Annotations: 3Q6S

The crystal structure of the heterochromatin protein 1 beta chromoshadow domain complexed with a peptide from Shugoshin 1

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)
D	d3q6sd_	All beta proteins	SH3-like barrel	Chromo domain-like	Chromo domain	Heterochromatin protein 1, HP1	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d3q6sc_	All beta proteins	SH3-like barrel	Chromo domain-like	Chromo domain	Heterochromatin protein 1, HP1	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d3q6sb_	All beta proteins	SH3-like barrel	Chromo domain-like	Chromo domain	Heterochromatin protein 1, HP1	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d3q6sa_	All beta proteins	SH3-like barrel	Chromo domain-like	Chromo domain	Heterochromatin protein 1, HP1	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)
D	SCOP2B Superfamily	Chromo domain-like	8041155	3000161	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Chromo domain-like	8041155	3000161	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Chromo domain-like	8041155	3000161	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Chromo domain-like	8041155	3000161	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)
D	Peptidase_M14	e3q6sD1	A: beta barrels	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Peptidase_M14	ECOD (v294.2)
C	Peptidase_M14	e3q6sC1	A: beta barrels	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Peptidase_M14	ECOD (v294.2)
B	Peptidase_M14	e3q6sB1	A: beta barrels	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Peptidase_M14	ECOD (v294.2)
A	MHC_I	e3q6sA1	A: beta barrels	X: MHC antigen-recognition domain	H: MHC antigen-recognition domain	T: MHC antigen-recognition domain	F: MHC_I	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D	2.40.50.40	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.3.0)
C	2.40.50.40	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.3.0)
B	2.40.50.40	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.3.0)
A	2.40.50.40	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF01393	Chromo shadow domain (Chromo_shadow)	Chromo shadow domain	This domain is distantly related to Pfam:PF00385. This domain is always found in association with a chromo domain.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E, F	Shugoshin-like 1	protein binding binding kinase binding enzyme binding	metaphase chromosome alignment localization attachment of spindle microtubules to kinetochore chromosome localization organelle localization nuclear chromosome segregation cellular process cell cycle chromosome segregation cell cycle process cell division meiotic chromosome segregation sexual reproduction reproductive process metaphase chromosome alignment localization attachment of spindle microtubules to kinetochore chromosome localization organelle localization nuclear chromosome segregation cellular process cell cycle chromosome segregation cell cycle process cell division meiotic chromosome segregation sexual reproduction reproductive process meiotic cell cycle organelle fission meiotic cell cycle process cellular component organization nuclear division organelle organization meiotic nuclear division cellular component organization or biogenesis microtubule organizing center organization microtubule cytoskeleton organization centriole-centriole cohesion centrosome cycle microtubule-based process cytoskeleton organization mitotic sister chromatid cohesion chromosome organization sister chromatid cohesion centromeric sister chromatid cohesion mitotic sister chromatid cohesion, centromeric	intracellular organelle cellular anatomical structure intracellular anatomical structure cytoskeleton spindle organelle membraneless organelle intracellular membraneless organelle spindle pole microtubule cytoskeleton chromosome chromosomal region kinetochore chromosome, centromeric region intracellular organelle cellular anatomical structure intracellular anatomical structure cytoskeleton spindle organelle membraneless organelle intracellular membraneless organelle spindle pole microtubule cytoskeleton chromosome chromosomal region kinetochore chromosome, centromeric region condensed chromosome, centromeric region supramolecular complex condensed chromosome membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck ribonucleoprotein granule nuclear body nucleoplasm organelle lumen nuclear ribonucleoprotein granule nuclear lumen centrosome microtubule organizing center cytoplasm cytosol
A, B, C, D	Chromobox protein homolog 1	chromatin binding binding histone reader activity chromatin-protein adaptor activity protein-macromolecule adaptor activity histone H1K26me2 reader activity histone H1 reader activity molecular adaptor activity histone H1K26me1 reader activity histone methyltransferase binding protein binding enzyme binding identical protein binding	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process regulation of cellular process negative regulation of biological process RNA metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process regulation of cellular process negative regulation of biological process RNA metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process negative regulation of DNA-templated transcription regulation of biological process negative regulation of metabolic process biological regulation primary metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process negative regulation of RNA metabolic process cellular component organization cellular component biogenesis cellular component assembly chromatin organization chromatin remodeling cellular component organization or biogenesis heterochromatin formation epigenetic regulation of gene expression heterochromatin organization negative regulation of gene expression negative regulation of gene expression, epigenetic	intracellular organelle cellular anatomical structure intracellular anatomical structure organelle membraneless organelle chromosome, centromeric region intracellular membraneless organelle chromosome chromosomal region membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle cellular anatomical structure intracellular anatomical structure organelle membraneless organelle chromosome, centromeric region intracellular membraneless organelle chromosome chromosomal region membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen chromatin pericentric heterochromatin heterochromatin pronucleus male pronucleus female pronucleus chromocenter cytoskeleton spindle microtubule cytoskeleton nuclear body chromosome, telomeric region site of DNA damage

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E, F	IPR011516	Shugoshin, N-terminal coiled-coil domain	Domain
E, F	IPR011515	Shugoshin, C-terminal	Domain
E, F	IPR038889	Shugoshin 1/2	Family
A, B, C, D	IPR023780	Chromo domain	Domain
A, B, C, D	IPR016197	Chromo-like domain superfamily	Homologous Superfamily
A, B, C, D	IPR023779	Chromo domain, conserved site	Conserved Site
A, B, C, D	IPR008251	Chromo shadow domain	Domain
A, B, C, D	IPR051219	Heterochromatin-associated chromo domain-containing protein	Family
A, B, C, D	IPR000953	Chromo/chromo shadow domain	Domain
A, B, C, D	IPR017984	Chromo domain subgroup	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
E, F	: Q5FBB7	chronic atrial and intestinal dysrhythmia Chronobiology Disorders malignant glioma ovarian cancer atypical teratoid rhabdoid tumor drug dependence large cell medulloblastoma medulloblastoma pancreatic intraductal papillary-mucinous neoplasm breast cancer intestinal disease lung adenocarcinoma non-small cell lung carcinoma psoriasis
A, B, C, D	: P83916	prostate cancer dermatomyositis lymphoplasmacytic lymphoma ovarian cancer epilepsy medulloblastoma pancreatic ductal adenocarcinoma Prostatic Neoplasms lung cancer non-small cell lung carcinoma primary hyperoxaluria type 1

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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.