Annotations: 4XKC

Crystal Structure of GENOMES UNCOUPLED 4 (GUN4) in Complex with Magnesium Deuteroporphyrin IX

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4xkca1	All alpha proteins	alpha-alpha superhelix	ARM repeat	GUN4-associated domain	Mg-chelatase cofactor Gun4	(Synechocystis sp. PCC 6803 substr. Kazusa ) [TaxId: 1111708 ],	SCOPe (2.08)
A	d4xkca2	All alpha proteins	GUN4-like	GUN4-like	GUN4-like	Mg-chelatase cofactor Gun4	(Synechocystis sp. PCC 6803 substr. Kazusa ) [TaxId: 1111708 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	GUN4-like	8034128	3001841	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	ARM repeat-like	8034126	3000116	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	WD40	e4xkcA1	A: beta barrels	X: OB-fold	H: Phage tail fiber protein trimerization domain	T: 7-bladed	F: WD40	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.25.40.620	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat		CATH (4.3.0)
A	1.10.10.1770	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Gun4-like	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF05419	GUN4-like (GUN4)	GUN4-like	In Arabidopsis, GUN4 is required for the functioning of the plastid mediated repression of nuclear transcription that is involved in controlling the levels of magnesium- protoporphyrin IX. GUN4 binds the product and substrate of Mg-chelatase, an enz ...	In Arabidopsis, GUN4 is required for the functioning of the plastid mediated repression of nuclear transcription that is involved in controlling the levels of magnesium- protoporphyrin IX. GUN4 binds the product and substrate of Mg-chelatase, an enzyme that produces Mg-Proto, and activates Mg-chelatase. GUN4 is thought to participates in plastid-to-nucleus signaling by regulating magnesium-protoporphyrin IX synthesis or trafficking.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Ycf53-like protein	binding tetrapyrrole binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR032192	GUN4, N-terminal ARM-like repeat domain	Domain
A	IPR037215	GUN4-like superfamily	Homologous Superfamily
A	IPR016024	Armadillo-type fold	Homologous Superfamily
A	IPR008629	GUN4-like	Domain

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.