Annotations: 3T9O

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	CZB	e3t9oA1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Regulatory CZB domain of diguanylate cyclase YdeH (From Topology)	T: Regulatory CZB domain of diguanylate cyclase YdeH	F: CZB	ECOD (1.6)
B	CZB	e3t9oB2	A: alpha bundles	X: Four-helical up-and-down bundle	H: Regulatory CZB domain of diguanylate cyclase YdeH (From Topology)	T: Regulatory CZB domain of diguanylate cyclase YdeH	F: CZB	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.120.30	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Aspartate receptor, ligand-binding domain	CATH (4.3.0)
B	1.20.120.30	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Aspartate receptor, ligand-binding domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF13682	Chemoreceptor zinc-binding domain (CZB)	Chemoreceptor zinc-binding domain	The chemoreceptor zinc-binding domain (CZB) is found in bacterial signal transduction proteins - most frequently receptors involved in chemotaxis and motility, but also in c-di-GMP signalling and nitrate/nitrite-sensing. Originally discovered in the ...	The chemoreceptor zinc-binding domain (CZB) is found in bacterial signal transduction proteins - most frequently receptors involved in chemotaxis and motility, but also in c-di-GMP signalling and nitrate/nitrite-sensing. Originally discovered in the cytoplasmic chemoreceptor TlpD from Helicobacter pylori, it is often found C-terminal to the MCPsignal domain in cytoplasmic chemoreceptor proteins. The CZB domain contains a core sequence motif, Hxx[WFYL]x21-28Cx[LFMVI]Gx[WFLVI]x18-27HxxxH. The highly-conserved H-C-H-H residues of this motif are believed to coordinate zinc; mutating the latter two histidines of the motif to alanines abolishes Zn binding. This domain binds zinc with high affinity, with a Kd in the femtomolar range. This domain has been shown in E. coli to be a zinc sensor that regulates the catalytic activity of Pfam:PF00990 [2]. This domain also binds the chemoattractant HOCl at a site very close to that of zinc. It has been shown that zinc participates in HOCl sensing by forming a redox 'Cys-Zn switch' that reacts towards HOCl (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, B	Diguanylate cyclase DgcZ	transferase activity nucleotidyltransferase activity catalytic activity diguanylate cyclase activity transferase activity, transferring phosphorus-containing groups identical protein binding protein binding binding protein homodimerization activity protein dimerization activity cation binding transition metal ion binding zinc ion binding ion binding transferase activity nucleotidyltransferase activity catalytic activity diguanylate cyclase activity transferase activity, transferring phosphorus-containing groups identical protein binding protein binding binding protein homodimerization activity protein dimerization activity cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding organic cyclic compound binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding	regulation of biological process cell aggregation regulation of cellular process biofilm formation regulation of single-species biofilm formation on inanimate substrate positive regulation of single-species biofilm formation on inanimate substrate biological process involved in intraspecies interaction between organisms biological regulation positive regulation of biological process single-species biofilm formation single-species biofilm formation on inanimate substrate positive regulation of single-species biofilm formation aggregation of unicellular organisms submerged biofilm formation regulation of single-species biofilm formation regulation of biological process cell aggregation regulation of cellular process biofilm formation regulation of single-species biofilm formation on inanimate substrate positive regulation of single-species biofilm formation on inanimate substrate biological process involved in intraspecies interaction between organisms biological regulation positive regulation of biological process single-species biofilm formation single-species biofilm formation on inanimate substrate positive regulation of single-species biofilm formation aggregation of unicellular organisms submerged biofilm formation regulation of single-species biofilm formation cellular process single-species submerged biofilm formation positive regulation of cellular process regulation of bacterial-type flagellum-dependent cell motility negative regulation of locomotion regulation of cell motility negative regulation of biological process archaeal or bacterial-type flagellum-dependent cell motility cilium or flagellum-dependent cell motility regulation of locomotion negative regulation of cellular process negative regulation of cell motility bacterial-type flagellum-dependent cell motility cell motility negative regulation of bacterial-type flagellum-dependent cell motility locomotion regulation of cellular component organization cell projection organization bacterial-type flagellum assembly membraneless organelle assembly negative regulation of organelle assembly cellular component biogenesis cellular component organization cellular component assembly cellular component organization or biogenesis negative regulation of cell projection organization regulation of bacterial-type flagellum assembly organelle assembly negative regulation of cellular component organization regulation of cell projection assembly regulation of cell projection organization regulation of cellular component biogenesis regulation of organelle organization bacterial-type flagellum organization organelle organization negative regulation of organelle organization regulation of organelle assembly cell projection assembly negative regulation of bacterial-type flagellum assembly cell adhesion involved in biofilm formation cell-substrate adhesion cell adhesion involved in single-species biofilm formation cell adhesion	cellular anatomical structure cell pole cell periphery plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR050469	Bacterial Diguanylate Cyclase	Family
A, B	IPR000160	GGDEF domain	Domain
A, B	IPR043128	Reverse transcriptase/Diguanylate cyclase domain	Homologous Superfamily
A, B	IPR025991	Chemoreceptor zinc-binding domain	Domain
A, B	IPR029787	Nucleotide cyclase	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 R01GM157729.