Dear research community,
I am confused with the formatting of cytochromes.
I will ask my question with cytochrome c, as an example.
What is the most common abbreviation, cytc, cyt c or Cyc c?
Is the "c" of cytochrome c, italic? Would that also apply to c-type cytochrome.
Is cytochrome c2 or cytochrome c2 correct? Is the 2 italic or not? What does the 2 stand for? Speaking of cytochrome c550, I know the 550 means absorption. However, I guess the 2 is not referring to absorption, is the formatting convention yet for both numbers the same?
When I did not cover all conventions one should know about cytochromes, feel free to explain them too.
Many thanks!
Formatting conventions for protein names unfortunately depend on species (capital and small letters, italics). However, I have never seen the cyt and the c as one word.
Hi.
As for numbering, c1 c2 and a a2 a3 refers to the order in which they discovered. In the initial paper by Keilin in 1925 he describes 3 cytochromes a, b, and c. Then he has shown that c cytochrome is actually is a mixture of c and c1, and cytochrome a consists of cyt a and cyt a3. Why not a2? because he has found another bacterial cytochrome before and named it cyt a2, and so on. Numbering became complete mess and I don't think there is anybody knowing all numbers :). So don't search much logic in it. As for formating I have seen many different versions but not "cytc". I prefer to use subscript and small letters. I think it depends on an author. Hope it will give you some clue about it.
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