Conserved gene clusters/operons in FNP.

aThe rplX gene is duplicated in this operon in the FNN genome.
bThe L34 operon is present in the C. difficile, B. anthracis and E. coli genomes.
cThe ABC1 family protein gene is missing.
dAn L8A gene maps between nusA and infB.
ND, not determined.

a. rplX基因在FNN基因组的该操纵子中发生了重复。
b. L34操纵子存在于艰难梭菌（C. difficile）、炭疽芽孢杆菌（B. anthracis）及大肠杆菌（E. coli）的基因组中。
c. ABC1家族蛋白编码基因发生缺失。
d. L8A基因定位于nusA基因与infB基因之间。
ND，未确定（not determined）。