heptad
/ˈhɛptad
/noun technical
A group or set of seven.The zipper was positioned either immediately after the heads or following 15 heptads of native sequence....
- In fibrous proteins, the coiled coil structures can be many heptads long.
- The amino acids in the heptad repeats that constitute the predicted coiled-coil regions are underlined.
Origin
Mid 17th century: from Greek heptas, heptad-, from hepta 'seven'.