Extended Data Fig. 1: Environmental marine xanthophylls bind to HeimdallR1.
From: Structural insights into light harvesting by antenna-containing rhodopsins in marine Asgard archaea

HPLC profile of Mediterranean Sea chromophore extract (blue) and HeimdallR1 bound chromophores (red). Main peaks correspond to fucoxanthin (2), diatoxanthin (3), lutein (5), β-carotene (8), and uncharacterized (1,4,6,7,9). Chromophores were registered at 450 nm.