QUED_RICBR
ID QUED_RICBR Reviewed; 138 AA.
AC Q1RHI6;
DT 23-JAN-2007, integrated into UniProtKB/Swiss-Prot.
DT 16-MAY-2006, sequence version 1.
DT 03-AUG-2022, entry version 84.
DE RecName: Full=6-carboxy-5,6,7,8-tetrahydropterin synthase;
DE Short=CPH4 synthase;
DE EC=4.1.2.50;
DE AltName: Full=Queuosine biosynthesis protein QueD;
GN Name=queD; OrderedLocusNames=RBE_1097;
OS Rickettsia bellii (strain RML369-C).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Rickettsiales;
OC Rickettsiaceae; Rickettsieae; Rickettsia; belli group.
OX NCBI_TaxID=336407;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=RML369-C;
RX PubMed=16703114; DOI=10.1371/journal.pgen.0020076;
RA Ogata H., La Scola B., Audic S., Renesto P., Blanc G., Robert C.,
RA Fournier P.-E., Claverie J.-M., Raoult D.;
RT "Genome sequence of Rickettsia bellii illuminates the role of amoebae in
RT gene exchanges between intracellular pathogens.";
RL PLoS Genet. 2:733-744(2006).
CC -!- FUNCTION: Catalyzes the conversion of 7,8-dihydroneopterin triphosphate
CC (H2NTP) to 6-carboxy-5,6,7,8-tetrahydropterin (CPH4) and acetaldehyde.
CC {ECO:0000250}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=7,8-dihydroneopterin 3'-triphosphate + H2O = 6-carboxy-
CC 5,6,7,8-tetrahydropterin + acetaldehyde + 2 H(+) + triphosphate;
CC Xref=Rhea:RHEA:27966, ChEBI:CHEBI:15343, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:18036, ChEBI:CHEBI:58462,
CC ChEBI:CHEBI:61032; EC=4.1.2.50;
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105; Evidence={ECO:0000250};
CC Note=Binds 1 zinc ion per subunit. {ECO:0000250};
CC -!- PATHWAY: Purine metabolism; 7-cyano-7-deazaguanine biosynthesis.
CC -!- MISCELLANEOUS: The active site is at the interface between 2 subunits.
CC The proton acceptor Cys is on one subunit, and the charge relay system
CC is on the other subunit (By similarity). {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the PTPS family. QueD subfamily. {ECO:0000305}.
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DR EMBL; CP000087; ABE05178.1; -; Genomic_DNA.
DR RefSeq; WP_011477756.1; NC_007940.1.
DR AlphaFoldDB; Q1RHI6; -.
DR SMR; Q1RHI6; -.
DR STRING; 336407.RBE_1097; -.
DR EnsemblBacteria; ABE05178; ABE05178; RBE_1097.
DR KEGG; rbe:RBE_1097; -.
DR eggNOG; COG0720; Bacteria.
DR HOGENOM; CLU_111016_1_1_5; -.
DR OMA; HATVFNK; -.
DR OrthoDB; 1770189at2; -.
DR UniPathway; UPA00391; -.
DR Proteomes; UP000001951; Chromosome.
DR GO; GO:0070497; F:6-carboxy-5,6,7,8-tetrahydropterin synthase activity; IEA:UniProtKB-EC.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0008616; P:queuosine biosynthetic process; IEA:UniProtKB-KW.
DR Gene3D; 3.30.479.10; -; 2.
DR InterPro; IPR007115; 6-PTP_synth/QueD.
DR InterPro; IPR038418; 6-PTP_synth/QueD_sf.
DR PANTHER; PTHR12589; PTHR12589; 1.
DR Pfam; PF01242; PTPS; 1.
PE 3: Inferred from homology;
KW Lyase; Metal-binding; Queuosine biosynthesis; Zinc.
FT CHAIN 1..138
FT /note="6-carboxy-5,6,7,8-tetrahydropterin synthase"
FT /id="PRO_0000272629"
FT ACT_SITE 23
FT /note="Proton acceptor"
FT /evidence="ECO:0000250"
FT ACT_SITE 68
FT /note="Charge relay system"
FT /evidence="ECO:0000250"
FT ACT_SITE 130
FT /note="Charge relay system"
FT /evidence="ECO:0000250"
FT BINDING 14
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000250"
FT BINDING 27
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000250"
FT BINDING 29
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000250"
SQ SEQUENCE 138 AA; 15985 MW; 4E19F7E941A9FB50 CRC64;
MIKCTRRIEF DAGHRIIGHQ NKCQYLHGHR YVLEITIAAK NTDELGMVVD FGLIKDLAKG
WVDENFDHSL ILHQGDKEIG QKIESHTGQK VYYLKNNPTA ENIALHLKNE IFPKLFESQK
FFVTNIKLFE TPNCFVEV
