4qne is a 2 chain structure with sequence from Vibrio cholerae O1 biovar El Tor str. N16961. This structure supersedes the now removed PDB entry 4hlv. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Q9KTW3_VIBCH Catalyzes the conversion of inosine 5'-phosphate (IMP) to xanthosine 5'-phosphate (XMP), the first committed and rate-limiting step in the de novo synthesis of guanine nucleotides, and therefore plays an important role in the regulation of cell growth (By similarity).[HAMAP-Rule:MF_01964]