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In structural biology, a protein subunit is a polypeptide chain or single protein molecule that assembles (or "coassembles") with others to form a protein complex. Large assemblies of proteins such as viruses often use a small number of types of protein subunits as building blocks.
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protein subunit subunits example catalytic polypeptide chain complex proteins often may one regulatory multimeric molecule large assemblies small number numbers
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Protein subunit | is a | polypeptide chain or single protein molecule that assembles | 0.90 | text |
| viruses often use a small number of types of protein subunits as building blocks.A subunit is often named with a Greek or Roman letter | instance of | Large assemblies of proteins | 0.80 | text |
| and the numbers of this type of subunit in a protein is indicated by a subscript | instance of | Large assemblies of proteins | 0.80 | text |
| microtubules | instance of | Longer multimeric proteins | 0.80 | text |
| other cytoskeleton proteins may consist of very large numbers of subunits | instance of | Longer multimeric proteins | 0.80 | text |
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