3TRC

Structure of the GAF domain from a phosphoenolpyruvate-protein phosphotransferase (ptsP) from Coxiella burnetii

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	GAF	e3trcA1	A: a+b three layers	X: Profilin-like	H: sensor domains (From Topology)	T: sensor domains	F: GAF	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.450.40	Alpha Beta	2-Layer Sandwich	Beta-Lactamase	GAF domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF01590	GAF domain (GAF)	GAF domain	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-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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Phosphoenolpyruvate-protein phosphotransferase	kinase activity transferase activity catalytic activity transferase activity, transferring phosphorus-containing groups phosphoenolpyruvate-protein phosphotransferase activity phosphotransferase activity, nitrogenous group as acceptor cation binding ion binding binding metal ion binding small molecule binding	import into cell phosphoenolpyruvate-dependent sugar phosphotransferase system transport import across plasma membrane carbohydrate import across plasma membrane carbohydrate transport establishment of localization transmembrane transport localization cellular process carbohydrate transmembrane transport	cellular anatomical structure membrane intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR015813	Pyruvate/Phosphoenolpyruvate kinase-like domain superfamily	Homologous Superfamily
A	IPR008279	PEP-utilising enzyme, mobile domain	Domain
A	IPR036618	PtsI, HPr-binding domain superfamily	Homologous Superfamily
A	IPR006318	Phosphotransferase system, enzyme I-like	Domain
A	IPR023151	PEP-utilising enzyme, conserved site	Conserved Site
A	IPR036637	Phosphohistidine domain superfamily	Homologous Superfamily
A	IPR050499	Phosphoenolpyruvate-dependent sugar PTS enzyme	Family
A	IPR003018	GAF domain	Domain
A	IPR029016	GAF-like domain superfamily	Homologous Superfamily
A	IPR040442	Pyruvate kinase-like domain superfamily	Homologous Superfamily
A	IPR008731	Phosphotransferase system, enzyme I N-terminal	Domain
A	IPR000121	PEP-utilising enzyme, C-terminal	Domain

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.