3CNG_A         5 FCSQCGGEVI--LRIPEGDTLPRYIC--PKCHTIHYQ 37  Nitrosomonas europaea ATCC 19718
WP_013902490  11 FCPACATPLRwiAQLEDGGEKQRLRC--PACGWTHwn 45  Ramlibacter tataouinensis
Q67MT2         7 FCAACGGRLE--LRFVAEEGKERLVC--RACGRITYl 39  Symbiobacterium thermophilum
WP_014397911   9 FCPACGERVV--PRI--EENRTRLACpaASCGHVLYg 41  Corallococcus coralloides
BAF60852       7 YCPKCGGRLE--YRRR--GERERLTC--TACGYVFYE 37 
WP_012805744  15 FCPACGAPLE--LQRLRPDEPPRLVC--SKCSGVVYl 47  Desulfomicrobium baculatum
Q1B034         8 FCPRCGGGLE--RRVLKPAEPERLVC--GGCGFVFYl 40  Rubrobacter xylanophilus DSM 9941
AEB08829      15 FCPQCGGRLE--KKIVHPKEPPRLVC--GDCGFVFYl 47 
XP_004234808  88 FCQFCGGPNK--HEIPDGEEKVRAIC--THCGKITYE 120
XP_002290942   1 FCEKCGTKTK--LLIPKGDERERHVCgdPACGFVSYQ 35