Annotations: 7RZW

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF00512	e7rzwA6	A: alpha duplicates or obligate multimers	X: ROP-like	H: Homodimeric domain of signal transducing histidine kinase (From Topology)	T: Homodimeric domain of signal transducing histidine kinase	F: PF00512	ECOD (1.6)
A	PF02518	e7rzwA4	A: a+b two layers	X: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase-like	H: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase (From Topology)	T: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase	F: PF02518	ECOD (1.6)
A	PF00360	e7rzwA2	A: a+b three layers	X: Profilin-like	H: sensor domains (From Topology)	T: sensor domains	F: PF00360	ECOD (1.6)
A	PF00989	e7rzwA5	A: a+b three layers	X: Profilin-like	H: sensor domains (From Topology)	T: sensor domains	F: PF00989	ECOD (1.6)
A	PF01590	e7rzwA1	A: a+b three layers	X: Profilin-like	H: sensor domains (From Topology)	T: sensor domains	F: PF01590	ECOD (1.6)
A	PF08446	e7rzwA3	A: a+b three layers	X: Profilin-like	H: sensor domains (From Topology)	T: sensor domains	F: PF08446	ECOD (1.6)
B	PF00512	e7rzwB6	A: alpha duplicates or obligate multimers	X: ROP-like	H: Homodimeric domain of signal transducing histidine kinase (From Topology)	T: Homodimeric domain of signal transducing histidine kinase	F: PF00512	ECOD (1.6)
B	PF02518	e7rzwB4	A: a+b two layers	X: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase-like	H: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase (From Topology)	T: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase	F: PF02518	ECOD (1.6)
B	PF00360	e7rzwB2	A: a+b three layers	X: Profilin-like	H: sensor domains (From Topology)	T: sensor domains	F: PF00360	ECOD (1.6)
B	PF00989	e7rzwB5	A: a+b three layers	X: Profilin-like	H: sensor domains (From Topology)	T: sensor domains	F: PF00989	ECOD (1.6)
B	PF01590	e7rzwB1	A: a+b three layers	X: Profilin-like	H: sensor domains (From Topology)	T: sensor domains	F: PF01590	ECOD (1.6)
B	PF08446	e7rzwB3	A: a+b three layers	X: Profilin-like	H: sensor domains (From Topology)	T: sensor domains	F: PF08446	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00512	His Kinase A (phospho-acceptor) domain (HisKA)	His Kinase A (phospho-acceptor) domain	Dimerisation and phospho-acceptor domain of histidine kinases.	Domain
A, B	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
A, B	PF00989	PAS fold (PAS)	PAS fold	The PAS fold corresponds to the structural domain that has previously been defined as PAS and PAC motifs [4]. The PAS fold appears in archaea, eubacteria and eukarya. This domain can bind gases (O2, CO and NO), FAD, 4-hydroxycinnamic acid and NAD+ (M ...	The PAS fold corresponds to the structural domain that has previously been defined as PAS and PAC motifs [4]. The PAS fold appears in archaea, eubacteria and eukarya. This domain can bind gases (O2, CO and NO), FAD, 4-hydroxycinnamic acid and NAD+ (Matilla et.al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).	Domain
A, B	PF02518	Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase (HATPase_c)	Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase	This family represents the structurally related ATPase domains of histidine kinase, DNA gyrase B and HSP90.	Domain
A, B	PF08446	PAS fold (PAS_2)	PAS fold	The PAS fold corresponds to the structural domain that has previously been defined as PAS and PAC motifs [4]. The PAS fold appears in archaea, eubacteria and eukarya.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Phytochrome B	catalytic activity, acting on a protein small molecule sensor activity kinase activity protein kinase activity transferase activity phosphotransferase activity, nitrogenous group as acceptor phosphotransferase activity, alcohol group as acceptor protein histidine kinase activity transferase activity, transferring phosphorus-containing groups phosphorelay sensor kinase activity catalytic activity sequence-specific DNA binding DNA binding binding catalytic activity, acting on a protein small molecule sensor activity kinase activity protein kinase activity transferase activity phosphotransferase activity, nitrogenous group as acceptor phosphotransferase activity, alcohol group as acceptor protein histidine kinase activity transferase activity, transferring phosphorus-containing groups phosphorelay sensor kinase activity catalytic activity sequence-specific DNA binding DNA binding binding organic cyclic compound binding nucleic acid binding protein-containing complex binding chromatin binding promoter-specific chromatin binding identical protein binding protein binding red or far-red light photoreceptor activity red light photoreceptor activity molecular transducer activity photoreceptor activity signaling receptor activity far-red light photoreceptor activity protein homodimerization activity protein dimerization activity	photoperiodism, flowering developmental process response to light stimulus multicellular organismal process regulation of biological process reproductive system development response to stimulus reproductive process biological regulation vegetative to reproductive phase transition of meristem developmental process involved in reproduction multicellular organism development photoperiodism regulation of response to stimulus anatomical structure development photoperiodism, flowering developmental process response to light stimulus multicellular organismal process regulation of biological process reproductive system development response to stimulus reproductive process biological regulation vegetative to reproductive phase transition of meristem developmental process involved in reproduction multicellular organism development photoperiodism regulation of response to stimulus anatomical structure development reproductive structure development post-embryonic development