passages.id: split_1_test_1253_passage
passages.type: progene_text
passages.text: Four genes encoding carboxysome shell peptides ( csoS1A , csoS1B , csoS1C , csoS2 ) , the genes encoding the large and small subunits of RuBisCO ( cbbL , cbbS ) , and three unidentified ORFs constitute an operon in Thiobacillus neapolitanus .