- produ cing ▁stra ins ▁in ▁ 2 0 1 4 ▁and ▁ 2 0 1 8 . ▁The ▁first ▁cell ul ose - produ cing ▁stra in ▁had ▁a ▁gen ome ▁consisting ▁of ▁one ▁chrom os ome ▁ 3 . 4 ▁meg abase ▁pairs ▁and ▁five ▁pl asm ids , ▁of ▁which ▁one ▁is ▁a ▁" m eg ap las mid " ▁of ▁about ▁ 3 3 0 ▁kil ob ase ▁pairs . ▁ ▁Key ▁gen es ▁related ▁to ▁cell ul ose ▁production ▁occur ▁in ▁the ▁four - g ene ▁oper on ▁b cs AB CD , ▁which ▁codes ▁for ▁the ▁four ▁sub un its ▁of ▁the ▁cell ul ose ▁synth ase ▁en zym e . ▁All ▁four ▁gen es ▁are ▁required ▁for ▁efficient ▁cell ul ose ▁production ▁in ▁v ivo , ▁although ▁B cs A ▁and ▁B sc B ▁are ▁sufficient ▁in ▁vit ro . ▁Several ▁other ▁gen es ▁in ▁the ▁K . ▁x y lin us ▁gen ome ▁are ▁also ▁involved ▁in ▁cell ul ose ▁production ▁and ▁reg ulation , ▁including ▁a ▁cell ul ase ▁en zym e . ▁ ▁Us es ▁and ▁significance ▁K . ▁x y lin us ▁was ▁used ▁for ▁a ▁long ▁time ▁as ▁a ▁model ▁organ ism ▁for ▁the ▁study ▁of ▁cell ul ose ▁production ▁in ▁plants . ▁It ▁is ▁also ▁studied ▁in ▁its ▁own ▁right ▁to ▁explore ▁b acter ial ▁bio film ▁production , ▁cell - cell ▁communication , ▁and ▁other ▁topics ▁of ▁interest . ▁Production ▁of ▁b acter ial ▁cell ul ose ▁for ▁industrial