Cluster C phages have a gene that has, in the past, usually been annotated as "RNA binding protein" or "RNA binding domain protein" - for example, Erdmann 201 or Shelob 201. Neither of those names is currently in the approved function list. The only one approaching that function is something called "Ro-like RNA binding protein." "Ro" is not an easy search term to use, so my failure to find any reference on PubMed to an RNA binding protein called "Ro" or "Ro-like" could be my fault, but it leaves me wondering: 1) What is a Ro-like RNA binding protein and how do I recognize it? and 2) Is every RNA binding protein now supposed to be annotated as a Ro-like RNA binding protein, given the absence of any other choices?