3CU3

Crystal structure of a domain of unknown function with a cystatin-like fold (npun_r1993) from nostoc punctiforme pcc 73102 at 2.00 A resolution

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family 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	d3cu3a1	Alpha and beta proteins (a+b)	Cystatin-like	NTF2-like	BaiE/LinA-like	Uncharacterized protein NpunR1993	(Nostoc punctiforme PCC 73102 ) [TaxId: 63737 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	BaiE/LinA-like	8027938	4001675	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	NTF2-like	8040317	3000472	SCOP2 (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	PF14534	e3cu3A1	A: a+b two layers	X: Cystatin-like	H: NTF2-like (From Topology)	T: NTF2-like	F: PF14534	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.10.450.50	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF14534	Domain of unknown function (DUF4440) (DUF4440)	Domain of unknown function (DUF4440)	This domain is found in uncharacterised proteins from bacteria, archaea and eukaryotes, including NTF2-Like SgcJ protein from Streptomyces carzinostaticus, which plays a role in the biosynthesis of the 9-membered enediyne antitumor antibiotic C-1027. ...	This domain is found in uncharacterised proteins from bacteria, archaea and eukaryotes, including NTF2-Like SgcJ protein from Streptomyces carzinostaticus, which plays a role in the biosynthesis of the 9-membered enediyne antitumor antibiotic C-1027. It shows a cone-like alpha+beta barrel structure with a long N-terminal alpha- helix, a curved six-stranded antiparallel beta-sheet and two additional shorter alpha-helices. Its specific function is still unkown [1].	Domain

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR032710	NTF2-like domain superfamily	Homologous Superfamily
A	IPR027843	Domain of unknown function DUF4440	Domain
A	IPR011944	Steroid delta5-4-isomerase	Family

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.