2.2 Protein Sequence Databases — Test 1

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2.2 Protein Sequence Databases — Test 1

Q1. UniProt is best described as the:✓ Universal Protein Resource — a comprehensive protein sequence and annotation database

Q2. Within UniProtKB, the Swiss-Prot section is characterised by being:✓ Manually reviewed and high-quality

Q3. The TrEMBL section of UniProtKB consists of entries that are:✓ Computationally annotated and not yet manually reviewed

Q4. UniProtKB (the UniProt Knowledgebase) is composed of:✓ Swiss-Prot (reviewed) plus TrEMBL (unreviewed)

Q5. UniParc (the UniProt Archive) functions as a:✓ Non-redundant archive of all protein sequences from many sources

Q6. UniRef databases (UniRef100, UniRef90, UniRef50) provide:✓ Clustered sets of sequences to reduce redundancy

Q7. UniMES was designed to hold:✓ Metagenomic and environmental sequence data

Q8. PIR, one of the earliest protein databases, stands for:✓ Protein Information Resource

Q9. Swiss-Prot entries are particularly valued because they have:✓ Low redundancy and high-quality functional annotation

Q10. A protein database entry's annotation typically includes its function, domains and:✓ Post-translational modifications

Q11. In UniProtKB, the distinction 'reviewed' vs 'unreviewed' corresponds to:✓ Swiss-Prot vs TrEMBL

Q12. UniParc is described as 'non-redundant' because it:✓ Stores each unique sequence only once, with a stable identifier

Q13. The main advantage of clustering sequences in UniRef is that it:✓ Speeds up similarity searches and reduces dataset size

Q14. A UniProt accession number serves to:✓ Uniquely and stably identify a protein entry

Q15. Protein databases provide cross-references mainly to:✓ Link entries to related data in other databases

Q16. Compared with Swiss-Prot, TrEMBL generally offers:✓ Broader coverage but lower annotation quality

Q17. The historical PIR database originated from the work of:✓ Margaret Dayhoff (the protein sequence atlas)

Q18. UniProt was created by uniting the resources of:✓ Swiss-Prot, TrEMBL and PIR

Q19. When high reliability of protein annotation is essential, a researcher should preferentially use:✓ Swiss-Prot (reviewed) entries

Q20. Match each UniProt component with its description and select the correct option.✓ A-iii, B-iv, C-i, D-ii