The coverage of known protein-sequence ... the primary and tertiary level, respectively. According to this view, classifications that take into account secondary structure should also be ...

Proteins have four levels of structure: primary (amino acid sequence), secondary (local folding patterns like alpha helices and beta sheets), tertiary (overall 3D shape), and quaternary (assembly of ...

Protein folding is a process by which a polypeptide chain folds to become a biologically active protein in its native 3D structure ... proteins lose their tertiary and secondary structures ...

Oil production is separated into three phases: primary, secondary and tertiary, which is also known as Enhanced Oil Recovery (EOR). Primary oil recovery is limited to hydrocarbons that naturally ...