= Protein family
{wiki=Protein_family}
A protein family refers to a group of proteins that share a common evolutionary origin, structure, and often similar functions. Proteins within a family are usually encoded by related genes and exhibit significant sequence similarity, which suggests that they have evolved from a common ancestor. Protein families can be classified based on: 1. **Sequence Similarity**: Proteins that have similar amino acid sequences are often grouped together. This can be assessed using algorithms that compare sequences.
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