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Which of the following is untrue regarding UniGene?(a) It is an NCBI EST cluster database(b) Overlapping EST sequences are computationally processed to represent a single expressed gene(c) Each cluster is a set of overlapping EST sequences(d) The overlapping EST sequences are computationally processed to represent a set of expressed genesThe question was posed to me during an interview.I'm obligated to ask this question of Sequence topic in section Functional Genomics & Proteomics of Bioinformatics

Answer»

The correct choice is (d) The overlapping EST SEQUENCES are computationally PROCESSED to represent a set of expressed genes

The best I can explain: The database is constructed based on combined information from dbEST, GenBank mRNA database, and “electronically spliced” genomic DNA. Only ESTS with 3’poly-A ends are clustered to minimize the problem of chimerism. The RESULTING 3’EST sequences provide more unique representation of the transcripts.



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