Protein Domain : Ribosomal protein L9, N-terminal domain superfamily IPR036935

Type	Homologous_superfamily
Description	Ribosomal protein L9 is one of the proteins from the large ribosomal subunit. In Escherichia coli, L9 is known to bind directly to the 23S rRNA. It belongsto a family of ribosomal proteins grouped on the basis of sequence similarities [ ].The crystal structure of Bacillus stearothermophilus L9 shows the 149-residue protein comprises two globular domains connected by a rigid linker [ ]. Each domain contains an rRNA binding site, and the protein functions as astructural protein in the large subunit of the ribosome. The C-terminal domain consists of two loops, an α-helix and a three-stranded mixed parallel, anti-parallel β-sheet packed against the central α-helix. The long central α-helix is exposed to solvent in the middle and participates in thehydrophobic cores of the two domains at both ends.
Short Name	Ribosomal_L9_N_sf