>cd04254 AAK_UMPK-PyrH-Ec UMP kinase (UMPK)-Ec, the microbial/chloroplast uridine monophosphate kinase (uridylate kinase) enzyme that catalyzes UMP phosphorylation and plays a key role in pyrimidine nucleotide biosynthesis; regulation of this process is via feed-back control and via gene repression of carbamoyl phosphate synthetase (the first enzyme of the pyrimidine biosynthesis pathway). The UMP kinase of E. coli (Ec) is known to function as a homohexamer, with GTP and UTP being allosteric effectors. Like other related enzymes (carbamate kinase, aspartokinase, and N-acetylglutamate kinase) the E. coli and most bacterial and chloroplast UMPKs (this CD) have a conserved, N-terminal, lysine residue proposed to function in the catalysis of the phosphoryl group transfer, whereas most archaeal UMPKs appear to lack this residue and the Pyrococcus furiosus structure has an additional Mg ion bound to the ATP molecule which is proposed to function as the catalysis instead. Members of this CD be

Probab=100.00 E-value=2.1e-37 Score=271.70 Aligned_cols=219 Identities=28% Similarity=0.382 Sum_probs=176.5 Q ss_pred CEEEEEECCCCCC-------CHHHHHHHHHHHHHHHHCCCCEEEEEECCCCHHHHHHHHHHHHHCCCCHHHHHHHHHHHH Q ss_conf 6699960858458-------889999999999999967998899980687304899999998614899889999998312 Q gi|254780873|r 2 ARIVMKFGGTSVA-------NIDCIRSAALHVKREVDRGQEVAMVVSAMSGETDRLAELCRQVTSIDNARERDVVISTGE 74 (411) Q Consensus 2 ~~iV~KfGGtSv~-------~~~~i~~v~~~i~~~~~~g~~~ivVvSA~~g~Td~L~~l~~~~~~~~~~~~~d~i~s~GE 74 (411) T Consensus 1 kRIViKiGGs~L~~~~~~~ld~~~I~~la~~I~~l~~~G~eVviVvgg--G~i~rg~~-~~~~~~--~~~~~d~~g~lat 75 (231) T cd04254 1 KRVLLKLSGEALAGENGFGIDPEVLNRIAREIKEVVDLGVEVAIVVGG--GNIFRGAS-AAEAGM--DRATADYMGMLAT 75 (231) T ss_pred CEEEEEECHHHCCCCCCCCCCHHHHHHHHHHHHHHHHCCCEEEEEECC--CCHHCCHH-HHHCCC--CCCHHHHHHHHHH T ss_conf 959999516660789998859999999999999999779869999817--73012422-453466--6351889999999 Q ss_pred HHHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHCCEEEEECCCCCCCCCCEEEECCCCCC Q ss_conf 99999999999843998635673324551213355200012362100334310680586034333556842443068624 Q gi|254780873|r 75 QVSSGLMVLALQSLGIQAISLQGWQIPIMTDSLHGMARICRVDEKKIVTHLKKKQVVVITGFQGLSHDNSVTTLGRGGSD 154 (411) Q Consensus 75 ~~s~~l~a~~l~~~G~~a~~l~~~~~~i~t~~~~~~a~~~~~~~~~l~~~l~~~~v~v~~Gf~g~~~~g~~ttlgRGGSD 154 (411) T Consensus 76 ~~n~~ll~~al~~~g~~~~~~t~~~~~~~~~~---------~~~~~~~~~L~~g~VvI~~g~~g---~~~~tt------D 137 (231) T cd04254 76 VINALALQDALESLGVKTRVMSAIPMQGVAEP---------YIRRRAIRHLEKGRVVIFAGGTG---NPFFTT------D 137 (231) T ss_pred HHHHHHHHHHHHHCCCCEEEEECCCCCCCCCC---------CCHHHHHHHHHCCCEEEEECCCC---CCCCCC------H T ss_conf 99999999999867998799742234422231---------12899999973598899966757---876551------1 Q ss_pred HHHHHHHHHHCHHHHHHHCCHHHHEECCCCCCCCCCEECCCCHHHHHHHHHCCCCCHHHHHHHHHHHCCCEEEEECCCCC Q ss_conf 28999998847345565346144024584212344110567999999988403110137887643313852676112377 Q gi|254780873|r 155 TSAVAIAAAIKADRCDIYTDVCGIYTTDPRIEPKAHLMKKISFEEMLEMSSLGAKVMQVRSVELAMLYKMCLFVRSSFED 234 (411) Q Consensus 155 ~tA~~ia~~l~A~~~~i~tdV~Gi~taDPr~v~~a~~i~~lsy~Ea~eLa~~Gakvlhp~~~~~~~~~~ipi~i~ntf~~ 234 (411) T Consensus 138 ~~aa~~A~~~~ad~~~~~tdvdgvy~~dP~~~~~a~~~~~is~~e~~~~---~~~v~d~~A~~~a~~~~i~~~v~~~~~~ 214 (231) T cd04254 138 TAAALRAIEINADVILKATKVDGVYDADPKKNPNAKRYDHLTYDEVLSK---GLKVMDATAFTLCRDNNLPIVVFNINEP 214 (231) T ss_pred HHHHHHHHHCCCCEEEEEEEECCCCCCCCCCCCCCEECCCCCHHHHHHC---CCCCCCHHHHHHHHHCCCCEEEECCCCC T ss_conf 7999999872998899976316622689655755554030569999847---7662439999999986998899739995 Q ss_pred CC-----CCCCCCCCCC Q ss_conf 77-----7654354545 Q gi|254780873|r 235 HG-----QQEQLGTLIC 246 (411) Q Consensus 235 ~~-----~~~~~GT~I~ 246 (411) T Consensus 215 ~~I~k~l~Ge~~GTlI~ 231 (231) T cd04254 215 GNLLKAVKGEGVGTLIS 231 (231) T ss_pred CHHHHHHCCCCCCEEEC T ss_conf 26999977998864759

HHsearch alignment for GI: 254780873 and conserved domain: cd04254