Cterminaaliin

Cterminaaliin is the illative form of the Finnish term C-terminaali, used in scientific Finnish to indicate movement toward the C-terminus in a sequence, localization, or modification context. The C-terminus, or carboxyl terminus, is the end of a protein or peptide chain that bears the free carboxyl group and is opposite the N-terminus, which bears the amino group. In descriptions of protein sequences, researchers often refer to the direction from the N-terminus to the C-terminus, making the C-terminus the terminating end of the chain.

In Finnish texts, C-terminaaliin appears when describing actions or locations toward that end, such as modifications or tagging directed to the C-terminus or proteolytic processing that affects residues at the C-terminus. The term is used across molecular biology, biochemistry, and bioinformatics to situate discussions about proteins, peptides, or their synthetic counterparts relative to the C-terminus.

Applications and usage include describing C-terminal tagging or fusion, C-terminal processing events, and localization signals that influence the terminal region of a protein. The concept is part of standard protein chemistry and sequence annotation, where precise reference to the C-terminus helps communicate experimental design and results.

See also N-terminus, C-terminus, terminus. Etymologically, the form illustrates how Finnish uses the illative case to express direction toward a terminal feature that is borrowed from English and Latin terminology.