A0A091CB75 · A0A091CB75_STREI
- ProteinBifunctional protein GlmU
- GeneglmU
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids460 (go to sequence)
- Protein existenceInferred from homology
- Annotation score4/5
Function
function
Catalyzes the last two sequential reactions in the de novo biosynthetic pathway for UDP-N-acetylglucosamine (UDP-GlcNAc). The C-terminal domain catalyzes the transfer of acetyl group from acetyl coenzyme A to glucosamine-1-phosphate (GlcN-1-P) to produce N-acetylglucosamine-1-phosphate (GlcNAc-1-P), which is converted into UDP-GlcNAc by the transfer of uridine 5-monophosphate (from uridine 5-triphosphate), a reaction catalyzed by the N-terminal domain.
Catalytic activity
- N-acetyl-alpha-D-glucosamine 1-phosphate + UTP + H+ = UDP-N-acetyl-alpha-D-glucosamine + diphosphate
Cofactor
Note: Binds 1 Mg2+ ion per subunit.
Pathway
Bacterial outer membrane biogenesis; LPS lipid A biosynthesis.
Nucleotide-sugar biosynthesis; UDP-N-acetyl-alpha-D-glucosamine biosynthesis; N-acetyl-alpha-D-glucosamine 1-phosphate from alpha-D-glucosamine 6-phosphate (route II): step 2/2.
Nucleotide-sugar biosynthesis; UDP-N-acetyl-alpha-D-glucosamine biosynthesis; UDP-N-acetyl-alpha-D-glucosamine from N-acetyl-alpha-D-glucosamine 1-phosphate: step 1/1.
Features
Showing features for binding site, active site.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Binding site | 8-11 | UDP-N-acetyl-alpha-D-glucosamine (UniProtKB | ChEBI) | ||||
Sequence: LAAG | ||||||
Binding site | 22 | UDP-N-acetyl-alpha-D-glucosamine (UniProtKB | ChEBI) | ||||
Sequence: K | ||||||
Binding site | 72 | UDP-N-acetyl-alpha-D-glucosamine (UniProtKB | ChEBI) | ||||
Sequence: Q | ||||||
Binding site | 77-78 | UDP-N-acetyl-alpha-D-glucosamine (UniProtKB | ChEBI) | ||||
Sequence: GT | ||||||
Binding site | 102 | Mg2+ (UniProtKB | ChEBI) | ||||
Sequence: D | ||||||
Binding site | 139 | UDP-N-acetyl-alpha-D-glucosamine (UniProtKB | ChEBI) | ||||
Sequence: G | ||||||
Binding site | 154 | UDP-N-acetyl-alpha-D-glucosamine (UniProtKB | ChEBI) | ||||
Sequence: E | ||||||
Binding site | 169 | UDP-N-acetyl-alpha-D-glucosamine (UniProtKB | ChEBI) | ||||
Sequence: N | ||||||
Binding site | 227 | Mg2+ (UniProtKB | ChEBI) | ||||
Sequence: N | ||||||
Binding site | 227 | UDP-N-acetyl-alpha-D-glucosamine (UniProtKB | ChEBI) | ||||
Sequence: N | ||||||
Binding site | 332 | UDP-N-acetyl-alpha-D-glucosamine (UniProtKB | ChEBI) | ||||
Sequence: R | ||||||
Binding site | 350 | UDP-N-acetyl-alpha-D-glucosamine (UniProtKB | ChEBI) | ||||
Sequence: K | ||||||
Active site | 362 | Proton acceptor | ||||
Sequence: H | ||||||
Binding site | 365 | UDP-N-acetyl-alpha-D-glucosamine (UniProtKB | ChEBI) | ||||
Sequence: Y | ||||||
Binding site | 376 | UDP-N-acetyl-alpha-D-glucosamine (UniProtKB | ChEBI) | ||||
Sequence: N | ||||||
Binding site | 379 | acetyl-CoA (UniProtKB | ChEBI) | ||||
