4A4I

Crystal structure of the human Lin28b cold shock domain

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
Pharos: Disease Associations

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4a4ia_	All beta proteins	OB-fold	Nucleic acid-binding proteins	automated matches	automated matches	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d4a4ib_	All beta proteins	OB-fold	Nucleic acid-binding proteins	automated matches	automated matches	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Cold shock DNA-binding domain-like	8065425	4001909	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Nucleic acid-binding proteins	8065426	3000135	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Nucleic acid-binding proteins	8065426	3000135	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	CSD	e4a4iA1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: CSD	ECOD (1.6)
B	CSD	e4a4iB2	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: CSD	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
B	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00313	'Cold-shock' DNA-binding domain (CSD)	'Cold-shock' DNA-binding domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	PROTEIN LIN-28 HOMOLOG B	RNA binding binding nucleic acid binding mRNA binding cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding double-stranded DNA binding	regulation of cellular process catabolic process positive regulation of biological process RNA metabolic process macromolecule catabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process positive regulation of metabolic process post-transcriptional regulation of gene expression regulation of RNA metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process regulation of biological quality positive regulation of cellular process regulation of cellular process catabolic process positive regulation of biological process RNA metabolic process macromolecule catabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process positive regulation of metabolic process post-transcriptional regulation of gene expression regulation of RNA metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process regulation of biological quality positive regulation of cellular process RNA catabolic process regulation of biosynthetic process RNA destabilization positive regulation of nucleobase-containing compound metabolic process regulation of biological process biological regulation primary metabolic process regulation of macromolecule metabolic process regulation of catabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound catabolic process positive regulation of RNA metabolic process positive regulation of catabolic process regulation of gene expression biosynthetic process regulation of RNA stability nucleic acid catabolic process cellular process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of metabolic process pre-miRNA processing negative regulation of biological process positive regulation of macromolecule biosynthetic process RNA processing negative regulation of pre-miRNA processing negative regulation of metabolic process regulation of miRNA processing miRNA-mediated post-transcriptional gene silencing negative regulation of gene expression negative regulation of macromolecule biosynthetic process negative regulation of miRNA-mediated gene silencing post-transcriptional gene silencing miRNA processing negative regulation of post-transcriptional gene silencing regulation of pre-miRNA processing regulation of miRNA-mediated gene silencing RNA biosynthetic process nucleic acid biosynthetic process negative regulation of post-transcriptional gene silencing by regulatory ncRNA regulation of regulatory ncRNA processing regulation of gene silencing by regulatory ncRNA positive regulation of biosynthetic process negative regulation of cellular process regulation of post-transcriptional gene silencing by regulatory ncRNA negative regulation of miRNA processing negative regulation of macromolecule metabolic process negative regulation of gene silencing by regulatory ncRNA nucleobase-containing compound biosynthetic process regulatory ncRNA-mediated post-transcriptional gene silencing regulatory ncRNA processing regulatory ncRNA-mediated gene silencing regulation of post-transcriptional gene silencing negative regulation of biosynthetic process positive regulation of gene expression primary miRNA processing negative regulation of primary miRNA processing regulation of primary miRNA processing miRNA catabolic process miRNA metabolic process RNA 3'-end processing positive regulation of miRNA metabolic process regulation of miRNA metabolic process regulation of miRNA catabolic process positive regulation of miRNA catabolic process	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen cytoplasm cytosol nucleoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR011129	Cold-shock domain	Domain
A, B	IPR036875	Zinc finger, CCHC-type superfamily	Homologous Superfamily
A, B	IPR051373	Lin-28 homolog RNA-binding protein	Family
A, B	IPR001878	Zinc finger, CCHC-type	Domain
A, B	IPR054081	Lin-28A-like, second zinc knuckle	Domain
A, B	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
A, B	IPR002059	Cold-shock protein Csp, DNA-binding	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q6ZN17	neuroblastoma cancer benign neoplasm Cell Transformation, Neoplastic glioblastoma bipolar disorder cystic fibrosis large cell medulloblastoma pilocytic astrocytoma endogenous depression medulloblastoma

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.