>sp|Q8RAA8|SP2AB_CALS4 Anti-sigma F factor OS=Caldanaerobacter subterraneus subsp. tengcongensis GN=spoIIAB MEYNNMMELKFLSKSQNESFARTVVAAFAAQLDPTIEEIADIKTAVSEAVTNCIIHAYEN KIGIITIRAFILDNKITIEVIDEGKGIEDVEKAMQPLFTTRLEEERAGMGFTVMQTFMDE LEVESTPGKGTLVRMTKYIGRNR