>cd01909 betaLS_CarA_N Glutamine amidotransferases class-II (GATase) asparagine synthase_betaLS-type. Carbapenam synthetase (CarA) is an ATP/Mg2+-dependent enzyme that catalyzes the formation of the beta-lactam ring in (5R)-carbapenem-3-carboxylic acid biosynthesis. CarA is homologous to beta-lactam synthetase (beta-LS), which is involved in the biosynthesis of clavulanic acid, a clinically important beta-lactamase inhibitor. CarA and beta-LS each have two distinct domains, an N-terminal Ntn hydrolase domain and a C-terminal synthetase domain, a domain architecture similar to that of the class-B asparagine synthetases (AS-B's). The N-terminal domain of these enzymes hydrolyzes glutamine to glutamate and ammonia. CarA forms a homotetramer while betaLS forms a heterodimer. The N-terminal folds of CarA and beta-LS are similar to those of other class II glutamine amidotransferases including lucosamine-fructose 6-phosphate synthase (GLMS or GFAT), glutamine phosphoribosylpyrophosphate (

Probab=99.86 E-value=2.2e-20 Score=165.01 Aligned_cols=147 Identities=18% Similarity=0.158 Sum_probs=117.0 Q ss_pred CEEEEEEECCCCCCCCCCCCCCEEEECCCCEEEEEEEEEECCHHHHHHHHHHCCCCCCCCCCHHHHHHHHHHHCCCCCCH Q ss_conf 67898751222689860027867874699719999965508789999999864982423430789889898730256705 Q gi|254780336|r 80 NMAIGHVRYSTTGDQIIRNVQPLFADLQVGGIAIAHNGNFTNGLTLRKKLISSGAIFQSTSDTEVILHLIARSQKNGSCD 159 (488) Q Consensus 80 ~~~IGHvRYsT~G~~~~~n~QPf~~~~~~g~iaiaHNGnI~N~~eLr~~L~~~g~~f~s~sDTEvI~~Li~~~~~~~~~e 159 (488) T Consensus 26 ~~aL~h~rLsIidl~~~-~~qp~~----~~~~tlv~nGEIYNy~eLR~eL~~~g~~f~t~sDtEVlL~~~~~-------- 92 (199) T cd01909 26 GEALPNGAGTIVHAGSV-DVQVAR----SETGTAYLIGELYNRDELRSLLGAGEGRSAVLGDAELLLLLLTR-------- 92 (199) T ss_pred CEEECCCCEEEEECCCC-CCCCEE----CCCEEEEEEEEECCHHHHHHHHHHCCCEEECCCCHHHHHHHHHH-------- T ss_conf 50602351899866875-668616----37689999577417999999998669575458726999999999-------- Q ss_pred HHHHHHHHHHCCEEEEEEEC-CEEEEEEECCCCCEEEEEECCCEEEEEECCHHCCCC-----------------CCCEEE Q ss_conf 68999986530439999639-979999825665415998269569998612001047-----------------874123 Q gi|254780336|r 160 RFIDSLRHVQGAYAMLALTR-TKLIATRDPIGIRPLIMGELHGKPIFCSETCALEIT-----------------GAKYIR 221 (488) Q Consensus 160 ~i~~~l~~l~Gayslv~l~~-~~l~~~RDp~GiRPL~~G~~~~~~v~ASEs~Al~~i-----------------g~~~ir 221 (488) T Consensus 93 wG~~~l~rl~GmFAFai~D~~~~L~LaRDr~G~KPLY~~-~~g~~~~asElK~l~a~~G~~~~~~~~~~~~~~~~~~~v~ 171 (199) T cd01909 93 LGLHAFRLAEGDFCFFIEDGNGRLTLATDHAGSVPVYLV-QAGEVWATTELKLLAAHEGPKAFPFKSAGADTVSGLTGVQ 171 (199) T ss_pred HHHHHHHHHCCCEEEEEECCCCCEEEEECCCCCCCEEEE-ECCCEEEECCCHHHHCCCCCCCCCCCCCCCCCCCCCCCCE T ss_conf 829999872667899998599969999768998435898-4897998600012320779986567667875368877847 Q ss_pred ECCCCEEEEEEECCCCEEE Q ss_conf 3178707999408984799 Q gi|254780336|r 222 DVENGETIVCELQEDGFIS 240 (488) Q Consensus 222 dv~PGEiivi~~~~~g~~~ 240 (488) T Consensus 172 r~~pGt~~~l~~~~~~~~~ 190 (199) T cd01909 172 RVPPGTVNVLTFDGGSYGT 190 (199) T ss_pred ECCCCCEEEEEECCCCCEE T ss_conf 7189707999733787148

HHsearch alignment for GI: 254780336 and conserved domain: cd01909