Npl3 associates strongly to telomeres in the absence of Rat1. C) The Rat1-AID tagged protein is strongly degraded following 1h of 1mM IAA treatment. Protein levels are determined using anti-FLAG (Rat1-AID) and anti-actin antibodies. Abbreviations: IAA: indole-3-acetic acid, AID: Auxin inducible degron. 