The globin fold is a common three-dimensional fold in proteins. This fold typically consists of eight alpha helices, although some proteins have additional helix extensions at their termini. The globin fold is found in its namesake proteins hemoglobin and myoglobin as well as in phycocyanin proteins. Because myoglobin was the first protein whose structure was solved, the globin fold was thus the first protein fold discovered. Since the globin fold contains only helices, it is classified as an all-alpha protein fold.
Read more about Globin Fold: Helix Packing, Sequence Conservation
Famous quotes containing the word fold:
“we do not explain my husband’s insane abuse
and we do not say why your wild-haired wife has fled
or that my father opened like a walnut and then was dead.
Your palms fold over me like knees. Love is the only use.”
—Anne Sexton (1928–1974)