Binary crystal structure of positively supercharged ferritin variant Ftn(pos) and native(K86Q) human heavy chain ferritin (Mg formate condition)

Assembly Requirements for the Construction of Large-Scale Binary Protein Structures.

PETRA III, EMBL c/o DESY BEAMLINE P14 (MX2)

Ferritin heavy chain, N-terminally processed

TSQVRQNYHQDSEKAINRQIRLELYASYVYLSMSYYFDRDDVALKNFAKYFLHQSHEEREHAEKLMKLQNQRGGRIFLQD
IQKPDKDDWESGLRAMEKALKLEKKVNQSLLELHKLATKKNDPHLCDFIETHYLNEQVKAIKELGDHVTNLRKMGAPRSG
LAEYLFDKHTLG

TSQVRQNYHQDSEAAINRQINLELYASYVYLSMSYYFDRDDVALKNFAKYFLHQSHEEREHAEKLMKLQNQRGGRIFLQD
IQKPDCDDWESGLNAMECALHLEKNVNQSLLELHKLATDKNDPHLCDFIETHYLNEQVKAIKELGDHVTNLRKMGAPESG
LAEYLFDKHTLG

reservoir: 0.19M Magnesium Formate
Ftn(pos): 4 mg/mL in 50mM Tris pH 7.5 1 M NaCl
Ftn(Wildtype): 4mg/mL in 50mM Tris pH 7.5 0.3 M NaCl
2 uL reservoir + 1uL Ftn(pos) + 1uL Ftn(Wildtype) added to coverslide in this order.

Ftn(pos) variant is also present in this binary crystal structure

Ftn(pos) forms the same nanocage as native human heavy chain ferritin

Hydrogens have been added in their riding positions

Oxidoreductase, protein design, charged protein container, binary protein structures, self-assembly, binary nanocage assembly

TSQVRQNYHQDSEAAINRQINLELYASYVYLSMSYYFDRDDVALKNFAKYFLHQSHEEREHAEKLMKLQNQRGGRIFLQD
IKKPDCDDWESGLNAMECALHLEKNVNQSLLELHKLATDKNDPHLCDFIETHYLNEQVKAIKELGDHVTNLRKMGAPESG
LAEYLFDKHTLG