ID   GLMU_PRIMG              Reviewed;          68 AA.
AC   P28017;
DT   01-AUG-1992, integrated into UniProtKB/Swiss-Prot.
DT   01-AUG-1992, sequence version 1.
DT   03-AUG-2022, entry version 84.
DE   RecName: Full=Bifunctional protein GlmU;
DE   Includes:
DE     RecName: Full=UDP-N-acetylglucosamine pyrophosphorylase;
DE              EC=2.7.7.23;
DE     AltName: Full=N-acetylglucosamine-1-phosphate uridyltransferase;
DE   Includes:
DE     RecName: Full=Glucosamine-1-phosphate N-acetyltransferase;
DE              EC=2.3.1.157;
DE   Flags: Fragment;
GN   Name=glmU; Synonyms=gcaD, tms;
OS   Priestia megaterium (Bacillus megaterium).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Priestia.
OX   NCBI_TaxID=1404;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=PV361;
RX   PubMed=1373326; DOI=10.1016/0167-4781(92)90536-9;
RA   Hudspeth D.S.S., Vary P.S.;
RT   "spoVG sequence of Bacillus megaterium and Bacillus subtilis.";
RL   Biochim. Biophys. Acta 1130:229-231(1992).
CC   -!- FUNCTION: Catalyzes the last two sequential reactions in the de novo
CC       biosynthetic pathway for UDP-N-acetylglucosamine (UDP-GlcNAc). The C-
CC       terminal domain catalyzes the transfer of acetyl group from acetyl
CC       coenzyme A to glucosamine-1-phosphate (GlcN-1-P) to produce N-
CC       acetylglucosamine-1-phosphate (GlcNAc-1-P), which is converted into
CC       UDP-GlcNAc by the transfer of uridine 5-monophosphate (from uridine 5-
CC       triphosphate), a reaction catalyzed by the N-terminal domain (By
CC       similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=acetyl-CoA + alpha-D-glucosamine 1-phosphate = CoA + H(+) + N-
CC         acetyl-alpha-D-glucosamine 1-phosphate; Xref=Rhea:RHEA:13725,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:57287, ChEBI:CHEBI:57288,
CC         ChEBI:CHEBI:57776, ChEBI:CHEBI:58516; EC=2.3.1.157;
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H(+) + N-acetyl-alpha-D-glucosamine 1-phosphate + UTP =
CC         diphosphate + UDP-N-acetyl-alpha-D-glucosamine; Xref=Rhea:RHEA:13509,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:33019, ChEBI:CHEBI:46398,
CC         ChEBI:CHEBI:57705, ChEBI:CHEBI:57776; EC=2.7.7.23;
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000250};
CC       Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000250};
CC   -!- PATHWAY: Nucleotide-sugar biosynthesis; UDP-N-acetyl-alpha-D-
CC       glucosamine biosynthesis; N-acetyl-alpha-D-glucosamine 1-phosphate from
CC       alpha-D-glucosamine 6-phosphate (route II): step 2/2.
CC   -!- PATHWAY: Nucleotide-sugar biosynthesis; UDP-N-acetyl-alpha-D-
CC       glucosamine biosynthesis; UDP-N-acetyl-alpha-D-glucosamine from N-
CC       acetyl-alpha-D-glucosamine 1-phosphate: step 1/1.
CC   -!- PATHWAY: Bacterial outer membrane biogenesis; LPS lipid A biosynthesis.
CC   -!- SUBUNIT: Homotrimer. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: In the N-terminal section; belongs to the N-
CC       acetylglucosamine-1-phosphate uridyltransferase family. {ECO:0000305}.
CC   -!- SIMILARITY: In the C-terminal section; belongs to the transferase
CC       hexapeptide repeat family. {ECO:0000305}.
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DR   EMBL; X62377; CAA44241.1; -; Genomic_DNA.
DR   PIR; S18901; S18901.
DR   AlphaFoldDB; P28017; -.
DR   SMR; P28017; -.
DR   UniPathway; UPA00113; UER00532.
DR   UniPathway; UPA00113; UER00533.
DR   UniPathway; UPA00973; -.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0019134; F:glucosamine-1-phosphate N-acetyltransferase activity; IEA:UniProtKB-EC.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0003977; F:UDP-N-acetylglucosamine diphosphorylase activity; IEA:UniProtKB-EC.
DR   GO; GO:0071555; P:cell wall organization; IEA:UniProtKB-KW.
DR   GO; GO:0009245; P:lipid A biosynthetic process; IEA:UniProtKB-UniPathway.
DR   GO; GO:0009252; P:peptidoglycan biosynthetic process; IEA:UniProtKB-KW.
DR   GO; GO:0008360; P:regulation of cell shape; IEA:UniProtKB-KW.
DR   GO; GO:0006048; P:UDP-N-acetylglucosamine biosynthetic process; IEA:UniProtKB-UniPathway.
DR   Gene3D; 3.90.550.10; -; 1.
DR   InterPro; IPR025877; MobA-like_NTP_Trfase.
DR   InterPro; IPR029044; Nucleotide-diphossugar_trans.
DR   Pfam; PF12804; NTP_transf_3; 1.
DR   SUPFAM; SSF53448; SSF53448; 1.
PE   3: Inferred from homology;
KW   Acyltransferase; Cell shape; Cell wall biogenesis/degradation; Cytoplasm;
KW   Magnesium; Metal-binding; Multifunctional enzyme; Nucleotidyltransferase;
KW   Peptidoglycan synthesis; Repeat; Transferase.
FT   CHAIN           1..>68
FT                   /note="Bifunctional protein GlmU"
FT                   /id="PRO_0000068707"
FT   BINDING         9..12
FT                   /ligand="UDP-N-acetyl-alpha-D-glucosamine"
FT                   /ligand_id="ChEBI:CHEBI:57705"
FT                   /evidence="ECO:0000250"
FT   BINDING         23
FT                   /ligand="UDP-N-acetyl-alpha-D-glucosamine"
FT                   /ligand_id="ChEBI:CHEBI:57705"
FT                   /evidence="ECO:0000250"
FT   NON_TER         68
SQ   SEQUENCE   68 AA;  7399 MW;  CD40139522E5A130 CRC64;
     MSKRYAVILA AGQGTRMKSS LYKVLHPVCG KPMVQHVIDQ LSRLDLTNLI TVVGHGAEKV
     KSHVGDKS