guanosine 2'-phosphate + H(+) => 2',3'-cyclophospho-GMP + H2O
guanosine 2'-phosphate + h(+) => 2',3'-cyclophospho-gmp + h2o
guanosine 2'-phosphate + H(+) => 2',3'-cyclophospho-GMP + H2O
guanosine 2'-phosphate + h(+) => 2',3'-cyclophospho-gmp + h2o