Described herein are compositions relating to engineered hnRNP-E1 variant polypeptides, nucleic acids encoding such polypeptides, engineered hnRNP-E1 compositions, and methods of use thereof. In some embodiments, the engineered hnRNP-E1 polypeptide contains a C293S substitution and retains the ability to bind to a poly(rC)- and poly(U)-rich 5′-UTR element in its cognate mRNA targets in the absence of homocysteine. In some cases, the engineered hnRNP-E1 compositions provided herein are useful to increase the translation of a subset of mRNAs or to treat certain health conditions as described herein.