CATH Classification
| Level | CATH Code | Description | 
|---|---|---|
 
	 | 
    3 | Alpha Beta | 
 
	 | 
    3.90 | Alpha-Beta Complex | 
 
	 | 
    3.90.870 | DHBP synthase | 
 
	 | 
    3.90.870.10 | DHBP synthase | 
Domain Context
CATH Clusters
| Superfamily | DHBP synthase | 
| Functional Family | 3,4-dihydroxy-2-butanone 4-phosphate synthase | 
Enzyme Information
| 4.1.99.12 | 
							 3,4-dihydroxy-2-butanone-4-phosphate synthase. 
							based on mapping to UniProt Q9KKP2 		
							D-ribulose 5-phosphate = formate + L-3,4-dihydroxybutan-2-one 4-phosphate. 
							-!- The reaction involves an intramolecular skeletal rearrangement, with the bonds in D-ribulose 5-phosphate that connect C-3 and C-5 to C-4 being broken, C-4 being removed as formate and reconnection of C-3 and C-5. -!- The phosphorylated four-carbon product (L-3,4-dihydroxybutan-2-one 4-phosphate) is an intermediate in the biosynthesis of riboflavin. 
						 | 
					
UniProtKB Entries (1)
| Q9KKP2 | 
						 RIBB_VIBCH 
						Vibrio cholerae O1 biovar El Tor str. N16961 
						3,4-dihydroxy-2-butanone 4-phosphate synthase 
					 | 
				
PDB Structure
| PDB | 4P77 | 
| External Links | |
| Method | X-RAY DIFFRACTION | 
| Organism | |
| Primary Citation | 
					 Structural Basis for Competitive Inhibition of 3,4-Dihydroxy-2-butanone-4-phosphate Synthase from Vibrio cholerae. 
					    
					    J.Biol.Chem. 
					    
					 | 
			
