ID   RBSD_BACCR              Reviewed;         131 AA.
AC   Q81HW9;
DT   02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   03-AUG-2022, entry version 95.
DE   RecName: Full=D-ribose pyranase {ECO:0000255|HAMAP-Rule:MF_01661};
DE            EC=5.4.99.62 {ECO:0000255|HAMAP-Rule:MF_01661};
GN   Name=rbsD {ECO:0000255|HAMAP-Rule:MF_01661}; OrderedLocusNames=BC_0661;
OS   Bacillus cereus (strain ATCC 14579 / DSM 31 / CCUG 7414 / JCM 2152 / NBRC
OS   15305 / NCIMB 9373 / NCTC 2599 / NRRL B-3711).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Bacillus;
OC   Bacillus cereus group.
OX   NCBI_TaxID=226900;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 14579 / DSM 31 / CCUG 7414 / JCM 2152 / NBRC 15305 / NCIMB 9373
RC   / NCTC 2599 / NRRL B-3711;
RX   PubMed=12721630; DOI=10.1038/nature01582;
RA   Ivanova N., Sorokin A., Anderson I., Galleron N., Candelon B., Kapatral V.,
RA   Bhattacharyya A., Reznik G., Mikhailova N., Lapidus A., Chu L., Mazur M.,
RA   Goltsman E., Larsen N., D'Souza M., Walunas T., Grechkin Y., Pusch G.,
RA   Haselkorn R., Fonstein M., Ehrlich S.D., Overbeek R., Kyrpides N.C.;
RT   "Genome sequence of Bacillus cereus and comparative analysis with Bacillus
RT   anthracis.";
RL   Nature 423:87-91(2003).
CC   -!- FUNCTION: Catalyzes the interconversion of beta-pyran and beta-furan
CC       forms of D-ribose. {ECO:0000255|HAMAP-Rule:MF_01661}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=beta-D-ribopyranose = beta-D-ribofuranose;
CC         Xref=Rhea:RHEA:25432, ChEBI:CHEBI:27476, ChEBI:CHEBI:47002;
CC         EC=5.4.99.62; Evidence={ECO:0000255|HAMAP-Rule:MF_01661};
CC   -!- PATHWAY: Carbohydrate metabolism; D-ribose degradation; D-ribose 5-
CC       phosphate from beta-D-ribopyranose: step 1/2. {ECO:0000255|HAMAP-
CC       Rule:MF_01661}.
CC   -!- SUBUNIT: Homodecamer. {ECO:0000255|HAMAP-Rule:MF_01661}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01661}.
CC   -!- SIMILARITY: Belongs to the RbsD / FucU family. RbsD subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01661}.
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DR   EMBL; AE016877; AAP07676.1; -; Genomic_DNA.
DR   RefSeq; NP_830475.1; NC_004722.1.
DR   RefSeq; WP_000716152.1; NZ_CP034551.1.
DR   AlphaFoldDB; Q81HW9; -.
DR   SMR; Q81HW9; -.
DR   STRING; 226900.BC_0661; -.
DR   EnsemblBacteria; AAP07676; AAP07676; BC_0661.
DR   KEGG; bce:BC0661; -.
DR   PATRIC; fig|226900.8.peg.621; -.
DR   HOGENOM; CLU_135498_0_0_9; -.
DR   OMA; IIRTGEC; -.
DR   UniPathway; UPA00916; UER00888.
DR   Proteomes; UP000001417; Chromosome.
DR   GO; GO:0005829; C:cytosol; IBA:GO_Central.
DR   GO; GO:0062193; F:D-ribose pyranase activity; IEA:UniProtKB-EC.
DR   GO; GO:0016872; F:intramolecular lyase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0016866; F:intramolecular transferase activity; IBA:GO_Central.
DR   GO; GO:0048029; F:monosaccharide binding; IEA:InterPro.
DR   GO; GO:0019303; P:D-ribose catabolic process; IBA:GO_Central.
DR   Gene3D; 3.40.1650.10; -; 1.
DR   HAMAP; MF_01661; D_rib_pyranase; 1.
DR   InterPro; IPR023064; D-ribose_pyranase.
DR   InterPro; IPR023750; RbsD-like_sf.
DR   InterPro; IPR007721; RbsD_FucU.
DR   PANTHER; PTHR37831; PTHR37831; 1.
DR   Pfam; PF05025; RbsD_FucU; 1.
DR   SUPFAM; SSF102546; SSF102546; 1.
PE   3: Inferred from homology;
KW   Carbohydrate metabolism; Cytoplasm; Isomerase; Reference proteome.
FT   CHAIN           1..131
FT                   /note="D-ribose pyranase"
FT                   /id="PRO_0000346172"
FT   ACT_SITE        20
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01661"
FT   BINDING         28
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01661"
FT   BINDING         98
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01661"
FT   BINDING         120..122
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01661"
SQ   SEQUENCE   131 AA;  14297 MW;  864EFF6C0FAA66E3 CRC64;
     MKKHGVLNSE IAAVLASLGH TDTVVIADCG LPIPDGVKRI DLAVEIGKPS FLEVLQVVAD
     DMAIEKVTLA EEVIINNAEV NKEIERKLIE PAFEYVSHEQ FKEHTKKAKA IIRTGEATPY
     ANVILHAGVI F