Human DeoxyHb (C2 symmetry) obtained using the SPT Labtech chameleon In the presence of 60 mM sodium dithionite under Al's oil

Preparation of oxygen-sensitive proteins for high-resolution cryoEM structure determination using blot-free vitrification.

Samples were frozen with the SPT Labtech chameleon

VLSPADKTNVKAAWGKVGAHAGEYGAEALERMFLSFPTTKTYFPHFDLSHGSAQVKGHGKKVADALTNAVAHVDDMPNAL
SALSDLHAHKLRVDPVNFKLLSHCLLVTLAAHLPAEFTPAVHASLDKFLASVSTVLTSKY

VHLTPEEKSAVTALWGKVNVDEVGGEALGRLLVVYPWTQRFFESFGDLSTPDAVMGNPKVKAHGKKVLGAFSDGLAHLDN
LKGTFATLSELHCDKLHVDPENFRLLGNVLVCVLAHHFGKEFTPPVQAAYQKVVAGVANALAHKYH

National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

Hemoglobin, anaerobic, oxygen, heme, OXYGEN BINDING