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Protein

Riboflavin biosynthesis protein RibBA

Gene

ribBA

Organism
Acidaminococcus fermentans (strain ATCC 25085 / DSM 20731 / VR4)
Status
Unreviewed-Annotation score: -Protein inferred from homologyi

Functioni

Catalyzes the conversion of D-ribulose 5-phosphate to formate and 3,4-dihydroxy-2-butanone 4-phosphate.UniRule annotationSAAS annotation
Catalyzes the conversion of GTP to 2,5-diamino-6-ribosylamino-4(3H)-pyrimidinone 5'-phosphate (DARP), formate and pyrophosphate.UniRule annotation

Catalytic activityi

D-ribulose 5-phosphate = formate + L-3,4-dihydroxybutan-2-one 4-phosphate.UniRule annotation
GTP + 3 H2O = formate + 2,5-diamino-6-hydroxy-4-(5-phospho-D-ribosylamino)pyrimidine + diphosphate.UniRule annotationSAAS annotation

Cofactori

Mg2+UniRule annotation, Mn2+UniRule annotationNote: Binds 2 divalent metal cations per subunit. Magnesium or manganese.UniRule annotation

Pathwayi: riboflavin biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes 2-hydroxy-3-oxobutyl phosphate from D-ribulose 5-phosphate.UniRule annotation
Proteins known to be involved in this subpathway in this organism are:
  1. Riboflavin biosynthesis protein RibBA (ribBA)
This subpathway is part of the pathway riboflavin biosynthesis, which is itself part of Cofactor biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes 2-hydroxy-3-oxobutyl phosphate from D-ribulose 5-phosphate, the pathway riboflavin biosynthesis and in Cofactor biosynthesis.

Pathwayi: riboflavin biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes 5-amino-6-(D-ribitylamino)uracil from GTP.SAAS annotation
Proteins known to be involved in the 4 steps of the subpathway in this organism are:
  1. Riboflavin biosynthesis protein RibBA (ribBA)
  2. Riboflavin biosynthesis protein RibD (Acfer_0353)
  3. Riboflavin biosynthesis protein RibD (Acfer_0353)
  4. no protein annotated in this organism
This subpathway is part of the pathway riboflavin biosynthesis, which is itself part of Cofactor biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes 5-amino-6-(D-ribitylamino)uracil from GTP, the pathway riboflavin biosynthesis and in Cofactor biosynthesis.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi32Magnesium or manganese 1UniRule annotation1
Metal bindingi32Magnesium or manganese 2UniRule annotation1
Binding sitei36D-ribulose 5-phosphateUniRule annotation1
Sitei129Essential for DHBP synthase activityUniRule annotation1
Metal bindingi146Magnesium or manganese 2UniRule annotation1
Binding sitei167D-ribulose 5-phosphateUniRule annotation1
Sitei167Essential for DHBP synthase activityUniRule annotation1
Metal bindingi260Zinc; catalyticUniRule annotation1
Metal bindingi271Zinc; catalyticUniRule annotation1
Metal bindingi273Zinc; catalyticUniRule annotation1
Binding sitei276GTPUniRule annotation1
Binding sitei320GTPUniRule annotation1
Active sitei332Proton acceptor; for GTP cyclohydrolase activityUniRule annotation1
Active sitei334Nucleophile; for GTP cyclohydrolase activityUniRule annotation1
Binding sitei355GTPUniRule annotation1
Binding sitei360GTPUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi255 – 259GTPUniRule annotation5
Nucleotide bindingi298 – 300GTPUniRule annotation3

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionHydrolaseUniRule annotationSAAS annotation, LyaseUniRule annotation, Multifunctional enzymeUniRule annotation
Biological processRiboflavin biosynthesisUniRule annotationSAAS annotation
LigandGTP-bindingUniRule annotationSAAS annotation, MagnesiumUniRule annotation, ManganeseUniRule annotation, Metal-bindingUniRule annotationSAAS annotation, Nucleotide-binding, ZincUniRule annotationSAAS annotation

Enzyme and pathway databases

BioCyciAFER591001:G1GH7-375-MONOMER
UniPathwayiUPA00275; UER00399
UPA00275; UER00400

