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NAGB_HALOH
ID   NAGB_HALOH              Reviewed;         241 AA.
AC   B8D185;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   03-MAR-2009, sequence version 1.
DT   03-AUG-2022, entry version 69.
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=Hore_22920;
OS   Halothermothrix orenii (strain H 168 / OCM 544 / DSM 9562).
OC   Bacteria; Firmicutes; Clostridia; Halanaerobiales; Halanaerobiaceae;
OC   Halothermothrix.
OX   NCBI_TaxID=373903;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=H 168 / OCM 544 / DSM 9562;
RX   PubMed=19145256; DOI=10.1371/journal.pone.0004192;
RA   Mavromatis K., Ivanova N., Anderson I., Lykidis A., Hooper S.D., Sun H.,
RA   Kunin V., Lapidus A., Hugenholtz P., Patel B., Kyrpides N.C.;
RT   "Genome analysis of the anaerobic thermohalophilic bacterium
RT   Halothermothrix orenii.";
RL   PLoS ONE 4:E4192-E4192(2009).
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; CP001098; ACL71037.1; -; Genomic_DNA.
DR   RefSeq; WP_015924005.1; NC_011899.1.
DR   AlphaFoldDB; B8D185; -.
DR   SMR; B8D185; -.
DR   STRING; 373903.Hore_22920; -.
DR   EnsemblBacteria; ACL71037; ACL71037; Hore_22920.
DR   KEGG; hor:Hore_22920; -.
DR   eggNOG; COG0363; Bacteria.
DR   HOGENOM; CLU_049611_0_1_9; -.
DR   OMA; FNEPCSS; -.
DR   OrthoDB; 1828393at2; -.
DR   UniPathway; UPA00629; UER00684.
DR   Proteomes; UP000000719; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProt.
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; IPR018321; Glucosamine6P_isomerase_CS.
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.
DR   PROSITE; PS01161; GLC_GALNAC_ISOMERASE; 1.
PE   3: Inferred from homology;
KW   Carbohydrate metabolism; Hydrolase; Reference proteome.
FT   CHAIN           1..241
FT                   /note="Glucosamine-6-phosphate deaminase"
FT                   /id="PRO_1000165021"
FT   ACT_SITE        67
FT                   /note="Proton acceptor; for enolization step"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT   ACT_SITE        136
FT                   /note="For ring-opening step"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT   ACT_SITE        138
FT                   /note="Proton acceptor; for ring-opening step"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT   ACT_SITE        143
FT                   /note="For ring-opening step"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
SQ   SEQUENCE   241 AA;  26894 MW;  04DD7781EDE232C0 CRC64;
     MRVLIEENYR EMSKKAALLV ASQVILKPDS VLGLATGSTP IGMYQELAEM YKEGEIDFSE
     VTTFNLDEYY NLPPEAPQSY HYYMKENFFK HVNIHPARTH IPDGMAGDVE AECQDYEEKI
     RRSGGIDLQI LGIGPNGHIG FNEPDERLNV TTHLVDLTEE TIQANSRFFD SPDDVPRKAI
     SVGMATILKA RRIILLASGR NKARAIKETV SGYVSTKVPA SLLQTHPEVT LIIDKEAASL
     L
 
 
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