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Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]

 R0EBK1_CAUVI            Unreviewed;       392 AA.
R0EBK1;
26-JUN-2013, integrated into UniProtKB/TrEMBL.
26-JUN-2013, sequence version 1.
16-JAN-2019, entry version 47.
RecName: Full=Multifunctional fusion protein {ECO:0000256|HAMAP-Rule:MF_00179, ECO:0000256|HAMAP-Rule:MF_00180};
Includes:
RecName: Full=GTP cyclohydrolase-2 {ECO:0000256|HAMAP-Rule:MF_00179};
EC=3.5.4.25 {ECO:0000256|HAMAP-Rule:MF_00179};
AltName: Full=GTP cyclohydrolase II {ECO:0000256|HAMAP-Rule:MF_00179};
Includes:
RecName: Full=3,4-dihydroxy-2-butanone 4-phosphate synthase {ECO:0000256|HAMAP-Rule:MF_00180};
Short=DHBP synthase {ECO:0000256|HAMAP-Rule:MF_00180};
EC=4.1.99.12 {ECO:0000256|HAMAP-Rule:MF_00180};
Name=ribA {ECO:0000256|HAMAP-Rule:MF_00179};
Synonyms=ribB {ECO:0000256|HAMAP-Rule:MF_00180};
ORFNames=OR37_01047 {ECO:0000313|EMBL:ENZ82853.1};
Caulobacter vibrioides OR37.
Bacteria; Proteobacteria; Alphaproteobacteria; Caulobacterales;
Caulobacteraceae; Caulobacter.
NCBI_TaxID=1292034 {ECO:0000313|EMBL:ENZ82853.1, ECO:0000313|Proteomes:UP000013063};
[1] {ECO:0000313|EMBL:ENZ82853.1, ECO:0000313|Proteomes:UP000013063}
NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
STRAIN=OR37 {ECO:0000313|EMBL:ENZ82853.1,
ECO:0000313|Proteomes:UP000013063};
PubMed=23792749;
Utturkar S.M., Bollmann A., Brzoska R.M., Klingeman D.M.,
Epstein S.E., Palumbo A.V., Brown S.D.;
"Draft Genome Sequence for Caulobacter sp. Strain OR37, a Bacterium
Tolerant to Heavy Metals.";
Genome Announc. 1:0-0(2013).
-!- FUNCTION: Catalyzes the conversion of D-ribulose 5-phosphate to
formate and 3,4-dihydroxy-2-butanone 4-phosphate.
{ECO:0000256|HAMAP-Rule:MF_00180}.
-!- FUNCTION: Catalyzes the conversion of GTP to 2,5-diamino-6-
ribosylamino-4(3H)-pyrimidinone 5'-phosphate (DARP), formate and
pyrophosphate. {ECO:0000256|HAMAP-Rule:MF_00179}.
-!- CATALYTIC ACTIVITY:
Reaction=D-ribulose 5-phosphate = (2S)-2-hydroxy-3-oxobutyl
phosphate + formate + H(+); Xref=Rhea:RHEA:18457,
ChEBI:CHEBI:15378, ChEBI:CHEBI:15740, ChEBI:CHEBI:58121,
ChEBI:CHEBI:58830; EC=4.1.99.12; Evidence={ECO:0000256|HAMAP-
Rule:MF_00180};
-!- CATALYTIC ACTIVITY:
Reaction=GTP + 3 H2O = 2,5-diamino-6-hydroxy-4-(5-
phosphoribosylamino)-pyrimidine + diphosphate + formate + 2
H(+); Xref=Rhea:RHEA:23704, ChEBI:CHEBI:15377,
ChEBI:CHEBI:15378, ChEBI:CHEBI:15740, ChEBI:CHEBI:33019,
ChEBI:CHEBI:37565, ChEBI:CHEBI:58614; EC=3.5.4.25;
Evidence={ECO:0000256|HAMAP-Rule:MF_00179,
ECO:0000256|SAAS:SAAS01116086};
-!- COFACTOR:
Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
Evidence={ECO:0000256|HAMAP-Rule:MF_00180};
Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
Evidence={ECO:0000256|HAMAP-Rule:MF_00180};
Note=Binds 2 divalent metal cations per subunit. Magnesium or
manganese. {ECO:0000256|HAMAP-Rule:MF_00180};
-!- COFACTOR:
Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
Evidence={ECO:0000256|HAMAP-Rule:MF_00179};
Note=Binds 1 zinc ion per subunit. {ECO:0000256|HAMAP-
Rule:MF_00179};
-!- PATHWAY: Cofactor biosynthesis; riboflavin biosynthesis; 2-
hydroxy-3-oxobutyl phosphate from D-ribulose 5-phosphate: step
1/1. {ECO:0000256|HAMAP-Rule:MF_00180}.
