... forms of PABP as His6-tagged proteins. PABP1234 contains thefour RRM domains but not the large C-terminal domain,while PABP12 and PABP34 contain RRM domains 1 and 2, and RRM domains 3 and 4, ... forpoly(A) results from binding to domains 1 and 2, but thatthese domains do not contribute much to the binding of AU-rich RNA. In contrast, PABP34, containing justdomains 3 and 4, bound the AU4 ... binding protein:functional domains in RNA binding and protein–protein inter-action. J. Mol. Biol. 256, 20–30.20. Burd, C.G., Matunis, E.L. & Dreyfuss, G. (1991) The multipleRNA-binding...