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NAGB_STRSV
ID   NAGB_STRSV              Reviewed;         235 AA.
AC   A3CLX4;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   20-MAR-2007, sequence version 1.
DT   03-AUG-2022, entry version 93.
DE   RecName: Full=Glucosamine-6-phosphate deaminase {ECO:0000255|HAMAP-Rule:MF_01241};
DE            EC=3.5.99.6 {ECO:0000255|HAMAP-Rule:MF_01241};
DE   AltName: Full=GlcN6P deaminase {ECO:0000255|HAMAP-Rule:MF_01241};
DE            Short=GNPDA {ECO:0000255|HAMAP-Rule:MF_01241};
DE   AltName: Full=Glucosamine-6-phosphate isomerase {ECO:0000255|HAMAP-Rule:MF_01241};
GN   Name=nagB {ECO:0000255|HAMAP-Rule:MF_01241}; OrderedLocusNames=SSA_0746;
OS   Streptococcus sanguinis (strain SK36).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Streptococcus.
OX   NCBI_TaxID=388919;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SK36;
RX   PubMed=17277061; DOI=10.1128/jb.01808-06;
RA   Xu P., Alves J.M., Kitten T., Brown A., Chen Z., Ozaki L.S., Manque P.,
RA   Ge X., Serrano M.G., Puiu D., Hendricks S., Wang Y., Chaplin M.D., Akan D.,
RA   Paik S., Peterson D.L., Macrina F.L., Buck G.A.;
RT   "Genome of the opportunistic pathogen Streptococcus sanguinis.";
RL   J. Bacteriol. 189:3166-3175(2007).
CC   -!- FUNCTION: Catalyzes the reversible isomerization-deamination of
CC       glucosamine 6-phosphate (GlcN6P) to form fructose 6-phosphate (Fru6P)
CC       and ammonium ion. {ECO:0000255|HAMAP-Rule:MF_01241}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=alpha-D-glucosamine 6-phosphate + H2O = beta-D-fructose 6-
CC         phosphate + NH4(+); Xref=Rhea:RHEA:12172, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:28938, ChEBI:CHEBI:57634, ChEBI:CHEBI:75989; EC=3.5.99.6;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01241};
CC   -!- PATHWAY: Amino-sugar metabolism; N-acetylneuraminate degradation; D-
CC       fructose 6-phosphate from N-acetylneuraminate: step 5/5.
CC       {ECO:0000255|HAMAP-Rule:MF_01241}.
CC   -!- SIMILARITY: Belongs to the glucosamine/galactosamine-6-phosphate
CC       isomerase family. NagB subfamily. {ECO:0000255|HAMAP-Rule:MF_01241}.
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DR   EMBL; CP000387; ABN44179.1; -; Genomic_DNA.
DR   RefSeq; WP_011836695.1; NC_009009.1.
DR   RefSeq; YP_001034729.1; NC_009009.1.
DR   AlphaFoldDB; A3CLX4; -.
DR   SMR; A3CLX4; -.
DR   STRING; 388919.SSA_0746; -.
DR   EnsemblBacteria; ABN44179; ABN44179; SSA_0746.
DR   KEGG; ssa:SSA_0746; -.
DR   PATRIC; fig|388919.9.peg.715; -.
DR   eggNOG; COG0363; Bacteria.
DR   HOGENOM; CLU_049611_1_0_9; -.
DR   OMA; FNEPCSS; -.
DR   OrthoDB; 1828393at2; -.
DR   BioCyc; MetaCyc:MON-13104; -.
DR   UniPathway; UPA00629; UER00684.
DR   Proteomes; UP000002148; Chromosome.
DR   GO; GO:0004342; F:glucosamine-6-phosphate deaminase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0005975; P:carbohydrate metabolic process; IEA:UniProtKB-KW.
DR   GO; GO:0006044; P:N-acetylglucosamine metabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0019262; P:N-acetylneuraminate catabolic process; IEA:UniProtKB-UniPathway.
DR   CDD; cd01399; GlcN6P_deaminase; 1.
DR   HAMAP; MF_01241; GlcN6P_deamin; 1.
DR   InterPro; IPR006148; Glc/Gal-6P_isomerase.
DR   InterPro; IPR004547; Glucosamine6P_isomerase.
DR   InterPro; IPR037171; NagB/RpiA_transferase-like.
DR   PANTHER; PTHR11280; PTHR11280; 1.
DR   Pfam; PF01182; Glucosamine_iso; 1.
DR   SUPFAM; SSF100950; SSF100950; 1.
DR   TIGRFAMs; TIGR00502; nagB; 1.
PE   3: Inferred from homology;
KW   Carbohydrate metabolism; Hydrolase; Reference proteome.
FT   CHAIN           1..235
FT                   /note="Glucosamine-6-phosphate deaminase"
FT                   /id="PRO_1000067030"
FT   ACT_SITE        62
FT                   /note="Proton acceptor; for enolization step"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT   ACT_SITE        128
FT                   /note="For ring-opening step"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT   ACT_SITE        130
FT                   /note="Proton acceptor; for ring-opening step"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT   ACT_SITE        135
FT                   /note="For ring-opening step"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
SQ   SEQUENCE   235 AA;  25668 MW;  85045B98A83B96CE CRC64;
     MKIIQVENQV EGGKVALELL KEKLAQGAKT LGLATGSSPE EFYKQIVESD LDFSEMTSVN
     LDEYVGLQEE DPQSYRYFMN QHLFNQKPFK ASFLPNGAAK DLEAEVARYN QLLTEHPADL
     QILGIGTNGH IGFNEPGTSF DSQTHLVDLT PSTIQSNARF FDKMEDVPTQ AISMGIGNIL
     NAKSIILFAY GSAKAKAIAG TVEGEVTEEL PGSALQKHPD VVIIADKEAL SLLKH
 
 
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