>cd05213 NAD_bind_Glutamyl_tRNA_reduct NADP-binding domain of glutamyl-tRNA reductase. Glutamyl-tRNA reductase catalyzes the conversion of glutamyl-tRNA to glutamate-1-semialdehyde, initiating the synthesis of tetrapyrrole. Whereas tRNAs are generally associated with peptide bond formation in protein translation, here the tRNA activates glutamate in the initiation of tetrapyrrole biosynthesis in archaea, plants and many bacteria. In the first step, activated glutamate is reduced to glutamate-1-semi-aldehyde via the NADPH dependent glutamyl-tRNA reductase. Glutamyl-tRNA reductase forms a V-shaped dimer. Each monomer has 3 domains: an N-terminal catalytic domain, a classic nucleotide binding domain, and a C-terminal dimerization domain. Although the representative structure 1GPJ lacks a bound NADPH, a theoretical binding pocket has been described. (PMID 11172694). Amino acid dehydrogenase (DH)-like NAD(P)-binding domains are members of the Rossmann fold superfamily and include glutamate,

Probab=92.95 E-value=0.69 Score=24.84 Aligned_cols=155 Identities=17% Similarity=0.168 Sum_probs=98.4 Q ss_pred HHHHHHHHHHHHHHHCCCCC------HHHHHHHHHHCCCCHHHHHHHHCCCHHHHHHHHHHCCCEEEEEEECCCCCCCCC Q ss_conf 99999999999875303760------279999865337998899988589999999889863984799862143244366 Q gi|254780439|r 519 QQIKMIVDVEHRIREHGLPK------DFQNLQAIKAMGFSDARLSILSGIPCNEIRKIRHQMGLHPVFKCVDTCAGEFSS 592 (1162) Q Consensus 519 ~~i~~iv~~e~~l~~~~~~~------~~~~l~~aK~~GFSD~~IA~l~~~~e~~Vr~~R~~~~i~P~yK~VDtcAgEF~a 592 (1162) T Consensus 91 ~Av~HLfrVasGLdS~VlGE~qIlgQvK~A~~~A~~~g~~g~~L~~lfq~A~~~aKrVRteT~I~~~~vSv~~~av~~a~ 170 (311) T cd05213 91 DAVRHLFRVASGLDSMVVGETQILGQVKNAYKLAKEAGTSGKLLNRLFQKAIKVGKRVRTETGISRGAVSISSAAVELAE 170 (311) T ss_pred HHHHHHHHHHHCCCHHHCCCHHHHHHHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHHHHCCCCCCCCCHHHHHHHHHH T ss_conf 99999999872340010484789999999999999819813899999999999999887616788898889999999999 Q ss_pred CCCEEEEECCCCCCCCCCCCCCCCCCCEEEEECCCCEEECCCCCCCHHHHHHHHHHHHCCCCEEE-EECCCCCCCCCCCC Q ss_conf 58558972067766655322356777418997276302014766531899999999965980699-60686521123245 Q gi|254780439|r 593 PTSYMYSTYETNFINKPVSEDKVSDRKKIVILGGGPNRIGQGIEFDYCCCHASFSLKEAGFETIM-INCNPETVSTDYDI 671 (1162) Q Consensus 593 ~T~Y~YsTY~~e~~~~~~~e~~~~~~kkviVlGsGp~RIGqgiEFDy~~v~a~~aLr~~G~~tIm-IN~NPETVSTDyd~ 671 (1162) T Consensus 171 ~------------------~~~~l~~~~vLviGaGe-----------m~~l~~~~L~~~g~~~i~v~nRt~~ra---~~l 218 (311) T cd05213 171 K------------------IFGNLKGKKVLVIGAGE-----------MGELAAKHLAAKGVAEITIANRTYERA---EEL 218 (311) T ss_pred H------------------HHCCCCCCEEEEECCCH-----------HHHHHHHHHHHCCCCEEEEECCCHHHH---HHH T ss_conf 8------------------71872116799986879-----------999999999965998259976867899---999 Q ss_pred CCEEEEEECCHHHHHHHHHHHCCCCCCCEEEEECCCHHHH Q ss_conf 8637984167889999998748567822799844512466 Q gi|254780439|r 672 ADRLYFESLTEEDILEILRVEQQKGELVGIIVQFGGQTPL 711 (1162) Q Consensus 672 sDrLYFEplt~E~V~~I~~~E~p~g~~~~vi~q~gGqt~~ 711 (1162) T Consensus 219 a~~~g~~~~~~~~l~~~l~~~------DvvisaT~s~~~~ 252 (311) T cd05213 219 AKELGGNAVPLDELLELLNEA------DVVISATGAPHYA 252 (311) T ss_pred HHHCCCEEECHHHHHHHHHHC------CEEEEECCCCCCH T ss_conf 997498997299999999768------9999927999620

HHsearch alignment for GI: 254780439 and conserved domain: cd05213