Names & Taxonomyi

Protein namesi
Recommended name:
Riboflavin biosynthesis protein RibBAUniRule annotation
Including the following 2 domains:
GTP cyclohydrolase-2UniRule annotation (EC:3.5.4.25UniRule annotation)
Alternative name(s):
GTP cyclohydrolase IIUniRule annotation
3,4-dihydroxy-2-butanone 4-phosphate synthaseUniRule annotation (EC:4.1.99.12UniRule annotation)
Short name:
DHBP synthaseUniRule annotation
Gene namesi
Name:ribBAUniRule annotation
Ordered Locus Names:Acfer_0355Imported
OrganismiAcidaminococcus fermentans (strain ATCC 25085 / DSM 20731 / VR4)Imported
Taxonomic identifieri591001 [NCBI]
Taxonomic lineageiBacteriaFirmicutesNegativicutesAcidaminococcalesAcidaminococcaceaeAcidaminococcus
Proteomesi
  • UP000001902 Componenti: Chromosome

Interactioni

Protein-protein interaction databases

STRINGi591001.Acfer_0355

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini211 – 376GTP_cyclohydro2InterPro annotationAdd BLAST166

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni1 – 204DHBP synthaseUniRule annotationAdd BLAST204
Regioni31 – 32D-ribulose 5-phosphate bindingUniRule annotation2
Regioni143 – 147D-ribulose 5-phosphate bindingUniRule annotation5
Regioni205 – 408GTP cyclohydrolase IIUniRule annotationAdd BLAST204

Sequence similaritiesi

In the C-terminal section; belongs to the GTP cyclohydrolase II family.UniRule annotationSAAS annotation
In the N-terminal section; belongs to the DHBP synthase family.UniRule annotationSAAS annotation

Phylogenomic databases

eggNOGiENOG4105C66 Bacteria
COG0108 LUCA
COG0807 LUCA
HOGENOMiHOG000115440
KOiK14652
OMAiGCTTGIS
OrthoDBiPOG091H008U

Family and domain databases

CDDicd00641 GTP_cyclohydro2, 1 hit
Gene3Di3.40.50.10990, 1 hit
HAMAPiMF_00179 RibA, 1 hit
MF_00180 RibB, 1 hit
MF_01283 RibBA, 1 hit
InterProiView protein in InterPro
IPR017945 DHBP_synth_RibB-like_a/b_dom
IPR000422 DHBP_synthase_RibB
IPR032677 GTP_cyclohydro_II
IPR000926 RibA
IPR036144 RibA-like_sf
IPR016299 Riboflavin_synth_RibBA
PfamiView protein in Pfam
PF00926 DHBP_synthase, 1 hit
PF00925 GTP_cyclohydro2, 1 hit
SUPFAMiSSF142695 SSF142695, 1 hit
SSF55821 SSF55821, 1 hit
TIGRFAMsiTIGR00505 ribA, 1 hit
TIGR00506 ribB, 1 hit

Sequencei

Sequence statusi: Complete.

D2RNY5-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MDKKFQFAPI EQAIEDIRAG KMVLVTDDPD RENEGDLIMS AEYVTPDDIN
60 70 80 90 100
FMATHAKGLI CMPCDGAILD RLQMEPMVAN NTDNHETAFT VSIDHKDTTT
110 120 130 140 150
GISAVERAYT IKKCTDESAK PEDFRRPGHV FPLRSREGGV LRRTGHTETT
160 170 180 190 200
TDLCRLAGLK PVGICCEIMS ADGTMARTPE LIEFARKFNL TFITVADLIA
210 220 230 240 250
YRKKNEKMVH RIANVALPSK YGTFRAIGYE NDLDDKCHVA IIKGDVAGKK
260 270 280 290 300
DVLVRVHSEC LTGDALGSLR CDCGDQLATS LKMIEKEGCG VVLYMQQEGR
310 320 330 340 350
GIGLANKLRA YELQDQGLDT VDANVKLGFK PDMRDYGIGA QILADLGLTS
360 370 380 390 400
IRLMTNNPAK RAGLSGYGIT ITETVPIIMK DNCYNHRYMV TKQVRMGHEL

HEDVEDAK
Length:408
Mass (Da):45,199
Last modified:March 2, 2010 - v1
Checksum:iE9C03148F8FE9109
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP001859 Genomic DNA Translation: ADB46761.1
RefSeqiWP_012937751.1, NC_013740.1

Genome annotation databases

EnsemblBacteriaiADB46761; ADB46761; Acfer_0355
KEGGiafn:Acfer_0355

Similar proteinsi

Entry informationi

Entry nameiD2RNY5_ACIFV
AccessioniPrimary (citable) accession number: D2RNY5
Entry historyiIntegrated into UniProtKB/TrEMBL: March 2, 2010
Last sequence update: March 2, 2010
Last modified: May 23, 2018
This is version 68 of the entry and version 1 of the sequence. See complete history.
Entry statusiUnreviewed (UniProtKB/TrEMBL)

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteomeImported

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