GCA_000012465.1 PMN2A_1735 definition sigma 54 modulation protein / SSU ribosomal protein S30P GCA_000012465.1 PMN2A_1861 definition SSU ribosomal protein S1P GCA_000012465.1 PMN2A_1120 definition SSU ribosomal protein S17P GCA_000012465.1 PMN2A_1316 definition SSU ribosomal protein S6P