Multiple choice Which of the following is/are example(s) of derived protein structure databases? CATH PDB SCOP Only 2 1 and 2 1 and 3 2 and 3 1, 2 and 3 Reveal answer Fill a bubble to check yourself C Correct answer Explanation Correct answer. Structural Classification of Proteins (SCOP) database and CATH Protein Structure Classification are examples of derived protein structure databases.