This HEAT repeat is found most frequently in sister chromatid cohesion proteins such as Nipped-B. HEAT repeats are found tandemly repeated in many proteins, and they appear to serve as flexible scaffolding on which other components can assemble.

1: HEAT repeats associated with condensins, cohesins, and other complexes involved in chromosome-related functions. Neuwald AF, Hirano T; Genome Res. 2000;10:1445-1452. PMID:11042144