>cd04242 AAK_G5K_ProB AAK_G5K_ProB: Glutamate-5-kinase (G5K) catalyzes glutamate-dependent ATP cleavage; G5K transfers the terminal phosphoryl group of ATP to the gamma-carboxyl group of glutamate, in the first and controlling step of proline (and, in mammals, ornithine) biosynthesis. G5K is subject to feedback allosteric inhibition by proline or ornithine. In microorganisms and plants, proline plays an important role as an osmoprotectant and, in mammals, ornithine biosynthesis is crucial for proper ammonia detoxification, since a G5K mutation has been shown to cause human hyperammonaemia. Microbial G5K generally consists of two domains: a catalytic G5K domain and one PUA (pseudo uridine synthases and archaeosine-specific transglycosylases) domain, and some lack the PUA domain. G5K requires free Mg for activity, it is tetrameric, and it aggregates to higher forms in a proline-dependent way. G5K lacking the PUA domain remains tetrameric, active, and proline-inhibitable, but the Mg requir

Probab=99.86 E-value=5.1e-21 Score=136.72 Aligned_cols=127 Identities=30% Similarity=0.527 Sum_probs=100.9 Q ss_pred ECH-HHHHHHHHCCCEEEEC---CCCCCCCCCEECCCHHHHHHHHHHHHCHHHHHHHCCCCCEEECC------CCCCCCC Q ss_conf 569-9999999779849985---74317873200661479999999862511334322676335345------5555633 Q 537021.9.peg.3 10 VNR-TILDLLIKSGIIPVIA---PIAPGYDGATYNINADTFAGAIAEKLNVIRLLFLTDVPGVLDKN------RQLISKL 79 (142) Q Consensus 10 vd~-~~i~~lL~~g~iPVi~---pig~~~~G~~~nin~D~~a~~lA~~l~A~kli~ltdv~Gv~d~~------~~~i~~i 79 (142) T Consensus 110 ~n~~~ti~~LL~~g~iPIiNEND~vat---~ei~fGDnD~lAa~vA~~i~Ad~LiilTdVDGvY~~dP~~~~~Ak~i~~v 186 (251) T cd04242 110 LNARNTLETLLELGVIPIINENDTVAT---EEIRFGDNDRLSALVAGLVNADLLILLSDVDGLYDKNPRENPDAKLIPEV 186 (251) T ss_pred HHHHHHHHHHHHCCCEEEECCCCCCCC---CCCCCCCCCHHHHHHHHHCCCCEEEEEECCCCCCCCCCCCCCCCCCCCEE T ss_conf 999999999997896467558885521---22334477479999986518887999644673236898768766634263 Q ss_pred CH--HHHHHHHH---CCCCCCCHHHHHHHHHHHHHCCCCEEEEEECCCCCHHHHHHHCCCCCCCEEC Q ss_conf 88--89999962---6976786789999999999849988999525787689999967998663454 Q 537021.9.peg.3 80 SI--NEARTLIK---DGTISGGMIPKIETSIKAIENGVKSVAILDGKKPHSILMEIFTKNGSGTLLI 141 (142) Q Consensus 80 ~~--~e~~~l~~---~~~~~~gm~~Ki~~a~~a~~~Gv~~v~i~~~~~~~~ll~elft~~g~GT~i~ 141 (142) T Consensus 187 ~~~~~~i~~~~~~~~s~~gtGGM~sKl~AA~~a~~~Gi~-~~I~~g~~~~~i-~~~l~g~~vGT~f~ 251 (251) T cd04242 187 EEITDEIEAMAGGSGSSVGTGGMRTKLKAARIATEAGIP-VVIANGRKPDVL-LDILAGEAVGTLFL 251 (251) T ss_pred CCCCHHHHHHCCCCCCCCCCCCHHHHHHHHHHHHHCCCC-EEEEECCCCCHH-HHHHCCCCCCEEEC T ss_conf 579879997707788888738738999999999988996-999828997789-99976999841669

HHsearch alignment for GI: peg_394 and conserved domain: cd04242