Beta-Lactamase DataBase (BLDB): Structure and Function
Beta-Lactamase DataBase
Beta-Lactamase DataBase - Structure and Function Home Enzymes Structures Mutants Kinetics BLAST
Beta-Lactamase DataBase

Sequence alignment for the CfiA beta-lactamase family

CfiA-1
........10........20........30........40........50........60........70........80........90.......100.......110.......120.......130.......140.......150.......160.......170.......180.......190.......200.......210.......220.......230.......240.........
MKTVFILISMLFPVAVMAQKSVKISDDISITQLSDKVYTYVSLAEIEGWGMVPSNGMIVINNHQAALLDTPINDAQTEMLVNWVTDSLHAKVTTFIPNHWHGDCIGGLGYLQRKGVQSYANQMTIDLAKEKGLPVPEHGFTDSLTVSLDGMPLQCYYLGGGHATDNIVVWLPTENILFGGCMLKDNQATSIGNISDADVTAWPKTLDKVKAKFPSARYVVPGHGDYGGTELIEHTKQIVNQYIESTSKP
CfiA-2..............................................................................T.....A...........................K........................................................................................................................................ 98.80 %
CfiA-4..............................................................................T.................................K..........................................................................T....................................N........................ 98.39 %
CfiA-8..............................................................................T.....A...........................K.....................................................................................................................................L.. 98.39 %
CfiA-9..............................................................Y...............T.....A...........................K........................................................................................................................................ 98.39 %
CfiA-10..............................................................................T.....A...........................K.........................................................................................................................P.............. 98.39 %
CfiA-14..............................................................................T.................................K........................................................................................................................................ 99.20 %
CfiA-17........................................................I......R..............T.................................K.............F.......I.................................................................................................................. 97.59 %
CfiA-18.........................N....................................................T.....A...........................K........................................................................................................................................ 98.39 %
CfiA-19................................................................................................................K...R.................................................................................................................................... 99.20 %
CfiA-20..............................................................................T.................................K...R......................................................................T....................................N........................ 97.99 %
CfiA-21........................................................I......R..............T.....A...........................K.....................................T....................................T............................................................. 97.19 %
CfiA-22................................................................................................................K...R......................................................................T....................................N........................ 98.39 %
CfiA-23................................................................................................................K...............................................................................................................N........................ 99.20 %
CfiA-24........................................................I......R..............T.................................K..........................................................................T............................................................. 97.99 %
CfiA-26..............................................................................T......................S..........K........................................................................................................................................ 98.80 %
CfiA-27...........................................................................................................................................................................................T....................................N........................ 99.20 %
CfiA-28................................................................................................................................................................................................................................N........................ 99.60 %
CfiA-29..............................................................................T.................................K..........................................................................T............................................................. 98.80 %
CfiA-30................................................................................................................K........................................................................................................................................ 99.60 %
CfiA-31..............................................................................T.......................................................................................................................................................................... 99.60 %
CfiA-T1..............................................................................I.......................................................................................................................................................................... 99.60 %
B1-CfiA phylogenetic tree

Last updated: April 06, 2026.

If you use BLDB please cite: Naas, T.; Oueslati, S.; Bonnin, R. A.; Dabos, M. L.; Zavala, A.; Dortet, L.; Retailleau, P.; Iorga, B. I., Beta-Lactamase DataBase (BLDB) – Structure and Function. J. Enzyme Inhib. Med. Chem. 2017, 32, 917-919.

The development of the BLDB database was funded in part by the JPIAMR transnational project DesInMBL, the Région Ile-de-France (DIM Malinf) and the Laboratory of Excellence in Research on Medication and Innovative Therapeutics (LERMIT).

Contact: contact@bldb.eu

Live statistics (since March 29th, 2025)