETs are targets of the enzyme OGT, which post-translationally modifies intracellular proteins in response to cellular nutrient status. The biological implications of the OGT-TET interaction have not been thoroughly explored. Here, we show for the first time that modification of TET1 by OGT enhances its activity in vitro. We identify a previously uncharacterized domain of TET1 responsible for binding to OGT and report a point mutation that disrupts the OGT-TET1 interaction. Finally, we show that the interaction between TET1 and OGT is necessary for TET1 to rescue tet mutant zebrafish hematopoetic stem cell formation, suggesting that OGT promotes TET1’s function in development. Our results demonstrate regulation of TET activity by OGT in vitro and in vivo. These results link metabolism and epigenetic control, which may be relevant to the developmental and disease processes regulated by these two enzymes.