Sequence: A | ||||||
Binding site | 385-386 | acetyl-CoA (UniProtKB | ChEBI) | ||||
Sequence: NY | ||||||
Binding site | 404 | acetyl-CoA (UniProtKB | ChEBI) | ||||
Sequence: S | ||||||
Binding site | 422 | acetyl-CoA (UniProtKB | ChEBI) | ||||
Sequence: A | ||||||
Binding site | 439 | acetyl-CoA (UniProtKB | ChEBI) | ||||
Sequence: R |
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cytoplasm | |
Molecular Function | glucosamine-1-phosphate N-acetyltransferase activity | |
Molecular Function | magnesium ion binding | |
Molecular Function | UDP-N-acetylglucosamine diphosphorylase activity | |
Biological Process | cell morphogenesis | |
Biological Process | cell wall organization | |
Biological Process | lipid A biosynthetic process | |
Biological Process | peptidoglycan biosynthetic process | |
Biological Process | regulation of cell shape | |
Biological Process | UDP-N-acetylglucosamine biosynthetic process |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameBifunctional protein GlmU
Including 2 domains:
- Recommended nameUDP-N-acetylglucosamine pyrophosphorylase
- EC number
- Alternative names
- Recommended nameGlucosamine-1-phosphate N-acetyltransferase
- EC number
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageBacteria > Bacillota > Bacilli > Lactobacillales > Streptococcaceae > Streptococcus
Accessions
- Primary accessionA0A091CB75
Proteomes
Subcellular Location
Interaction
Subunit
Homotrimer.
Structure
Family & Domains
Features
Showing features for region, domain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Region | 1-229 | Pyrophosphorylase | ||||
Sequence: MSNYAIILAAGKGTRMKSDLPKVLHKVSGITMLEHVFRAVSALNPEKNVTVIGHKAEMVREVLAGKSEFVMQTEQLGTGHAVMMAEDELAGLEGQTLVIAGDTPLITGESLKELIEFHVSHKNVATILTATAENPFGYGRIIRNENGEVLKIVEQKDASEFERQVKEINTGTYVFDNKRLFEALKNINTNNAQGEYYLTDVISIFRNAGEKVGAYVLHDFDESLGVNDR | ||||||
Domain | 5-219 | Nucleotidyl transferase | ||||
Sequence: AIILAAGKGTRMKSDLPKVLHKVSGITMLEHVFRAVSALNPEKNVTVIGHKAEMVREVLAGKSEFVMQTEQLGTGHAVMMAEDELAGLEGQTLVIAGDTPLITGESLKELIEFHVSHKNVATILTATAENPFGYGRIIRNENGEVLKIVEQKDASEFERQVKEINTGTYVFDNKRLFEALKNINTNNAQGEYYLTDVISIFRNAGEKVGAYVLHD | ||||||
Region | 230-250 | Linker | ||||
Sequence: VALATAEDIMRRRINKKHMVN | ||||||
Region | 251-460 | N-acetyltransferase | ||||
Sequence: GVTFQNPAATYIDVDVEIAPDVMIEANVTLKGNTKVGAGSVLTNGTYLVDSTIGENVVITNSMIEKSVVKDGVTIGPFAHVRPDSTLEEKVHVGNFVEVKSSTVGKGTKAGHLTYIGNTTTGHDVNFGAGTIIANYDGQHKFNTTIGNNVFVGSNSTIISPVTLGDNALTAAGSTIYQDVEKDALAIGRGRQVNKAGYALNKPHHPNNKK |
Sequence similarities
In the C-terminal section; belongs to the transferase hexapeptide repeat family.
In the N-terminal section; belongs to the N-acetylglucosamine-1-phosphate uridyltransferase family.
Keywords
- Domain
Family and domain databases
Sequence
- Sequence statusComplete
- Length460
- Mass (Da)49,706
- Last updated2014-11-26 v1
- ChecksumC654F47577D0EF38