This entry represents a family of very small uncharacterised proteins of approximately 60 residues found exclusively in cyanobacteria. The family is widely distributed across the phylum, including members of the orders Nostocales, Oscillatoriales, Synechococcales, and Chroococcales. The function of this family remains to be determined.
","llm":false,"checked":false,"updated":false}],"wikipedia":[{"title":"Domain_of_unknown_function","extract":"A domain of unknown function (DUF) is a protein domain that has no characterised function. These families have been collected together in the Pfam database using the prefix DUF followed by a number, with examples being DUF2992 and DUF1220. As of 2019, there are almost 4,000 DUF families within the Pfam database representing over 22% of known families. Some DUFs are not named using the nomenclature due to popular usage but are nevertheless DUFs.
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