Beta-Lactamase DataBase (BLDB): Structure and Function
Beta-Lactamase DataBase
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Beta-Lactamase DataBase

Sequence alignment for the DHA-1-like beta-lactamase family

DHA-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.........
MKKSLSATLISALLAFSAPGFSAADNVAAVVDSTIKPLMAQQDIPGMAVAVSVKGKPYYFNYGFADIQAKQPVTENTLFELGSVSKTFTGVLGAVSVAKKEMALNDPAAKYQPELALPQWKGITLLDLATYTAGGLPLQVPDAVKSRADLLNFYQQWQPSRKPGDMRLYANSSIGLFGALTANAAGMPYEQLLTARILAPLGLSHTFITVPESAQSQYAYGYKNKKPVRVSPGQLDAESYGVKSASKDMLRWAEMNMEPSRAGNADLEMAMYLAQTRYYKTAAINQGLGWEMYDWPQQKDMIINGVTNEVALQPHPVTDNQVQPYNRASWVHKTGATTGFGAYVAFIPEKQVAIVILANKNYPNTERVKAAQAILSALE
DHA-2..................................................................V...................................M.....E.......................T............N..E..H................................................................................................................................................................................................................................... 98.15 %
DHA-3...................................................................................................................................................................................................................D............................................I.......................................................................................................................... 99.47 %
DHA-4..................................................................V........................................................................................................................................................................................................................................................................................................................ 99.74 %
DHA-5.......................................................R..........V....................................................................................H................................................................................................................................................................................................................................... 99.21 %
DHA-6....................................................................................................................................................................................................................................................T...................................................................................................................................... 99.74 %
DHA-7...................................................................................................................................................................................................................................................................................................................................................S....................................... 99.74 %
DHA-9.T..V...................................................................................................................................................................................................................H.................................................................................................................................................................. 99.21 %
DHA-10..................................................................V...................................T.....E.................................E........H................................................................................................................................................................................................................................... 98.68 %
DHA-12..................................................................VE..................................S........R...TQ..................................H........W.................................T...S.......................................................................................................V............................................................................ 97.10 %
DHA-13..................................................................V.............................................................................................W.......................................................................................................................................................................................................................... 99.47 %
DHA-14.......................................................................................................................................................H................................................................................................................................................................................................................................... 99.74 %
DHA-15....................................................................................................................................................................Y...................................................................................................................................................................................................................... 99.74 %
DHA-16.........V........................................................V..................................TS.....V......TQ........................E....SE...H........WQ..K.................T.........................................NQ....TG.P....................I..S......................................................................................................................... 94.20 %
DHA-17............................V.............................................................................................................................................................................................................................................................................................................................................................. 99.74 %
DHA-18..................................................................V..................................T..........................................................W....................................................V..R.................................................................................................................................................................. 98.68 %
DHA-19..................................................................V.............................................................................................W.......................................................................E.................................................................................................................................................. 99.21 %
DHA-20..................................................................V...................................T.....E.............................................................................................................................................................................................................................................................................. 99.21 %
DHA-21..................................................................V...................................T.....E..........................................H................................................................................................................................................................................................................................... 98.94 %
DHA-22.................................A........................................................................L................................................................................................................................................................................................................................................................................ 99.47 %
DHA-23....................................................................................................................................................................................................................................................S...................................................................................................................................... 99.74 %
DHA-24................................................................................................................................................................................................................................................................................................................................................A.......................................... 99.74 %
DHA-25....................................................................................................................................................................................................................................................D...................................................................................................................................... 99.74 %
DHA-26........................................................................................................................................................................................................................H.................................................................................................................................................................. 99.74 %
DHA-27................................................................................................................................................................W.......................................................................................................................................................................................................................... 99.74 %
DHA-28.T................................................................V...................................T..........................................N..............WQ...................................................................................................T...................V................................................................................................. 97.89 %
DHA-29..........................................................................................................................................L............................................................................................L................................................................................................................................................... 99.47 %
DHA-30.T.......V..........L.............................................V..................................TS.....V......TQ........................E....SE...H........WQ..K.................T.........................................NQ....TG.P....................I..S......................................................................................................................... 93.67 %
DHA-31.T..V.............................................................V..................................T..........................................................W....................................................V..R.............................................................................S.................................................................................... 97.89 %
DHA-33.............................................................................................................................................................................................................................................K............................................................................................................................................. 99.74 %
DHA-34..........................................................................................................................................................................................................................................I................................................................................................................................................ 99.74 %
MOR-2.T..V.............................................................V...................................T.....E.............................................................................................................................................................................................................................................................................. 98.68 %
C-DHA-1-like 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)