-!- PATHWAY: Cofactor biosynthesis; riboflavin biosynthesis; 5-amino-
6-(D-ribitylamino)uracil from GTP: step 1/4. {ECO:0000256|HAMAP-
Rule:MF_00179, ECO:0000256|SAAS:SAAS00711724}.
-!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_00180}.
-!- SIMILARITY: Belongs to the DHBP synthase family.
{ECO:0000256|HAMAP-Rule:MF_00180}.
-!- SIMILARITY: Belongs to the GTP cyclohydrolase II family.
{ECO:0000256|HAMAP-Rule:MF_00179}.
-!- SIMILARITY: In the C-terminal section; belongs to the GTP
cyclohydrolase II family. {ECO:0000256|SAAS:SAAS00789992}.
-!- SIMILARITY: In the N-terminal section; belongs to the DHBP
synthase family. {ECO:0000256|SAAS:SAAS00534513}.
-!- CAUTION: The sequence shown here is derived from an
EMBL/GenBank/DDBJ whole genome shotgun (WGS) entry which is
preliminary data. {ECO:0000313|EMBL:ENZ82853.1}.
-----------------------------------------------------------------------
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-----------------------------------------------------------------------
EMBL; APMP01000004; ENZ82853.1; -; Genomic_DNA.
RefSeq; WP_004616631.1; NZ_APMP01000004.1.
EnsemblBacteria; ENZ82853; ENZ82853; OR37_01047.
PATRIC; fig|1292034.3.peg.1032; -.
UniPathway; UPA00275; UER00399.
UniPathway; UPA00275; UER00400.
Proteomes; UP000013063; Unassembled WGS sequence.
GO; GO:0008686; F:3,4-dihydroxy-2-butanone-4-phosphate synthase activity; IEA:UniProtKB-UniRule.
GO; GO:0005525; F:GTP binding; IEA:UniProtKB-KW.
GO; GO:0003935; F:GTP cyclohydrolase II activity; IEA:UniProtKB-UniRule.
GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
GO; GO:0030145; F:manganese ion binding; IEA:UniProtKB-UniRule.
GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
GO; GO:0009231; P:riboflavin biosynthetic process; IEA:UniProtKB-UniRule.
CDD; cd00641; GTP_cyclohydro2; 1.
Gene3D; 3.40.50.10990; -; 1.
HAMAP; MF_00179; RibA; 1.
HAMAP; MF_00180; RibB; 1.
InterPro; IPR017945; DHBP_synth_RibB-like_a/b_dom.
InterPro; IPR000422; DHBP_synthase_RibB.
InterPro; IPR032677; GTP_cyclohydro_II.
InterPro; IPR000926; RibA.
InterPro; IPR036144; RibA-like_sf.
Pfam; PF00926; DHBP_synthase; 1.
Pfam; PF00925; GTP_cyclohydro2; 1.
SUPFAM; SSF142695; SSF142695; 1.
SUPFAM; SSF55821; SSF55821; 1.
TIGRFAMs; TIGR00505; ribA; 1.
TIGRFAMs; TIGR00506; ribB; 1.
