bioinformatics tool

A bioinformatics tool is software that reads and compares biological data—like DNA sequences or protein structures—using computers to uncover meaningful patterns.

Think of it like a librarian program that automatically checks how many times a particular sentence repeats across a mountain of books, or which books overlap in content, without anyone having to compare them by eye. Protein sequences are, in the end, just long strings written in an alphabet, so these tools can line up candidates and quickly sort out how different they are from each other and whether they're genuinely new forms.

When designing candidate proteins for a new drug, hundreds of plausible-looking candidates can come out of the process. If too many of them end up being too similar to each other, the odds of success drop. So bioinformatics tools are used to check the diversity and novelty of the candidate pool, narrowing it down—and then the one most likely to bind to the target is picked out and sent on to actual lab experiments.

The article states that "a bioinformatics tool was used to check the diversity and novelty of the candidate pool, then the design most likely to bind the target was selected." Here, "tool" doesn't refer to one specific product—it's a general term covering various software used to compare and analyze protein sequences or structures.