Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyHD-domain/PDEase-like 8067455 3000943 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyHD-domain/PDEase-like 8067455 3000943 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APDEase_Ie3ibjA3 A: alpha complex topologyX: PDEase-likeH: HD-domain/PDEase-like (From Topology)T: HD-domain/PDEase-likeF: PDEase_IECOD (1.6)
AGAFe3ibjA1 A: a+b three layersX: Profilin-likeH: sensor domains (From Topology)T: sensor domainsF: GAFECOD (1.6)
BPDEase_Ie3ibjB2 A: alpha complex topologyX: PDEase-likeH: HD-domain/PDEase-like (From Topology)T: HD-domain/PDEase-likeF: PDEase_IECOD (1.6)
BGAFe3ibjB3 A: a+b three layersX: Profilin-likeH: sensor domains (From Topology)T: sensor domainsF: GAFECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF01590GAF 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. This domain can bind biliverdine and phycocyanobilin (Matilla et al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).
Domain
A, B
PF002333'5'-cyclic nucleotide phosphodiesterase (PDEase_I)3'5'-cyclic nucleotide phosphodiesterase- Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

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