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 MIR beta-lactamase family

MIR-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.......250.......260.......270.......280.......290.......300.......310.......320.......330.......340.......350.......360.......370.......380.
MMTKSLSCALLLSVASSAFAAPMSEKQLAEVVERTVTPLMNAQAIPGMAVAVIYQGQPHYFTFGKADVAANKPVTPQTLFELGSISKTFTGVLGGDAIARGEIALGDPVAKYWPELTGKQWQGIRMLDLATYTAGGLPLQVPDEVTDTASLLRFYQNWQPQWKPGTTRLYANASIGLFGALAVKPSGMSYEQAMTTRVFKPLKLDHTWINVPKAEEAHFAWGYREGKAVHVSPGMLDAEAYGVKTNVKDMASWLIANMKPDSLQAPSLKQGIALAQSRYWRVGAMYQGLGWEMLNWPVDAKTVVGGSDNKVALAPLPVAEVNPPAPPVKASWVHKTGSTGGFGSYVAFIPEKQLGIVMLANKSYPNPARVEAAYRILDALQ
MIR-2................A........T................................................................................................................................................................................................Y..................................V........................................................................................................................H...... 98.69 %
MIR-3................A.........................................................................................................................................................................................................Y............................................H..................................................................................................................... 99.21 %
MIR-4................A......F..................................................................................................................................................................................................Y............................................H..................................................................................................................... 98.95 %
MIR-5..........................................................................................................................................................................................................................Y.................................................................................................................................................................. 99.74 %
MIR-6..............T.A........T..............................................................S.................................................................................................................................Y.................................................................................................................................................................. 98.69 %
MIR-7................A.........................................................................................................................................................................................................Y.................................................................................................................................................................. 99.48 %
MIR-9..........................................................................................................................S...............................................................................................Y..................................V............................................................................................................................... 99.21 %
MIR-10..........................................................................................................................................................................................................................Y..................................V............................................................................................................................... 99.48 %
MIR-11..............T...........................................................................................................................................................................................................Y.................................................................................................................................................................. 99.48 %
MIR-12..............T.......................................................................................V...................................................................................................................Y.................................................................................................................................................................. 99.21 %
MIR-13..............T...........................................................................................................................................................................................................Y.................N................V............................................................................................................................... 98.95 %
MIR-14........................................K..............................................................S.....T..............H..E...................N.................................................I....N.N........T....Y.....D......................Q.....VMV........DS..RK..................................E............AR.......L.N.................................................... 93.44 %
MIR-15................A......................I..................................................................................................................................................................................Y..................................V............................................................................................................................... 98.95 %
MIR-16................A.........................................................................................................................................................................................................Y..................................V............................................................................................................................... 99.21 %
MIR-17..............T.A.....................................................................................V...................................................................................................................Y..................................V............................................................................................................................... 98.69 %
MIR-18..........................................................................................................................................................................................................................Y............................................E..................................................................................................................... 99.48 %
MIR-19..........................................................................................................................................................................................................................Y.............................................................C.................................................................................................... 99.48 %
MIR-20..............T.A........T................................................................................................................................................................................................Y.................................................................................................................................................................. 98.95 %
MIR-21..............T...........................................................................................................................................................................................................Y..................................V............................................................................................................................... 99.21 %
MIR-22..............T.......................................................................................V...................................................................................................................Y..................................V............................................................................................................................... 98.95 %
MIR-23..........................................................................................................................................................................................................................Y..............................................S................................................................................................................... 99.48 %
MIR-24..............................................................................................................................................................................L...........................................Y.................................................................................................................................................................. 99.48 %
MIR-25................A.........................................................................................................................................................................................................Y......................................................V...................................................................................I....................... 98.95 %
MIR-27..............T......T....................................................................................................................................................................................................Y............................................E..................................................................................................................... 98.95 %
MIR-28............................................................................................................A.............................................................................................................Y.................................................................................................................................................................. 99.48 %
MIR-29......................................................................................................V..D................................................................................................................Y..................................V............................................................................................................................... 98.95 %
MIR-30..............T.A........T................................................................................................S...............................................................................................Y..................................V............................................................................................................................... 98.43 %
MIR-31................A..................................L............R.....................................V...................................................................................................................Y..................................V............................................................................................................................... 98.43 %
MIR-32...............................................................................................E......V........................................G..........................................................................Y..................................V............................................................................................................................... 98.69 %
MIR-33..............T...........................................................................................................................................................................................................Y..................................................K............................................................................................................... 99.21 %
MIR-34....................................................................T.....................................................S...............................................................................................Y..................................V.................................................A............................................................................. 98.69 %
MIR-35................A.........................................................................................................................................................................................................Y............................................E..................................................................................................................... 99.21 %
MIR-36................A........T................................................................................................................................................................................................Y..................................V.........................................................T..................................................................... 98.69 %
MIR-37................A.........................................................................................................................................................................................................Y............................................H..........................................N.......................................................................... 98.95 %
MIR-38..............T.A.....................................................................................V...................................................................................................................Y.............R.................................................................................................................................................... 98.69 %
MIR-39..........................................................................................................................S...............................................................................................Y..................................V.........................................L..................................................................................... 98.95 %
C-MIR 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)