TABLE 2.

Loss of acn and icd and retention of leuCD and leuB is widespread among nutritional insect endosymbionts^a

Obligate insect endosymbiont	Mb	GenBank accession no.	Presence of gene:
			acn	leuCD	icd	leuB
Baumannia cicadellinicola HC	0.69	NC_007984
Blattabacterium sp. BGE	0.64	NC_013454	+	+	+	+
Blattabacterium sp. BPLAN	0.64	NC_013418		+		+
Buchnera aphidicola APS	0.64	NC_002528		+		+
Buchnera aphidicola BP	0.62	NC_004545		+		+
Buchnera aphidicola CC	0.42	NC_008513		+		+
Buchnera aphidicola SG	0.64	NC_004061		+		+
“Candidatus Azobacteroides pseudotrichonymphae”	1.11	NC_011565		+		+
“Candidatus Blochmannia floridanus”	0.71	NC_005061		+		+
“Candidatus Blochmannia pennsylvanicus”	0.79	NC_007292		+		+
“Candidatus Carsonella ruddii PV”	0.16	NC_008512		+		+
“Candidatus Hodgkinia cicadicola DSEM”	0.14	NC_012960
“Candidatus Sulcia muelleri” GWSS	0.25	NC_010118		+		+
“Candidatus Sulcia muelleri” SMDSEM	0.28	NC_013123		+		+
Wigglesworthia glossinidia	0.70	NC_004344

^aEndosymbionts with completely sequenced genomes were queried with orthologous proteins from closely related organisms using the blastp program.