3IBJ

X-ray structure of PDE2A


ChainDomainClassArchitectureTopologyHomology
A3.30.450.40 Alpha Beta 2-Layer Sandwich Beta-Lactamase GAF domain
A3.30.450.40 Alpha Beta 2-Layer Sandwich Beta-Lactamase GAF domain
A1.10.1300.10 Mainly Alpha Orthogonal Bundle Catalytic domain of cyclic nucleotide phosphodiesterase 4b2b 3'5'-cyclic nucleotide phosphodiesterase, catalytic domain
B3.30.450.40 Alpha Beta 2-Layer Sandwich Beta-Lactamase GAF domain
B3.30.450.40 Alpha Beta 2-Layer Sandwich Beta-Lactamase GAF domain
B1.10.1300.10 Mainly Alpha Orthogonal Bundle Catalytic domain of cyclic nucleotide phosphodiesterase 4b2b 3'5'-cyclic nucleotide phosphodiesterase, catalytic domain

Protein Family Annotation Pfam Database Homepage

ChainsAccessionIdentifierDescriptionCommentsSource
A, BPF01590GAF domain (GAF)GAF domainThis domain is present in cGMP-specific phosphodiesterases, adenylyl and guanylyl cyclases, phytochromes, FhlA and NifA. Adenylyl and guanylyl cyclases catalyse ATP and GTP to the second messengers cAMP and cGMP, respectively, these products up-regul ...This domain is present in cGMP-specific phosphodiesterases, adenylyl and guanylyl cyclases, phytochromes, FhlA and NifA. Adenylyl and guanylyl cyclases catalyse ATP and GTP to the second messengers cAMP and cGMP, respectively, these products up-regulating catalytic activity by binding to the regulatory GAF domain(s). The opposite hydrolysis reaction is catalysed by phosphodiesterase. cGMP-dependent 3',5'-cyclic phosphodiesterase catalyses the conversion of guanosine 3',5'-cyclic phosphate to guanosine 5'-phosphate. Here too, cGMP regulates catalytic activity by GAF-domain binding. Phytochromes are regulatory photoreceptors in plants and bacteria which exist in two thermally-stable states that are reversibly inter-convertible by light: the Pr state absorbs maximally in the red region of the spectrum, while the Pfr state absorbs maximally in the far-red region. This domain is also found in FhlA (formate hydrogen lyase transcriptional activator) and NifA, a transcriptional activator which is required for activation of most Nif operons which are directly involved in nitrogen fixation. NifA interacts with sigma-54.
Domain
A, BPF13185GAF domain (GAF_2)GAF domain- Domain
A, BPF002333'5'-cyclic nucleotide phosphodiesterase (PDEase_I)3'5'-cyclic nucleotide phosphodiesterase- Domain

Gene Product Annotation Gene Product Annotation

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, BcGMP-dependent 3',5'-cyclic phosphodiesterase