HEM1_AKKM8
ID HEM1_AKKM8 Reviewed; 340 AA.
AC B2ULP2;
DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT 01-JUL-2008, sequence version 1.
DT 03-AUG-2022, entry version 82.
DE RecName: Full=Glutamyl-tRNA reductase {ECO:0000255|HAMAP-Rule:MF_00087};
DE Short=GluTR {ECO:0000255|HAMAP-Rule:MF_00087};
DE EC=1.2.1.70 {ECO:0000255|HAMAP-Rule:MF_00087};
GN Name=hemA {ECO:0000255|HAMAP-Rule:MF_00087}; OrderedLocusNames=Amuc_0091;
OS Akkermansia muciniphila (strain ATCC BAA-835 / DSM 22959 / JCM 33894 / BCRC
OS 81048 / CCUG 64013 / CIP 107961 / Muc).
OC Bacteria; Verrucomicrobia; Verrucomicrobiae; Verrucomicrobiales;
OC Akkermansiaceae; Akkermansia.
OX NCBI_TaxID=349741;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-835 / DSM 22959 / JCM 33894 / BCRC 81048 / CCUG 64013 / CIP
RC 107961 / Muc;
RX PubMed=21390229; DOI=10.1371/journal.pone.0016876;
RA van Passel M.W., Kant R., Zoetendal E.G., Plugge C.M., Derrien M.,
RA Malfatti S.A., Chain P.S., Woyke T., Palva A., de Vos W.M., Smidt H.;
RT "The genome of Akkermansia muciniphila, a dedicated intestinal mucin
RT degrader, and its use in exploring intestinal metagenomes.";
RL PLoS ONE 6:E16876-E16876(2011).
CC -!- FUNCTION: Catalyzes the NADPH-dependent reduction of glutamyl-tRNA(Glu)
CC to glutamate 1-semialdehyde (GSA). {ECO:0000255|HAMAP-Rule:MF_00087}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(S)-4-amino-5-oxopentanoate + NADP(+) + tRNA(Glu) = H(+) + L-
CC glutamyl-tRNA(Glu) + NADPH; Xref=Rhea:RHEA:12344, Rhea:RHEA-
CC COMP:9663, Rhea:RHEA-COMP:9680, ChEBI:CHEBI:15378, ChEBI:CHEBI:57501,
CC ChEBI:CHEBI:57783, ChEBI:CHEBI:58349, ChEBI:CHEBI:78442,
CC ChEBI:CHEBI:78520; EC=1.2.1.70; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_00087};
CC -!- PATHWAY: Porphyrin-containing compound metabolism; protoporphyrin-IX
CC biosynthesis; 5-aminolevulinate from L-glutamyl-tRNA(Glu): step 1/2.
CC {ECO:0000255|HAMAP-Rule:MF_00087}.
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00087}.
CC -!- DOMAIN: Possesses an unusual extended V-shaped dimeric structure with
CC each monomer consisting of three distinct domains arranged along a
CC curved 'spinal' alpha-helix. The N-terminal catalytic domain
CC specifically recognizes the glutamate moiety of the substrate. The
CC second domain is the NADPH-binding domain, and the third C-terminal
CC domain is responsible for dimerization. {ECO:0000255|HAMAP-
CC Rule:MF_00087}.
CC -!- MISCELLANEOUS: During catalysis, the active site Cys acts as a
CC nucleophile attacking the alpha-carbonyl group of tRNA-bound glutamate
CC with the formation of a thioester intermediate between enzyme and
CC glutamate, and the concomitant release of tRNA(Glu). The thioester
CC intermediate is finally reduced by direct hydride transfer from NADPH,
CC to form the product GSA. {ECO:0000255|HAMAP-Rule:MF_00087}.
CC -!- SIMILARITY: Belongs to the glutamyl-tRNA reductase family.
CC {ECO:0000255|HAMAP-Rule:MF_00087}.
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DR EMBL; CP001071; ACD03936.1; -; Genomic_DNA.
DR RefSeq; WP_012419151.1; NC_010655.1.
DR AlphaFoldDB; B2ULP2; -.
DR SMR; B2ULP2; -.
DR STRING; 349741.Amuc_0091; -.
DR EnsemblBacteria; ACD03936; ACD03936; Amuc_0091.
DR KEGG; amu:Amuc_0091; -.
DR eggNOG; COG0373; Bacteria.
DR HOGENOM; CLU_035113_3_0_0; -.
DR OMA; FAFKCAA; -.
DR OrthoDB; 1358620at2; -.
DR BioCyc; AMUC349741:G1GBX-112-MON; -.
DR UniPathway; UPA00251; UER00316.
DR Proteomes; UP000001031; Chromosome.
DR GO; GO:0008883; F:glutamyl-tRNA reductase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0050661; F:NADP binding; IEA:InterPro.
DR GO; GO:0006782; P:protoporphyrinogen IX biosynthetic process; IEA:UniProtKB-UniPathway.
DR Gene3D; 3.30.460.30; -; 1.
DR HAMAP; MF_00087; Glu_tRNA_reductase; 1.
DR InterPro; IPR000343; 4pyrrol_synth_GluRdtase.
DR InterPro; IPR015895; 4pyrrol_synth_GluRdtase_N.
DR InterPro; IPR036343; GluRdtase_N_sf.
DR InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR InterPro; IPR006151; Shikm_DH/Glu-tRNA_Rdtase.
DR Pfam; PF05201; GlutR_N; 1.
DR Pfam; PF01488; Shikimate_DH; 1.
DR SUPFAM; SSF51735; SSF51735; 1.
DR SUPFAM; SSF69742; SSF69742; 1.
DR TIGRFAMs; TIGR01035; hemA; 1.
PE 3: Inferred from homology;
KW NADP; Oxidoreductase; Porphyrin biosynthesis; Reference proteome.
FT CHAIN 1..340
FT /note="Glutamyl-tRNA reductase"
FT /id="PRO_1000093112"
FT ACT_SITE 50
FT /note="Nucleophile"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT BINDING 49..52
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT BINDING 108
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT BINDING 113..115
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT BINDING 119
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT BINDING 188..193
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT SITE 98
FT /note="Important for activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
SQ SEQUENCE 340 AA; 37606 MW; 27D3C2F5FF5D3612 CRC64;
MRMVCLGLNH RTAPVEIRER FAVPSHKLRE EGQRIRSLPG VDQCVVLSTC NRMEIYYWSN
APENAQEHIL SHFLGDGRGE LDMASYFYSH QGEDALGHLC RVLSGLDSMV LGETEIFGQV
KTAYQTALDA GVTAACANKT FQKAFTIGKK VRTESQIHAG ATSVGSVAVE LAEQIFGDLS
GTRVLILGAG EMSRVTGRAL HARGAEGIYV ANRSFDRAVE LAGMIGGQAI RYDVWGNYLR
DIDVVVAATA APHCIITRET LLPLRASRKY RSLFLIDISV PRNISPDVAD IDEVYLYDID
TLTQLADEAK RSRKQEVSRC EAIIRDSISR YFPDSALYDQ
