Question

Which database stores 3D structures of biomolecules?

• A. GenBank
• B. UniProt
• C. PDB
• D. KEGG

Hint:

Important databases: \[ \boxed{ \begin{aligned} \text{PDB} &\rightarrow \text{3D structures} \text{GenBank} &\rightarrow \text{DNA/RNA sequences} \text{UniProt} &\rightarrow \text{Protein information} \text{KEGG} &\rightarrow \text{Pathways} \end{aligned} } \]

Answer 1

The Correct Option is C

Step 1: Recall the purpose of major biological databases. Different databases store different types of biological information. \[ \begin{aligned} \text{GenBank} &\rightarrow \text{Nucleotide sequences} \text{UniProt} &\rightarrow \text{Protein sequences and annotation} \text{PDB} &\rightarrow \text{Three-dimensional structures of biomolecules} \text{KEGG} &\rightarrow \text{Metabolic pathways} \end{aligned} \]

Step 2: Identify the correct database. The Protein Data Bank (PDB) stores experimentally determined 3D structures of proteins, nucleic acids and other biomolecules. Hence, \[ \boxed{\text{PDB}} \] is the correct answer. Therefore, \[ \boxed{(C)} \] is the correct answer.