This Indigo alpha helix model consists of just backbone structure hence the low price of $24.95. It fits the major groove of the Indigo 12 base pair DNA double helix model. Although it can be squeezed into the minor groove, the stearic hindrance is obvious.
Buy 2 and compare the difference between alpha helix and beta pleated sheet protein structures.
|67288c||Bond, Minit, white, 210mm||1|
|68221C||Atom, Orbit, Cl, green, 1 prong||20|
|68227C||Atom, Orbit, O, 180 degree, red||20|
|68239C||Atom, Orbit, C, planar: 114-123-123, black||20|
|68237C||Atom, Orbit, N, planar: 108-126-126, blue||20|
|68244C||Atom, Orbit, C, tetrahedral, black||20|
|68186-20||Wobbly bond, 20mm, each||100|
|68186-50||Wobbly bond, 50mm, each||17|