3: Inferred from homology;
Complete proteome {ECO:0000313|Proteomes:UP000013063};
GTP-binding {ECO:0000256|HAMAP-Rule:MF_00179,
ECO:0000256|SAAS:SAAS00711691};
Hydrolase {ECO:0000256|HAMAP-Rule:MF_00179,
ECO:0000256|SAAS:SAAS01033620, ECO:0000313|EMBL:ENZ82853.1};
Lyase {ECO:0000256|HAMAP-Rule:MF_00180, ECO:0000313|EMBL:ENZ82853.1};
Magnesium {ECO:0000256|HAMAP-Rule:MF_00180};
Manganese {ECO:0000256|HAMAP-Rule:MF_00180};
Metal-binding {ECO:0000256|HAMAP-Rule:MF_00179,
ECO:0000256|SAAS:SAAS00037896};
Nucleotide-binding {ECO:0000256|HAMAP-Rule:MF_00179,
ECO:0000256|SAAS:SAAS00711691};
Riboflavin biosynthesis {ECO:0000256|HAMAP-Rule:MF_00179,
ECO:0000256|SAAS:SAAS00037880};
Zinc {ECO:0000256|HAMAP-Rule:MF_00179, ECO:0000256|SAAS:SAAS00711685}.
DOMAIN 203 364 GTP_cyclohydro2.
{ECO:0000259|Pfam:PF00925}.
NP_BIND 243 247 GTP. {ECO:0000256|HAMAP-Rule:MF_00179}.
NP_BIND 286 288 GTP. {ECO:0000256|HAMAP-Rule:MF_00179}.
REGION 25 26 Substrate binding. {ECO:0000256|HAMAP-
Rule:MF_00180}.
REGION 138 142 Substrate binding. {ECO:0000256|HAMAP-
Rule:MF_00180}.
ACT_SITE 320 320 Proton acceptor. {ECO:0000256|HAMAP-
Rule:MF_00179}.
ACT_SITE 322 322 Nucleophile. {ECO:0000256|HAMAP-
Rule:MF_00179}.
METAL 26 26 Magnesium or manganese 1.
{ECO:0000256|HAMAP-Rule:MF_00180}.
METAL 26 26 Magnesium or manganese 2.
{ECO:0000256|HAMAP-Rule:MF_00180}.
METAL 141 141 Magnesium or manganese 2.
{ECO:0000256|HAMAP-Rule:MF_00180}.
METAL 248 248 Zinc; catalytic. {ECO:0000256|HAMAP-
Rule:MF_00179}.
METAL 259 259 Zinc; catalytic. {ECO:0000256|HAMAP-
Rule:MF_00179}.
METAL 261 261 Zinc; catalytic. {ECO:0000256|HAMAP-
Rule:MF_00179}.
BINDING 30 30 Substrate. {ECO:0000256|HAMAP-
Rule:MF_00180}.
BINDING 162 162 Substrate. {ECO:0000256|HAMAP-
Rule:MF_00180}.
BINDING 264 264 GTP. {ECO:0000256|HAMAP-Rule:MF_00179}.
BINDING 308 308 GTP. {ECO:0000256|HAMAP-Rule:MF_00179}.
BINDING 343 343 GTP. {ECO:0000256|HAMAP-Rule:MF_00179}.
BINDING 348 348 GTP. {ECO:0000256|HAMAP-Rule:MF_00179}.
SITE 124 124 Essential for catalytic activity.
{ECO:0000256|HAMAP-Rule:MF_00180}.
SITE 162 162 Essential for catalytic activity.
{ECO:0000256|HAMAP-Rule:MF_00180}.
