Proceedings of the National Academy of Sciences of the United States of America
The helix-turn-helix motif as an ultrafast independently folding domain: the pathway of folding of Engrailed homeodomain.

Segmentation polarity homeobox protein engrailed

Engrailed homeodomain helix-turn-helix motif

500uM engrailed fragment 16-59, 50mM d-acetate, 100 mM NaCl, pH 5.7, 93%H2O / 7% D2O

Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax

Brunger, Adams, Clore, Gros, Nilges and Read