Take the 2-minute tour ×
Biology Stack Exchange is a question and answer site for biology researchers, academics, and students. It's 100% free, no registration required.

What are the criteria that the researchers use to choose whether a protein is an SR protein or and SR-like protein?

share|improve this question
add comment

1 Answer

up vote 0 down vote accepted

Im not 100% certain. If something is called an x-like protein, it usually means it is homologous and has some sequence and / or structural similarity to x. However, there may not be enough biochemical evidence to say definitively that it is in family x. I came across this paper where they are speaking about an SR-like protein. They said:

While budding yeast lack alternative splicing, they do have three SR-like proteins: Npl3, Gbp2, and Hrb1. However, these have been best characterized for their roles in mRNA export, leaving their potential roles in splicing largely unexplored.

So in this case the protein has a serine/arginine binding domain and an RNA binding domain (just like SR proteins) but most of the biochemistry points to them being involved RNA export, not splicing (splicing, of course is what SR proteins are known for). So, they get the name SR-like. It will vary though. There is not a unified protein naming system

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.