Question

Which of the following is a protein sequence data base?

• A. \( \text{DDBJ} \)
• B. \( \text{EMBL} \)
• C. \( \text{GenBank} \)
• D. \( \text{PIR} \)

Hint:

For protein structures, the primary database is the PDB (Protein Data Bank).

Answer 1

The Correct Option is D

Concept: Biological databases are categorized based on the type of data they store (Nucleotides, Proteins, Structures, etc.).
• Nucleotide databases store DNA and RNA sequences.
• Protein databases store amino acid sequences and related functional data.

Step 1: Identifying Nucleotide Databases.
DDBJ (DNA Data Bank of Japan), EMBL (European Molecular Biology Laboratory), and GenBank (NCBI) form the International Nucleotide Sequence Database Collaboration. These three primary databases store genetic DNA sequences.

Step 2: Identifying the Protein Database.
PIR (Protein Information Resource) was established specifically to maintain protein sequence data. It grew out of Margaret Dayhoff's original Atlas and later collaborated with others to form the UniProt database. Final Answer: PIR is the specific protein sequence database among the given options.