ID   NAGB_STAHJ              Reviewed;         242 AA.
AC   Q4L9T8;
DT   22-NOV-2005, integrated into UniProtKB/Swiss-Prot.
DT   02-AUG-2005, sequence version 1.
DT   25-MAY-2022, entry version 115.
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=SH0278;
OS   Staphylococcus haemolyticus (strain JCSC1435).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Staphylococcaceae;
OC   Staphylococcus.
OX   NCBI_TaxID=279808;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=JCSC1435;
RX   PubMed=16237012; DOI=10.1128/jb.187.21.7292-7308.2005;
RA   Takeuchi F., Watanabe S., Baba T., Yuzawa H., Ito T., Morimoto Y.,
RA   Kuroda M., Cui L., Takahashi M., Ankai A., Baba S., Fukui S., Lee J.C.,
RA   Hiramatsu K.;
RT   "Whole-genome sequencing of Staphylococcus haemolyticus uncovers the
RT   extreme plasticity of its genome and the evolution of human-colonizing
RT   staphylococcal species.";
RL   J. Bacteriol. 187:7292-7308(2005).
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; AP006716; BAE03587.1; -; Genomic_DNA.
DR   RefSeq; WP_011274607.1; NC_007168.1.
DR   AlphaFoldDB; Q4L9T8; -.
DR   SMR; Q4L9T8; -.
DR   STRING; 279808.SH0278; -.
DR   EnsemblBacteria; BAE03587; BAE03587; SH0278.
DR   GeneID; 58063498; -.
DR   KEGG; sha:SH0278; -.
DR   eggNOG; COG0363; Bacteria.
DR   HOGENOM; CLU_049611_1_1_9; -.
DR   OMA; NSYRYYM; -.
DR   OrthoDB; 1828393at2; -.
DR   UniPathway; UPA00629; UER00684.
DR   Proteomes; UP000000543; 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.
FT   CHAIN           1..242
FT                   /note="Glucosamine-6-phosphate deaminase"
FT                   /id="PRO_0000160170"
FT   ACT_SITE        67
FT                   /note="Proton acceptor; for enolization step"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT   ACT_SITE        137
FT                   /note="For ring-opening step"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT   ACT_SITE        139
FT                   /note="Proton acceptor; for ring-opening step"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT   ACT_SITE        144
FT                   /note="For ring-opening step"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
SQ   SEQUENCE   242 AA;  27236 MW;  5E68E50E3CBDFB26 CRC64;
     MKITNLVDKK LASDYVAIEL LKLIKDKPDA ILGLATGGTM TDVYPRFSEL LSANHVDLAN
     VQTFNLDEYV GLEPEHAQSY HTYMHQLLFD HNASWNADNI HIPQGHVDDL EREARRYENQ
     LKQIGQPDIQ LLGIGENGHI GFNEPGTSFE SETRVVDLTE STINANSVHF DHIDDVPKQA
     VSMGLNSIMR AKRIILLAFG ERKRDAIHQL LNGETNESLP ASILHQHPNV EIIVDDTIFN
     RL