>cd03312 CIMS_N_terminal_like CIMS - Cobalamine-independent methonine synthase, or MetE, N-terminal domain_like. Many members have been characterized as 5-methyltetrahydropteroyltriglutamate-homocysteine methyltransferases, EC:2.1.1.14, mostly from bacteria and plants. This enzyme catalyses the last step in the production of methionine by transferring a methyl group from 5-methyltetrahydrofolate to L-homocysteine without using an intermediate methyl carrier. The active enzyme has a dual (beta-alpha)8-barrel structure, and this model covers the N-terminal barrel, and a few single-barrel sequences most similar to the N-terminal barrel. It is assumed that the homologous N-terminal barrel has evolved from the C-terminus via gene duplication and has subsequently lost binding sites, and it seems as if the two barrels forming the active enzyme may sometimes reside on different polypeptides. The C-terminal domain incorporates the Zinc ion, which binds and activates homocysteine. Side chains fro

Probab=96.22 E-value=0.14 Score=31.96 Aligned_cols=166 Identities=17% Similarity=0.150 Sum_probs=96.0 Q ss_pred CCHHHHHHHHHHHHHHHHHCCCCCCCHHHHHHHHCCCHHHHHHHHHHHHHHHHHHHHHHHHCCCCEEEECCCCHH-HCCH Q ss_conf 320111147999999996124677652467753013722289999999999999977777549816784383110-0683 Q gi|254780812|r 137 HITLIGFCGAPWTVASYMISGGFIKDHGQNRVFAYQNSRAFNWLLDFLSDVSAEYLIAQIHAGVDVIQIFDTHAG-CLGE 215 (346) Q Consensus 137 ~~pLIGF~GgP~TlasYmieG~~sk~~~~~~~~~~~~p~~~~~ll~~lt~~~~~yl~~Qi~aGad~iqIFDs~ag-~Ls~ 215 (346) T Consensus 150 ~kPvL--v-GPvTfL~L---sK~~-----------~~~~~~~~~l~~Ll~~Y~~lL~~L~~~G~~wVQiDEP~Lv~Dl~~ 212 (360) T cd03312 150 TKPVL--L-GPVTFLKL---SKAK-----------GGGFDRLSLLDKLLPVYKELLKKLAAAGAEWVQIDEPALVLDLPE 212 (360) T ss_pred CCCEE--E-CHHHHHHH---HCCC-----------CCCCCHHHHHHHHHHHHHHHHHHHHHCCCCEEEECCCHHHCCCCH T ss_conf 87579--7-44899887---4224-----------788798999999999999999999976997797147523047999 Q ss_pred HHHHHHHCCCHHHHHHHHHHHCCCCEEE--CCCCCCCCCHHHHHCCCCCCEEECCCCCC---HHHHHHHC--CCEEEECC Q ss_conf 5677761272268999986308862360--24311000013420147872230467799---89999707--98469688 Q gi|254780812|r 216 HEFENYAARSVGRIISAVRRKYPNAKFI--SFAKGAGYMLKNYRRLTDSNAIGLDWSVP---LSFALELQ--KEGPVQGN 288 (346) Q Consensus 216 ~~f~~f~~p~~kkI~~~ik~~~~~vpiI--~f~~g~~~~l~~~~~~~g~d~isiD~~~d---l~~a~~~~--~~~~lqGN 288 (346) T Consensus 213 ~~~~~~~-----~~Y~~L~~~~~~~kill~TYFg~~~~~~~~l~~-lpv~gl~lDlv~g~~~l~~i~~~~~~~k~L~aGV 286 (360) T cd03312 213 EWLAAFK-----RAYEELAKAAPGLKLLLATYFGSLGENLDLLAS-LPVDGLHLDLVRGPENLEAVLKAGFADKVLSAGV 286 (360) T ss_pred HHHHHHH-----HHHHHHHHCCCCCEEEEECCCCCHHHHHHHHHC-CCCCEEEEEECCCHHHHHHHHHHCCCCCEEEEEE T ss_conf 9999999-----999999715789719998876348899999975-9986799860578667999996089986799975 Q ss_pred CCHHHH-CCCHHHHHHHHHHHHHHHCCCCCEEEECCCCC Q ss_conf 884677-09988999999999997325992896089763 Q gi|254780812|r 289 LDPMRL-VVGNQVMIDGVNAILDVLGSGPFIFNLGHGIT 326 (346) Q Consensus 289 ldP~~L-~~~~e~i~~~~~~~l~~~~~~~~I~nLGhGi~ 326 (346) T Consensus 287 VdGRNIWr~dl~~~l~~l~~l~~~~~-~~l~vs~ScSLL 324 (360) T cd03312 287 VDGRNIWRADLAASLALLETLAAILG-DRLVVSPSCSLL 324 (360) T ss_pred ECCCEECHHCHHHHHHHHHHHHHHHC-CCEEEECCCCCC T ss_conf 45845243179999999999998628-968996888654

HHsearch alignment for GI: 254780812 and conserved domain: cd03312