Annotations: 4XAH

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	CGI-121	e4xahA1	A: a+b two layers	X: Alpha-beta plaits	H: PF0523-like (From Topology)	T: PF0523-like	F: CGI-121	ECOD (1.6)
B	CGI-121	e4xahB1	A: a+b two layers	X: Alpha-beta plaits	H: PF0523-like (From Topology)	T: PF0523-like	F: CGI-121	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.2380.10	Alpha Beta	2-Layer Sandwich	PF0523-like	CGI121/TPRKB	CATH (4.3.0)
B	3.30.2380.10	Alpha Beta	2-Layer Sandwich	PF0523-like	CGI121/TPRKB	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF08617	Kinase binding protein CGI-121 (CGI-121)	Kinase binding protein CGI-121	CGI-121 has been shown to bind to the p53-related protein kinase (PRPK) [1]. PRPK is a novel protein kinase which binds to and induces phosphorylation of the tumour suppressor protein p53. CGI-121 is part of a conserved protein complex, KEOPS. The K ...	CGI-121 has been shown to bind to the p53-related protein kinase (PRPK) [1]. PRPK is a novel protein kinase which binds to and induces phosphorylation of the tumour suppressor protein p53. CGI-121 is part of a conserved protein complex, KEOPS. The KEOPS complex is involved in telomere uncapping and telomere elongation [2]. Interestingly this family also include archaeal homologues, formerly in the DUF509 family. A structure for these proteins has been solved by structural genomics.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	EKC/KEOPS complex subunit CGI121	RNA binding binding organic cyclic compound binding tRNA binding nucleic acid binding	tRNA threonylcarbamoyladenosine modification cellular biosynthetic process RNA metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process tRNA processing tRNA threonylcarbamoyladenosine metabolic process RNA processing cellular metabolic process tRNA modification primary metabolic process gene expression nucleobase-containing compound biosynthetic process tRNA threonylcarbamoyladenosine modification cellular biosynthetic process RNA metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process tRNA processing tRNA threonylcarbamoyladenosine metabolic process RNA processing cellular metabolic process tRNA modification primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process tRNA metabolic process RNA modification biosynthetic process macromolecule modification metabolic process cellular process macromolecule metabolic process DNA recombination mitotic recombination telomere organization chromosome organization DNA metabolic process telomere maintenance cellular component organization organelle organization telomere maintenance via recombination cellular component organization or biogenesis maintenance of translational fidelity translation protein metabolic process regulation of cellular process positive regulation of DNA-templated transcription positive regulation of biological process positive regulation of cellular metabolic process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II positive regulation of biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process positive regulation of cellular process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of transcription by RNA polymerase II regulation of biological process positive regulation of nucleobase-containing compound metabolic process biological regulation regulation of cellular metabolic process regulation of macromolecule metabolic process positive regulation of transcription by RNA polymerase II regulation of cellular biosynthetic process positive regulation of RNA metabolic process regulation of gene expression positive regulation of RNA biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process positive regulation of cellular biosynthetic process	protein-containing complex catalytic complex transferase complex EKC/KEOPS complex intracellular anatomical structure cytoplasm cellular anatomical entity cytosol intracellular organelle organelle intracellular non-membrane-bounded organelle chromosome chromosome, telomeric region chromosomal region protein-containing complex catalytic complex transferase complex EKC/KEOPS complex intracellular anatomical structure cytoplasm cellular anatomical entity cytosol intracellular organelle organelle intracellular non-membrane-bounded organelle chromosome chromosome, telomeric region chromosomal region non-membrane-bounded organelle membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR013926	CGI121/TPRKB	Family
A, B	IPR036504	CGI121/TPRKB 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 R01GM157729.