During splicing of proteins which part is removed

Answer: Option D

1. Splicing of proteins refers to the process where specific sequences within a protein are removed and the remaining parts are joined together.

2. Inteins are the parts removed during protein splicing.
- They are internal protein sequences that excise themselves from a precursor protein.

3. Exteins are the remaining protein sequences.
- These sequences are joined together to form the functional protein after the removal of inteins.

4. Protein splicing is an autocatalytic process.
- It does not require external enzymes and occurs naturally in some organisms.

5. Option D is correct because inteins are removed during protein splicing, leaving exteins to form the final protein.