RIB7_KLUMA
ID RIB7_KLUMA Reviewed; 249 AA.
AC Q9P4B8;
DT 01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2000, sequence version 1.
DT 03-AUG-2022, entry version 61.
DE RecName: Full=2,5-diamino-6-ribosylamino-4(3H)-pyrimidinone 5'-phosphate reductase;
DE Short=DAROPP reductase;
DE Short=DARP reductase;
DE EC=1.1.1.302;
DE AltName: Full=2,5-diamino-6-(5-phospho-D-ribosylamino)pyrimidin-4(3H)-one reductase;
DE AltName: Full=2,5-diamino-6-ribitylamino-4(3H)-pyrimidinone 5'-phosphate synthase;
DE Short=DARIPP synthase;
GN Name=RIB7;
OS Kluyveromyces marxianus (Yeast) (Candida kefyr).
OC Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC Saccharomycetales; Saccharomycetaceae; Kluyveromyces.
OX NCBI_TaxID=4911;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=ATCC 12424 / NRRL Y-610;
RX PubMed=10974568; DOI=10.1016/s0378-1119(00)00310-3;
RA Ladriere J.-M., Georis I., Guerineau M., Vandenhaute J.;
RT "Kluyveromyces marxianus exhibits an ancestral Saccharomyces cerevisiae
RT genome organization downstream of ADH2.";
RL Gene 255:83-91(2000).
CC -!- FUNCTION: Catalyzes an early step in riboflavin biosynthesis, the
CC NADPH-dependent reduction of the ribose side chain of 2,5-diamino-6-
CC ribosylamino-4(3H)-pyrimidinone 5'-phosphate, yielding 2,5-diamino-6-
CC ribitylamino-4(3H)-pyrimidinone 5'-phosphate. {ECO:0000250}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2,5-diamino-6-(1-D-ribitylamino)pyrimidin-4(3H)-one 5'-
CC phosphate + NADP(+) = 2,5-diamino-6-(1-D-ribosylamino)pyrimidin-
CC 4(3H)-one 5'-phosphate + H(+) + NADPH; Xref=Rhea:RHEA:27278,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:57783, ChEBI:CHEBI:58349,
CC ChEBI:CHEBI:58890, ChEBI:CHEBI:59545; EC=1.1.1.302;
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2,5-diamino-6-(1-D-ribitylamino)pyrimidin-4(3H)-one 5'-
CC phosphate + NAD(+) = 2,5-diamino-6-(1-D-ribosylamino)pyrimidin-4(3H)-
CC one 5'-phosphate + H(+) + NADH; Xref=Rhea:RHEA:27274,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:57540, ChEBI:CHEBI:57945,
CC ChEBI:CHEBI:58890, ChEBI:CHEBI:59545; EC=1.1.1.302;
CC -!- PATHWAY: Cofactor biosynthesis; riboflavin biosynthesis.
CC -!- SUBUNIT: Homodimer. {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the HTP reductase family. {ECO:0000305}.
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DR EMBL; AF225206; AAF91239.1; -; Genomic_DNA.
DR AlphaFoldDB; Q9P4B8; -.
DR SMR; Q9P4B8; -.
DR UniPathway; UPA00275; -.
DR GO; GO:0008703; F:5-amino-6-(5-phosphoribosylamino)uracil reductase activity; IEA:InterPro.
DR GO; GO:0050661; F:NADP binding; IEA:InterPro.
DR GO; GO:0009231; P:riboflavin biosynthetic process; IEA:UniProtKB-UniPathway.
DR Gene3D; 3.40.430.10; -; 1.
DR InterPro; IPR024072; DHFR-like_dom_sf.
DR InterPro; IPR011549; RibD_C.
DR InterPro; IPR002734; RibDG_C.
DR Pfam; PF01872; RibD_C; 1.
DR SUPFAM; SSF53597; SSF53597; 1.
DR TIGRFAMs; TIGR00227; ribD_Cterm; 1.
PE 3: Inferred from homology;
KW NADP; Oxidoreductase; Riboflavin biosynthesis.
FT CHAIN 1..249
FT /note="2,5-diamino-6-ribosylamino-4(3H)-pyrimidinone 5'-
FT phosphate reductase"
FT /id="PRO_0000135940"
FT BINDING 79
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000250"
FT BINDING 83
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000250"
FT BINDING 164
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT BINDING 187..191
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000250"
SQ SEQUENCE 249 AA; 28142 MW; 383AC9E5EFC902EF CRC64;
MVLLPLKKDL VPFLEPYLPD EERDADKEKP YVILTYAQSL DSRIAKIKGT RTFISHEETK
TMTHYLRYKF DAIMLGCGTV MIDDPGLNCK WWPEDEKPEH LAGISPRPII LDPNCKWKFA
DSKMKKLYEA GDGKAPIIVV KELPSEPEEG VDYLVMRTNF TGKMDWSDML VQLKSKFNVK
SVMVEGGGIV INDLLQRPNL VDALIITLGA TFLGSEGVEV SPLVEIKLKD VSWWTGDLDT
VLCSRLVTH
