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Hi.
Such topics are graphic in nature, so an illustration or two are highly
recommended here and even necessary, for the benefit of depiction and
clarification.
If not being too busy in this period of time, I'd have added it myself. BentzyCo 10:17, 19 August 2007 (UTC)[reply]
According to the article, "[A protomer] is the smallest unit composed of at least two different protein chains that form a larger heterooligomer by association of two or more copies of this unit." Should not a heterooligomer consist of two or more different protomers, rather than two or more copies of the same protomer? For example, "The D1–D2 dopamine receptor heteromer is a receptor heteromer consisting of D1 and D2 protomers." — Preceding unsigned comment added by Themckinlay (talk • contribs) 22:04, 10 July 2016 (UTC)[reply]
I also think this is confusing. The spike protein of coronaviruses is a homo-trimeric molecule consisting of three identical protomers (doi:10.1126/science.abb2507, fig. 2; doi:10.1016/j.cell.2020.02.058). The article states that the Na/K-ATPase enzyme is an (αβ)2-diprotomer, which would also make it a hetero-oligomer, because it consists of different sub-units α and β. (Besides, the cited source for this actually calls it an α2β2-diprotomer.) This should be the solution to the homo–hetero paradoxon here.