from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The protein structure characterized by folding of the peptide chain into an alpha helix, beta sheet, or random coil.
- n. The folded, helical structure of double-stranded DNA.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The general three-dimensional structure of a biopolymer such as DNA or a protein.
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