Inteinsـــــــــــــــــــــــــ .
A)are protein self-splicing sequences
B)are portions of mRNA that are spliced out of the primary transcript
C)are never translated
D)are protein sequences that are part of functional proteins

Question

Quizplus · Accepted Answer

Inteins are protein self-splicing sequences that can excise themselves from within a larger protein sequence through catalytic activity. The remaining portions of the protein, called exteins, can then be joined together to form a functional protein. Inteins are not portions of mRNA and can be translated when part of a larger protein sequence.