response to radiation response to abiotic stimulus regulation of photoperiodism, flowering system development response to stress response to cold response to temperature stimulus rhythmic process entrainment of circadian clock circadian rhythm response to external stimulus regulation of circadian rhythm regulation of defense response defense response regulation of response to stress response to red or far red light photomorphogenesis response to low light intensity stimulus response to light intensity response to red light response to low fluence red light stimulus photosynthesis cellular metabolic process metabolic process cellular process tropism gravitropism response to gravity regulation of multicellular organismal development regulation of developmental process regulation of seedling development seed germination seedling development regulation of post-embryonic development regulation of seed germination regulation of multicellular organismal process organonitrogen compound metabolic process protein-tetrapyrrole linkage primary metabolic process protein-bilin linkage organic substance metabolic process protein-phytochromobilin linkage macromolecule modification protein metabolic process macromolecule metabolic process protein modification process stomatal complex development plant epidermis development tissue development inorganic ion homeostasis intracellular calcium ion homeostasis homeostatic process calcium ion homeostasis regulation of cytosolic calcium ion concentration cellular homeostasis chemical homeostasis circadian regulation of calcium ion oscillation intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis protein-DNA complex organization cellular component organization protein-containing complex organization chromatin organization cellular component organization or biogenesis regulation of cellular process negative regulation of biological process negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription regulation of RNA metabolic process organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process negative regulation of DNA-templated transcription negative regulation of metabolic process regulation of cellular metabolic process negative regulation of cellular biosynthetic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process negative regulation of macromolecule biosynthetic process organic cyclic compound biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process negative regulation of RNA metabolic process cellular biosynthetic process RNA metabolic process RNA biosynthetic process nucleic acid biosynthetic process negative regulation of cellular process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process negative regulation of biosynthetic process oxoacid metabolic process organic hydroxy compound metabolic process sesquiterpenoid metabolic process carboxylic acid metabolic process alcohol metabolic process organic acid metabolic process abscisic acid metabolic process apocarotenoid metabolic process cellular lipid metabolic process olefinic compound metabolic process small molecule metabolic process monocarboxylic acid metabolic process terpenoid metabolic process tertiary alcohol metabolic process isoprenoid metabolic process lipid metabolic process localization transport fluid transport transpiration establishment of localization water transport cellular response to stimulus cellular response to red light cellular response to red or far red light red light signaling pathway signaling red or far-red light signaling pathway cellular response to radiation cellular response to environmental stimulus cell communication cellular response to light stimulus cellular response to abiotic stimulus signal transduction response to organic substance response to lipid hormone-mediated signaling pathway cellular response to endogenous stimulus cellular response to jasmonic acid stimulus response to hormone cellular response to organic substance cellular response to hormone stimulus response to jasmonic acid response to fatty acid response to endogenous stimulus response to oxygen-containing compound jasmonic acid mediated signaling pathway cellular response to oxygen-containing compound cellular response to fatty acid cellular response to chemical stimulus response to chemical cellular response to lipid detection of light stimulus detection of external stimulus detection of stimulus detection of visible light detection of abiotic stimulus response to low fluence blue light stimulus by blue low-fluence system response to blue light phototropism response to far red light	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck nuclear body intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck nuclear body intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR012129	Phytochrome A/B/C/D/E	Family
A, B	IPR003594	Histidine kinase/HSP90-like ATPase	Domain
A, B	IPR001294	Phytochrome	Family
A, B	IPR013515	Phytochrome, central region	Domain
A, B	IPR035965	PAS domain superfamily	Homologous Superfamily
A, B	IPR005467	Histidine kinase domain	Domain
A, B	IPR029016	GAF-like domain superfamily	Homologous Superfamily
A, B	IPR036890	Histidine kinase/HSP90-like ATPase superfamily	Homologous Superfamily
A, B	IPR003661	Signal transduction histidine kinase, dimerisation/phosphoacceptor domain	Domain
A, B	IPR013654	PAS fold-2	Domain
A, B	IPR013516	Phytochrome chromophore binding site	Binding Site
A, B	IPR003018	GAF domain	Domain
A, B	IPR016132	Phytochrome chromophore attachment domain	Domain
A, B	IPR013767	PAS fold	Domain
A, B	IPR044767	Phytochrome A/B/C/D/E-like, histidine-kinase-related domain	Domain
A, B	IPR000014	PAS domain	Domain
A, B	IPR043150	Phytochrome, PHY domain superfamily	Homologous Superfamily

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 R01GM133198.