>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=97.19  E-value=0.00097  Score=44.36  Aligned_cols=42  Identities=19%  Similarity=0.283  Sum_probs=17.6

Q ss_pred             CCEEEEECCCCHHHHHHHHHHHCCCCEEEEEECCCCCHHHHH
Q ss_conf             872899889813689999999579986999965788128988
Q gi|254781048|r    3 SNKIALIGSGMIGGTLAHLAVLKKLGDVVLLDIVDGMPRGKA   44 (320)
Q Consensus         3 ~~KV~IIGaG~VG~~~a~~~~~~~l~ei~L~D~~~~~~~g~~   44 (320)
T Consensus       178 ~~~vLviGaGem~~l~~~~L~~~g~~~i~v~nRt~~ra~~la  219 (311)
T cd05213         178 GKKVLVIGAGEMGELAAKHLAAKGVAEITIANRTYERAEELA  219 (311)
T ss_pred             CCEEEEECCCHHHHHHHHHHHHCCCCEEEEECCCHHHHHHHH
T ss_conf             167999868799999999999659982599768678999999