Isoform vs. Isotype — What's the Difference?

Any of the chemically distinct forms of a protein that perform the same biochemical function, although often at different rates.

A biological specimen or other element that is a duplicate of the holotype.

(biochemistry) Any of several different forms of the same protein, arising from either single nucleotide polymorphisms, differential splicing of mRNA, or post-translational modifications (e.g. sulfation, glycosylation, etc.)

Any of several classes or subclasses of immunoglobulins, such as immunoglobulins A and G, that are distinguished by differences in the amino acid sequence of the constant regions of their heavy chains. All isotypes are usually found in every individual of a species.

(immunology) A marker corresponding to an antigen found in all members of a subclass of a specific class of immunoglobulins

A duplicate specimen of the holotype, from the same genetic individual.