in om ad ura , ▁Act in oc or all ia ▁and ▁Sp ir ill os por a . ▁All ▁species ▁of ▁Th erm omon os por aceae ▁share ▁the ▁same ▁cell ▁wall ▁type ▁( type ▁III ; ▁mes o - d iam in op im el ic ▁acid ), ▁a ▁similar ▁men aqu in one ▁profile ▁in ▁which ▁M K - 9 ( H 6 ) is ▁pre domin ant , ▁and ▁fat ty ▁acid ▁profile ▁type ▁ 3 a . ▁The ▁presence ▁of ▁the ▁di agnostic ▁sugar ▁mad uro se ▁is ▁variable , ▁but ▁can ▁be ▁found ▁in ▁most ▁species ▁of ▁this ▁family . ▁The ▁polar ▁li pid ▁profiles ▁are ▁character ized ▁as ▁ph osph ol ip id ▁type ▁P I ▁for ▁most ▁species ▁of ▁Th erm omon os por a , ▁Act in om ad ura ▁and ▁Sp ir ill os por a . ▁The ▁members ▁of ▁Act in oc or all ia ▁are ▁character ized ▁by ▁ph osph ol ip id ▁type ▁P II . ▁ ▁The ▁G + C ▁content ▁of ▁the ▁DNA ▁lies ▁within ▁the ▁range ▁ 6 6 ± 7 2   m ol %. ▁The ▁pattern ▁of ▁ 1 6 S ▁r R NA ▁sign atures ▁consists ▁of ▁nucle ot ides ▁at ▁positions ▁ 4 4 0   :   4 9 7 ▁( C – G ), ▁ 5 0 1   :   5 4 4 ▁( C – G ), ▁ 5 0 2   :   5 4 3 ▁( G