A change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a cold stimulus, a temperature stimulus below the optimal temperature for that organism.

Catalysis of the reaction: sphinganine + NADP+ = 3-dehydrosphinganine + NADPH + H+.

Catalysis of the reaction: a 3-oxo-5-beta-steroid + acceptor = a 3-oxo-D4-steroid + reduced acceptor.

The formation from simpler components of a cyclic nucleotide, a nucleotide in which the phosphate group is in diester linkage to two positions on the sugar residue.

The breakdown into simpler components of a ribonucleoside diphosphate, a glycosamine consisting of a base linked to a ribose sugar esterified with diphosphate on its glycose moiety.

The chemical reactions involving pyrimidine ribonucleoside diphosphate, a glycosamine consisting of a pyrimidine base linked to a ribose sugar esterified with diphosphate on its glycose moiety.

The breakdown into simpler components of pyrimidine ribonucleoside diphosphate, a glycosamine consisting of a pyrimidine base linked to a ribose sugar esterified with diphosphate on its glycose moiety.

The chemical reactions involving pyrimidine deoxynucleoside diphosphate, a glycosamine consisting of a pyrimidine base linked to a deoxyribose sugar esterified with diphosphate on its glycose moiety.

The formation from simpler components of pyrimidine deoxyribonucleoside diphosphate, a glycosamine consisting of a pyrimidine base linked to a deoxyribose sugar esterified with diphosphate on its glycose moiety.

guanosine cyclic 3',5'-phosphate phosphodiesterase activity

Catalysis of the reaction: guanosine 3',5'-cyclic phosphate + H2O = guanosine 5'-phosphate.

The chemical reactions involving a ribonucleoside triphosphate, a glycosamine consisting of a base linked to a ribose sugar esterified with triphosphate on its glycose moiety.

The chemical reactions involving a ribonucleoside monophosphate, a glycosamine consisting of a base linked to a ribose sugar esterified with phosphate on its glycose moiety.