Binds the lower part of the 30S subunit head. Binds mRNA in the 70S ribosome, positioning it for translation (By similarity). RS3_THEEB 238 rpsC rps3 MGQKIHPIGFRLGITQDHRSRWYADSDRYPELLQEDHRIRTFINQQLANAGIAEVRIERKADQVELQIRTARPGVVVGKGGQGIEELRKQLRQMLPANRTIKVNVVEVNRVDAEASLLAEYITQQLERRVAFRRAVRQAIQRAQRAGIEGIKVQVAGRLNGAEIARTEWTREGRVPLHTLRADIDYAYRTARTIYGILGVKVWIFKGEVLPGQTEAVPREATRRSPQRRLPQFENRSN tlr0087 30S ribosomal protein S3