>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=98.47 E-value=3.1e-06 Score=60.91 Aligned_cols=93 Identities=20% Similarity=0.389 Sum_probs=66.2 Q ss_pred CCEEEEECCCHHHHHHHHHHHHCCCCCCEEEEEECCHHHHHHHHHHHHHHCCCCCCCCCEEEEECCCCHHHHHHHHHHCC Q ss_conf 73199984987799999999960898725999639999999999873430245555573089943789899999997539 Q gi|254780742|r 2 KKNVLIIGAGGVAHVVAHKCAQNNDILGDINIASRTLQKCSKIIDSIYKKKSLKIDGKLAIHQVDALNIKAVVELIKKTN 81 (419) Q Consensus 2 ~k~ilv~GaG~vG~~~~~~L~~~~~~~~~i~va~r~~~~~~~~~~~l~~~~~~~~~~~~~~~~~D~~d~~~l~~~~~~~~ 81 (419) T Consensus 178 ~~~vLviGaGem~~l~~~~L~~~g~--~~i~v~nRt~~ra~~la~~~g~----------~~-----~~~~~l~~~l~--~ 238 (311) T cd05213 178 GKKVLVIGAGEMGELAAKHLAAKGV--AEITIANRTYERAEELAKELGG----------NA-----VPLDELLELLN--E 238 (311) T ss_pred CCEEEEECCCHHHHHHHHHHHHCCC--CEEEEECCCHHHHHHHHHHCCC----------EE-----ECHHHHHHHHH--H T ss_conf 1679998687999999999996599--8259976867899999997498----------99-----72999999997--6 Q ss_pred CCEEEECCCCCCCHHHHHHHHHC----CCCEEEECC Q ss_conf 72999737610032789999862----886896036 Q gi|254780742|r 82 SQIIINVGSSFLNMSVLRACIDS----NVAYIDTAI 113 (419) Q Consensus 82 ~dvVin~~~p~~~~~v~~a~i~~----g~hyvD~s~ 113 (419) T Consensus 239 ~DvvisaT~s~~~~~~~~~~~~~~~~~~~~iiDLav 274 (311) T cd05213 239 ADVVISATGAPHYAKIVERAMKKRSGKPRLIVDLAV 274 (311) T ss_pred CCEEEEECCCCCCHHHHHHHHHHCCCCCEEEEEECC T ss_conf 899999279996203599997534799769999179

HHsearch alignment for GI: 254780742 and conserved domain: cd05213