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protomer
This term is used exclusively within biochemistry and structural biology to describe the individual polypeptide chains that make up a protein complex. It is a highly technical term used to distinguish a single subunit from the overall oligomer, emphasizing the repetitive nature of the assembly when the subunits are identical.
In a laboratory or academic context, the term is often contrasted with "monomer" to specify that the unit is part of a larger, functional protein assembly rather than existing as a standalone molecule. It is almost never used outside of scientific literature or specialized medical discourse.
Meanings
Examples
The protein complex consists of four identical protomer units.
Each protomer folds into a specific three dimensional shape before assembly.
We need to determine if the protomer is a single polypeptide chain.
The interaction between each protomer stabilizes the entire quaternary structure.
The interaction between each protomer stabilizes the entire quaternary structure.
Does this specific protomer contain the active site for catalysis?
A mutation in a single protomer can disrupt the symmetry of the whole oligomer.
The researchers observed the protomer dissociating under high salt concentrations.
I wonder if the protomer undergoes a conformational change upon ligand binding.