NAGB_HAEI8
ID NAGB_HAEI8 Reviewed; 270 AA.
AC Q4QP46;
DT 05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT 19-JUL-2005, sequence version 1.
DT 03-AUG-2022, entry version 88.
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=NTHI0227;
OS Haemophilus influenzae (strain 86-028NP).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC Pasteurellaceae; Haemophilus.
OX NCBI_TaxID=281310;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=86-028NP;
RX PubMed=15968074; DOI=10.1128/jb.187.13.4627-4636.2005;
RA Harrison A., Dyer D.W., Gillaspy A., Ray W.C., Mungur R., Carson M.B.,
RA Zhong H., Gipson J., Gipson M., Johnson L.S., Lewis L., Bakaletz L.O.,
RA Munson R.S. Jr.;
RT "Genomic sequence of an otitis media isolate of nontypeable Haemophilus
RT influenzae: comparative study with H. influenzae serotype d, strain KW20.";
RL J. Bacteriol. 187:4627-4636(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 -!- ACTIVITY REGULATION: Allosterically activated by N-acetylglucosamine 6-
CC phosphate (GlcNAc6P). {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 -!- SUBUNIT: Homohexamer. {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; CP000057; AAX87201.1; -; Genomic_DNA.
DR RefSeq; WP_011271900.1; NC_007146.2.
DR PDB; 7LQN; X-ray; 3.00 A; A/B/C/D/E/F/G/H/I/J/K/L=1-270.
DR PDBsum; 7LQN; -.
DR AlphaFoldDB; Q4QP46; -.
DR SMR; Q4QP46; -.
DR EnsemblBacteria; AAX87201; AAX87201; NTHI0227.
DR KEGG; hit:NTHI0227; -.
DR HOGENOM; CLU_049611_0_1_6; -.
DR OMA; FNEPCSS; -.
DR OrthoDB; 1828393at2; -.
DR UniPathway; UPA00629; UER00684.
DR Proteomes; UP000002525; 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 1: Evidence at protein level;
KW 3D-structure; Allosteric enzyme; Carbohydrate metabolism; Hydrolase.
FT CHAIN 1..270
FT /note="Glucosamine-6-phosphate deaminase"
FT /id="PRO_1000066985"
FT ACT_SITE 72
FT /note="Proton acceptor; for enolization step"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT ACT_SITE 141
FT /note="For ring-opening step"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT ACT_SITE 143
FT /note="Proton acceptor; for ring-opening step"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT ACT_SITE 148
FT /note="For ring-opening step"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT SITE 151
FT /note="Part of the allosteric site"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT SITE 158
FT /note="Part of the allosteric site"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT SITE 160
FT /note="Part of the allosteric site"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT SITE 161
FT /note="Part of the allosteric site"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT SITE 254
FT /note="Part of the allosteric site"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01241"
FT STRAND 1..5
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 9..27
FT /evidence="ECO:0007829|PDB:7LQN"
FT STRAND 31..33
FT /evidence="ECO:0007829|PDB:7LQN"
FT STRAND 35..39
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 43..57
FT /evidence="ECO:0007829|PDB:7LQN"
FT STRAND 66..77
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 85..92
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 94..96
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 101..103
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 114..128
FT /evidence="ECO:0007829|PDB:7LQN"
FT STRAND 132..137
FT /evidence="ECO:0007829|PDB:7LQN"
FT STRAND 157..161
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 164..170
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 171..173
FT /evidence="ECO:0007829|PDB:7LQN"
FT TURN 174..176
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 178..180
FT /evidence="ECO:0007829|PDB:7LQN"
FT STRAND 183..187
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 190..194
FT /evidence="ECO:0007829|PDB:7LQN"
FT STRAND 199..203
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 206..208
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 209..216
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 225..231
FT /evidence="ECO:0007829|PDB:7LQN"
FT STRAND 235..239
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 242..244
FT /evidence="ECO:0007829|PDB:7LQN"
FT HELIX 249..258
FT /evidence="ECO:0007829|PDB:7LQN"
SQ SEQUENCE 270 AA; 30484 MW; 9E90EA1951BA6384 CRC64;
MRFIPLQTEQ QVSCWAAQHI INRINDFKPT AERPFVLGLP TGGTPLKTYQ ELIRLYQAGK
VSFKHVVTFN MDEYVALPEE HPESYHSFMY NNFFNHIDIL PENINILNGN TDDHNAECHR
YEEKIKSYGK IHLFMGGVGV DGHIAFNEPA SSLSSRTRIK TLTQDTLIAN SRFFNNDVTQ
VPKYALTIGV GTLLDAEEVM ILATGHQKAL AVQAAVEGSI NHLWTVSALQ MHRHFVLVCD
EAAQQELKVK TVKYFTELEG SVAGTDYQDK
