Biology:7-cyano-7-deazaguanine synthase

From HandWiki
Short description: Class of enzymes
7-Cyano-7-deazaguanine synthase
Identifiers
EC number6.3.4.20
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

7-cyano-7-deazaguanine synthase (EC 6.3.4.20, preQ0 synthase, 7-cyano-7-carbaguanine synthase, queC (gene)) is an enzyme with systematic name 7-carboxy-7-carbaguanine:ammonia ligase (ADP-forming).[1][2] This enzyme catalyses the following chemical reaction

7-carboxy-7-carbaguanine + NH3 + ATP [math]\displaystyle{ \rightleftharpoons }[/math] 7-cyano-7-carbaguanine + ADP + phosphate + H2O

This enzyme binds Zn2+.

References

  1. "The deazapurine biosynthetic pathway revealed: in vitro enzymatic synthesis of PreQ(0) from guanosine 5'-triphosphate in four steps". Biochemistry 48 (18): 3847–52. May 2009. doi:10.1021/bi900400e. PMID 19354300. 
  2. "Crystal structure of QueC from Bacillus subtilis: an enzyme involved in preQ1 biosynthesis". Proteins 72 (3): 1084–8. August 2008. doi:10.1002/prot.22098. PMID 18491386. 

External links