SEQUENCE 392 AA; 41072 MW; 6E323DC7317E89A1 CRC64;
MSRLSEALER LKAGGMIIVV DDIDRENEGD LVMAAEHVDA AAIAFMAKEG SGLICLSLEA
QAVERLNLAP MVADNRTRRG TAFTVSIEAA VGIDTGISAH DRAMTIAAAT APDATAADLV
SPGHVFPLRA APGGVLVRRG HTEASIDLVT LAGLRPAAVI CEIMNPDGAM ARGPSLDAFA
ARHGLPVVSI AELVEHRRAV TEVARANLPT EHGTFEVVAF RTQDAEHLAL IAAPRDGAAP
LVRVHSECLT GDALGSRRCD CGEQLRASLD RIGQDGGVLV YVGGHEGRGL GLANKIAAYA
LQDQGLDTVS ANHALGFVDD ARDYGAAGQI LQALGVGRVR LMTNNPRKVE AMTAAGLEVV
ERVPVLVRQT DDNAAYLTTK RDRLGHDLGH AA


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Pathways :
WP2199: Seed Development
WP2340: Thiamine (vitamin B1) biosynthesis and salvage
WP2341: vitamin B1 (thiamin) biosynthesis and salvage pathway
WP1403: AMPK signaling
WP1422: Sphingolipid Metabolism
WP1423: Ganglio Sphingolipid Metabolism
WP1424: Globo Sphingolipid Metabolism
WP1461: Photosynthetic Carbon Reduction
WP1493: Carbon assimilation C4 pathway
WP1621: Arginine and proline metabolism
WP1657: Glycerolipid metabolism
WP1708: Terpenoid backbone biosynthesis
WP2208: Cardiolipin Biosynthesis
WP2210: Oryzalexin S biosynthesis
WP2211: Geranylgeranyldiphosphate biosynthesis II (plastidic)
WP2248: anthocyanin biosynthesis
WP296: TCA Cycle - biocyc
WP626: Abscisic Acid Biosynthesis
WP668: Octadecanoid Pathway
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Related Genes :
[RIBA1 RIBBA At5g64300 MSJ1.14] Bifunctional riboflavin biosynthesis protein RIBA 1, chloroplastic (AtRIBA1) [Includes: 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12); GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II)]
[ribBA ribH DMD85_09030] Multifunctional fusion protein [Includes: Riboflavin biosynthesis protein RibBA; 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12); GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 6,7-dimethyl-8-ribityllumazine synthase (DMRL synthase) (LS) (Lumazine synthase) (EC 2.5.1.78)]
[ribB ribA COX81_01935] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribBA ribH GA0115236_158411] Multifunctional fusion protein [Includes: Riboflavin biosynthesis protein RibBA; 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12); GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 6,7-dimethyl-8-ribityllumazine synthase (DMRL synthase) (LS) (Lumazine synthase) (EC 2.5.1.78)]
[ribA ribB ECBG_03107] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribB ribA HMPREF9264_1753] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribBA ribA ribA2 Rv1415 MTCY21B4.33] Riboflavin biosynthesis protein RibBA [Includes: 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12); GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II)]
[ribB ribA ECAG_03022] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribBA ribA ribB BSF38_03802] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribBA ribA ribB AVP42_01663] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribA ribB HSIEG1_711] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribA ribB CJ228_10265 FM125_01705] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribA ribB Abci_010_005] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribA ribB ISGA_1407] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribB ribA A5882_000677] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribA ribB A3F11_01805] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribB ribA A3F42_00715] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribA ribB A3E88_01255] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribA ribB A0126_13240] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribB ribA A3F18_06450] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribA ribB HMPREF9265_2090] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribBA ribA/ribB CT_731] Riboflavin biosynthesis protein RibBA [Includes: 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12); GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II)]
[ribBA RER_30220] Riboflavin biosynthesis protein RibBA [Includes: 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12); GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II)]
[ribB ribA BLD48_09055] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribBA BcerKBAB4_3943] Riboflavin biosynthesis protein RibBA [Includes: 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12); GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II)]
[ribB ribA HMPREF0889_0759] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribBA ribA sll1894] Riboflavin biosynthesis protein RibBA [Includes: 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12); GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II)]
[ribA ribB OR37_01047] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]
[ribBA ribA aq_350] Riboflavin biosynthesis protein RibBA [Includes: 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12); GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II)]
[ribA ribB AD017_30445] Multifunctional fusion protein [Includes: GTP cyclohydrolase-2 (EC 3.5.4.25) (GTP cyclohydrolase II); 3,4-dihydroxy-2-butanone 4-phosphate synthase (DHBP synthase) (EC 4.1.99.12)]

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