Annotations: 2JTK

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	KOG1218_like	e2jtkA3	A: few secondary structure elements	X: omega toxin-like	H: omega toxin-related	T: Colipase-like	F: KOG1218_like	ECOD (1.6)
A	Prokineticin_like	e2jtkA4	A: few secondary structure elements	X: omega toxin-like	H: omega toxin-related	T: Colipase-like	F: Prokineticin_like	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.10.80.10	Mainly Beta	Ribbon	Lipase, subunit A	Lipase, subunit A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF21481	Dickkopf-related protein 1/2/4, C-terminal subdomain 1 (DIKK1-2-4_C-subdom1)	Dickkopf-related protein 1/2/4, C-terminal subdomain 1	Dickkopf-related proteins are cysteine-rich secretory proteins and highly conserved inhibitors of the canonical Wnt signaling pathway, which play key roles in many essential biological processes. This entry represents the C-terminal cysteine-rich dom ...	Dickkopf-related proteins are cysteine-rich secretory proteins and highly conserved inhibitors of the canonical Wnt signaling pathway, which play key roles in many essential biological processes. This entry represents the C-terminal cysteine-rich domain which is strongly conserved in Dkk1, Dkk2 and Dkk4, and directly contacts LRP6 [1-4]. This domain is described as two subdomains, each consisting of three anti-parallel beta-strands that are connected by a long loop which contains a short alpha-helix. This entry represents the first subdomain, the second is covered in Pfam:PF21479. In Dkk3 the residues differ and is consistent with studies indicating that Dkk3 is a divergent family member that does not inhibit Wnt signalling [4]. This domain share significant sequence similarity to the colipase fold.	Domain
A	PF21479	Dickkopf-related protein 1/2/4, C-terminal subdomain 2 (DIKK1-2-4_C-subdom2)	Dickkopf-related protein 1/2/4, C-terminal subdomain 2	Dickkopf-related proteins are cysteine-rich secretory proteins and highly conserved inhibitors of the canonical Wnt signaling pathway, which play key roles in many essential biological processes. The C-terminal domain is described as two subdomains, ...	Dickkopf-related proteins are cysteine-rich secretory proteins and highly conserved inhibitors of the canonical Wnt signaling pathway, which play key roles in many essential biological processes. The C-terminal domain is described as two subdomains, each consisting of three anti-parallel beta-strands that are connected by a long loop which contains a short alpha-helix. This domain is strongly conserved in Dkk1, Dkk2 and Dkk4, and directly contacts LRP6. This entry represents the second subdomain [1-4]. In Dkk3 these residues differ and is consistent with studies indicating that Dkk3 is a divergent family member that does not inhibit Wnt signalling [4]. This domain share significant sequence similarity to the colipase fold.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Dickkopf-related protein 2	co-receptor binding protein binding binding	cellular response to stimulus regulation of cellular process response to stimulus negative regulation of signaling signaling negative regulation of biological process regulation of signal transduction negative regulation of cell communication cell communication negative regulation of Wnt signaling pathway negative regulation of cellular process signal transduction Wnt signaling pathway regulation of signaling cellular response to stimulus regulation of cellular process response to stimulus negative regulation of signaling signaling negative regulation of biological process regulation of signal transduction negative regulation of cell communication cell communication negative regulation of Wnt signaling pathway negative regulation of cellular process signal transduction Wnt signaling pathway regulation of signaling regulation of biological process cell surface receptor signaling pathway regulation of Wnt signaling pathway negative regulation of response to stimulus biological regulation negative regulation of signal transduction regulation of response to stimulus regulation of cell communication cellular process regulation of canonical Wnt signaling pathway canonical Wnt signaling pathway negative regulation of canonical Wnt signaling pathway positive regulation of cell communication positive regulation of signal transduction positive regulation of biological process positive regulation of response to stimulus positive regulation of Wnt signaling pathway positive regulation of cellular process positive regulation of canonical Wnt signaling pathway positive regulation of signaling	cellular anatomical structure extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR006796	Dickkopf, N-terminal cysteine-rich	Domain
A	IPR039863	Dickkopf related protein 1-4	Family
A	IPR047303	Dickkopf-related protein 2, first cysteine-rich domain	Domain
A	IPR048500	Dickkopf-related protein 1/2/4, C-terminal subdomain 1	Domain
A	IPR047302	Dickkopf-related protein 2, second cysteine-rich domain	Domain
A	IPR048499	Dickkopf-related protein 1/2/4, C-terminal subdomain 2	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.