Protein L1 is also a translational repressor protein, it controls the translation of the L11 operon by binding to its mRNA (By similarity). rplA 232 Smed_0975 RL1_SINMW MAKIAKRVQKSREGVDPAKLYGLTEAVTMIKERATAKFDETIEVAMNLGVDPRHADQMVRGVVNLPNGTGRSVRVAVFARGAKADEAKAAGADVVGAEELVEIVQGGKIDFDRCIATPDMMPLVGRLGKVLGPRGMMPNPKVGTVTMDVAGAVKASKGGAVEFRVEKAGIVHAGIGKASFDAKALEENIRAFADAVIKAKPTGAKGNYVKRVAVSSTMGPGLKIDPATISAA 50S ribosomal protein L1 Binds directly to 23S rRNA. The L1 stalk is quite mobile in the ribosome, and is involved in E site tRNA release (By similarity).