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Sequence Search
Peptide Match: Find an exact match for a peptide sequence (3 to 30 amino acid long). Two UniProt databases can be used to perform the search: (1) UniProtKB, which contains functional information on proteins, with accurate, consistent, and rich annotation; or (2) UniRef100, which combines identical sequences and sub-fragments, from any organism, into a single entry.
Others
ID Mapping: Use ID Mapping to see the correspondence between any two identifiers, and therefore facilitate the navigation among databases and analysis programs.

Molecular Weight and Composition: Retrieve the molecular weight of a protein based on its amino acid composition. The calculation notes for the molecular weight of the protein and for each individual amino acid are provided.
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