>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=97.00 E-value=0.0048 Score=40.05 Aligned_cols=170 Identities=21% Similarity=0.217 Sum_probs=107.1 Q ss_pred HHHHHHHHCCCCEEEEECCCCCHHHHHHHHHHHCC-----CCCEEEHHHCCCCHHHHHHHHHHHHHCCCCCCCCCCCHHH Q ss_conf 89999862698526542388988999999987088-----8460622206480157999999987189421687721899 Q gi|254780137|r 109 KAVLFKKFAGINVFDIEINAKDVDTMVSTIVALEP-----TFGGINLEDIKAPECFEVERILSQKLKIPFLHDDQHGTAV 183 (779) Q Consensus 109 K~~L~k~~agid~~~i~~~~~d~~e~i~~v~~~~p-----~fg~i~lEDi~~p~~f~i~~~l~~~~~ipvf~DD~qGTa~ 183 (779) T Consensus 93 v~HLfrVasGLdS~VlGE-----~qIlgQvK~A~~~A~~~g~~g~~L~-~lfq~A~~~aKrVRteT~I------~~~~vS 160 (311) T cd05213 93 VRHLFRVASGLDSMVVGE-----TQILGQVKNAYKLAKEAGTSGKLLN-RLFQKAIKVGKRVRTETGI------SRGAVS 160 (311) T ss_pred HHHHHHHHHCCCHHHCCC-----HHHHHHHHHHHHHHHHCCCCHHHHH-HHHHHHHHHHHHHHHHCCC------CCCCCC T ss_conf 999999872340010484-----7899999999999998198138999-9999999999988761678------889888 Q ss_pred HHHHHHHHHHHHHCCCHHHCEEEEECCCHHHHHHHHHHHHCCCCCCCEEEEECCCEEECCCCCCCCHHHHHHHHC----- Q ss_conf 999999999997098822411787425425678999999819885758999559603078733266788977450----- Q gi|254780137|r 184 TVTAATLNGMKLVGKKFSDIKIVTLGAGAAALACLNLLVTMGVRRENIWVYDLEGLVYEGREKKFDKWKSVYAQK----- 258 (779) Q Consensus 184 v~lA~llnAl~~~gk~l~~~~iv~~GaGaAg~~~a~ll~~~g~~~~~i~~~D~~Gli~~~r~~~~~~~~~~~a~~----- 258 (779) T Consensus 161 v~~~av~~a~~~~~-~l~~~~vLviGaGem~~l~~~~L~~~g~~--~i~v~nR----t~~r-------a~~la~~~g~~~ 226 (311) T cd05213 161 ISSAAVELAEKIFG-NLKGKKVLVIGAGEMGELAAKHLAAKGVA--EITIANR----TYER-------AEELAKELGGNA 226 (311) T ss_pred HHHHHHHHHHHHHC-CCCCCEEEEECCCHHHHHHHHHHHHCCCC--EEEEECC----CHHH-------HHHHHHHCCCEE T ss_conf 99999999998718-72116799986879999999999965998--2599768----6789-------999999749899 Q ss_pred CCCCCHHHHCCCCCEEEECCC-CC-CCCHHHHHHCC-CCC-EEEEECCCC Q ss_conf 889888886058837862578-87-78988997218-997-799917872 Q gi|254780137|r 259 SGPKPLSETMNNADVFLGLSV-AG-ALDPAILKFMA-EKP-LIMVLANPN 304 (779) Q Consensus 259 ~~~~~l~ea~~~adv~iG~S~-~g-~~t~e~v~~M~-~~P-iIfaLsNP~ 304 (779) T Consensus 227 ~~~~~l~~~l~~~DvvisaT~s~~~~~~~~~~~~~~~~~~~~iiDLavPR 276 (311) T cd05213 227 VPLDELLELLNEADVVISATGAPHYAKIVERAMKKRSGKPRLIVDLAVPR 276 (311) T ss_pred ECHHHHHHHHHHCCEEEEECCCCCCHHHHHHHHHHCCCCCEEEEEECCCC T ss_conf 72999999997689999927999620359999753479976999917999

HHsearch alignment for GI: 254780137 and conserved domain: cd05213