>TIGR02075 pyrH_bact uridylate kinase; InterPro: IPR015963 Uridylate kinases (also known as UMP kinases) are key enzymes in the synthesis of nucleoside triphosphates. They catalyse the reversible transfer of the gamma-phosphoryl group from an ATP donor to UMP, yielding UDP, which is the starting point for the synthesis of all other pyrimidine nucleotides. The eukaryotic enzyme has a dual specificity, phosphorylating both UMP and CMP, while the bacterial enzyme is specific to UMP. The bacterial enzyme shows no sequence similarity to the eukaryotic enzyme or other nucleoside monophosphate kinases, but rather appears to be part of the amino acid kinase family. It is dependent on magnesium for activity and is activated by GTP and repressed by UTP , . In many bacterial genomes, the gene tends to be located immediately downstream of elongation factor T and upstream of ribosome recycling factor. A related protein family, believed to be equivalent in function is found in the archaea and in spirochetes. Structurally, the bacterial and archaeal proteins are homohexamers centred around a hollow nucleus and organised as a trimer of dimers , . Each monomer within the protein forms the amino acid kinase fold and can be divided into an N-terminal region which binds UMP and mediates intersubunit interactions within the dimer, and a C-terminal region which binds ATP and contains a mobile loop covering the active site. Inhibition of enzyme activity by UTP appears to be due to competition for the binding site for UMP, not allosteric inhibition as was previously suspected. This entry represents the bacterial proteins..

Probab=100.00 E-value=0 Score=337.02 Aligned_cols=232 Identities=57% Similarity=0.893 Sum_probs=224.8 Q ss_pred CEEEEEEEEEEEEEC-CCCCCCCHHHHHHHHHHHHHHHHCCCEEEEEECCCCCHHHHHHHCCCCCCCCHHHHHHHHHHHH Q ss_conf 249999940036853-8877708999999999999999769909998236541023344203777754024678888898 Q gi|254780777|r 6 YKRVLLKVSGEALAG-ISGFGVDIDSVNRICADIAEVYAKGIEIGIVVGGGNIFRGSQVVAENYLLCERSTVDSMGMLST 84 (242) Q Consensus 6 ~KrIViKiGGSsL~~-~~~~~~~~~~i~~ia~~I~~~~~~g~~vviV~sg~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 84 (242) T Consensus 1 ~kRvLlKLSGEaL~g~~~~f~ID~~~l~~iA~eik~~~~~G~evgIViGGGNIfRG~~~~---~~Gi~R~~aDymGMLAT 77 (236) T TIGR02075 1 YKRVLLKLSGEALAGKDSQFGIDPKRLNRIANEIKEVVKKGIEVGIVIGGGNIFRGKSAA---ELGIDRVSADYMGMLAT 77 (236) T ss_pred CCEEEEEECCHHHCCCCCCCCCCHHHHHHHHHHHHHHHHCCCEEEEEECCHHHHHHHHHH---HCCCCEEECCCCCHHHH T ss_conf 964899961043247888864268999999999999986794899997782788778898---74896111432305899 Q ss_pred HHHHHHHHHHHHHHCCCCCCCC-CCHHH-HHHHHHHHHHHCCHHHHCCCCCCCCCCCCCCCCCHHHHHHHHHHHCHHHHH Q ss_conf 9999999999976188641134-00100-245665432100001100111112465567776215788888641644665 Q gi|254780777|r 85 VINALALDLALRKINVPTVILS-SIFMP-QVCEVFSCRNAVSYLSQGKVVIFSGGTGNAFLTTDSAAALRASEIGADVIL 162 (242) Q Consensus 85 ~~~~~~~~~~~~~~~~~~~~~~-~~~~~-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~D~~a~~ia~~~~ad~l~ 162 (242) T Consensus 78 viNglaL~~~L~~~g~~~~V~Sfai~~~~~i~E~Y~~~~a~~~le~g~vVIF~gGtGnPfFTTDtaA~LRAiEi~aD~~L 157 (236) T TIGR02075 78 VINGLALKDALEKLGLKTRVLSFAISMPKQICESYIRRKAIKHLEKGKVVIFSGGTGNPFFTTDTAAALRAIEINADVIL 157 (236) T ss_pred HHHHHHHHHHHHHCCCCEEEEEEEEECCCCCCCCCCHHHHHHHHHCCCEEEEECCCCCCCCHHHHHHHHHHHHHCCEEEE T ss_conf 99999999888736995689877753586413232278999985359789995589869632115888766643134799 Q ss_pred HCCC-CCCCCCCCCCCCCCCCCCCCCCHHHHHHCCCCCCCHHHHHHHHHCCCCEEEEECCCCCHHHHHHCCCCCCCEEC Q ss_conf 1475-43512343223444444441159999855998140999999997499699951898547999977998782466 Q gi|254780777|r 163 KGTQ-VDGVYSADPRVHASSTRFDSLTYNQFIEKGLKVMDCASVVLARDCSIPIIVFSIHSPGGIWGGLSGIGRSTIIS 240 (242) Q Consensus 163 i~td-vdGiyt~dP~~~~~ak~i~~is~~e~l~~G~~v~~~~A~~~a~~~gI~v~I~ng~~~~~i~~~l~Ge~~GT~I~ 240 (242) T Consensus 158 kgt~GVDGVY~~DPkknk~A~~y~~itY~~~L~~~L~VMD~TA~~La~dnnlpi~VFnI~~~g~l~~vi~g~~~gTlv~ 236 (236) T TIGR02075 158 KGTNGVDGVYTADPKKNKDAKKYDTITYNEVLKKNLKVMDLTAFSLAKDNNLPIVVFNIDEPGALKKVILGKGIGTLVS 236 (236) T ss_pred EECCCCCCCCCCCCCCCCCCEECCCCCHHHHHHCCCCHHHHHHHHHHHHCCCCEEEECCCCCCHHHHHHCCCCCEEEEC T ss_conf 8104888023587885987523166798999861471135899999987789759966665301645322784457528

HHsearch alignment for GI: 254780777 and conserved domain: TIGR02075