>cd01744 GATase1_CPSase Small chain of the glutamine-dependent form of carbamoyl phosphate synthase, CPSase II. This group of sequences represents the small chain of the glutamine-dependent form of carbamoyl phosphate synthase, CPSase II. CPSase II catalyzes the production of carbomyl phosphate (CP) from bicarbonate, glutamine and two molecules of MgATP. The reaction is believed to proceed by a series of four biochemical reactions involving a minimum of three discrete highly reactive intermediates. The synthesis of CP is critical for the initiation of two separate biosynthetic pathways. In one CP is coupled to aspartate, its carbon and nitrogen nuclei ultimately incorporated into the aromatic moieties of pyrimidine nucleotides. In the second pathway CP is condensed with ornithine at the start of the urea cycle and is utilized for the detoxification of ammonia and biosynthesis of arginine. CPSases may be encoded by one or by several genes, depending on the species. The E.coli enzyme is

Probab=100.00 E-value=0 Score=422.11 Aligned_cols=178 Identities=54% Similarity=0.958 Sum_probs=170.7 Q ss_pred EEEEECCCCCHHHHHHHHHCCCCEEEECCCCHHHHHHCCCCEEEECCCCCCCCCCCCCCHHHHHHHCCCCCCEEEEECHH Q ss_conf 99996796410232222202454133046574464413578899858888841011211012221025786347861005 Q gi|254780420|r 208 VVCIDYGIRSNLLRVLSSLGCRITIVGAETSYKDIMSLQPDGVLLSNGPGDPAVTSVYSSPIICKLVDSGMPMFGICLGH 287 (396) Q Consensus 208 IvvIDfGiK~nIlr~L~~~g~~v~Vvp~~~~~~~i~~~~pdgi~lSnGPGdP~~~~~~~~~~~~~~~~~~iPilGIClGh 287 (396) T Consensus 1 i~ilDfGsqy~i~r~lrelg~~~~v~~~~~~~~~i~~~~p~giIlS~GPg~p~~~~~-~~~~~~~~~~~~iPILGIClG~ 79 (178) T cd01744 1 VVVIDFGVKHNILRELLKRGCEVTVVPYNTDAEEILKLDPDGIFLSNGPGDPALLDE-AIKTVRKLLGKKIPIFGICLGH 79 (178) T ss_pred CEEEECCCHHHHHHHHHHCCCEEEEEECCCCHHHHHHCCCCEEEECCCCCCHHHHCC-HHHHHHHHHHCCCCEEEECHHH T ss_conf 999988749999999998799799993989999998419997998999999577344-4999999974699889981217 Q ss_pred HHHHHHCCCCCCCCCCCCCCCCCCCEECCCCEEEEECCCCCEEEEHHHCCCCCEEEEEECCCCEEEEEEECCCCEEEECC Q ss_conf 88787528544667767521011234778970999614576157034369982899998899808726867997789834 Q gi|254780420|r 288 QLLGLALGAQTVKMYQGHHGVNHPVKNISNGTVEIVSMNHGFAIDASSLPAGLEETHISLFDSSNCGFRLIDQPVFSVQY 367 (396) Q Consensus 288 Q~l~~a~G~~~~kl~~GhrG~N~Pv~~~~t~kv~iTsqNHg~~v~~~slp~~~~v~~~~~nD~tiegi~~~~~~~~~vQf 367 (396) T Consensus 80 Q~ia~~~Gg~v~k~~~g~~G~n~pv~~~~~~~~~~~~~~H~~~v~~~~lp~~~~v~a~s~~d~~i~ai~h~~~~i~GVQF 159 (178) T cd01744 80 QLLALALGAKTYKMKFGHRGSNHPVKDLITGRVYITSQNHGYAVDPDSLPGGLEVTHVNLNDGTVEGIRHKDLPVFSVQF 159 (178) T ss_pred HHHHHHCCCCCCCCCCCCCCCCCCCEECCCCCEEEEECCCCEEEEECCCCCCCEEEEECCCCCCEEEEEECCCCEEEEEE T ss_conf 88998819830015667247871216768883888644755487624589985799964899857999989999999985 Q ss_pred CCCCCCCCCCHHHHHHHHH Q ss_conf 8788776700168999999 Q gi|254780420|r 368 HPESSPGPQDSYYLFSTFI 386 (396) Q Consensus 368 HPEa~PGP~D~~~~F~~F~ 386 (396) T Consensus 160 HPEs~~~~~~~~~if~nFl 178 (178) T cd01744 160 HPEASPGPHDTEYLFDEFL 178 (178) T ss_pred CCCCCCCCCCCHHHHHHHC T ss_conf 9979999977489897239

HHsearch alignment for GI: 254780420 and conserved domain: cd01744