1PK1

Hetero SAM domain structure of Ph and Scm.

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	d1pk1a1	All alpha proteins	SAM domain-like	SAM/Pointed domain	SAM (sterile alpha motif) domain	Polyhomeotic	fruit fly (Drosophila melanogaster ) [TaxId: 7227 ],	SCOPe (2.08)
C	d1pk1c_	All alpha proteins	SAM domain-like	SAM/Pointed domain	SAM (sterile alpha motif) domain	Polyhomeotic	fruit fly (Drosophila melanogaster ) [TaxId: 7227 ],	SCOPe (2.08)
D	d1pk1d_	All alpha proteins	SAM domain-like	SAM/Pointed domain	automated matches	automated matches	fruit fly (Drosophila melanogaster ) [TaxId: 7227 ],	SCOPe (2.08)
B	d1pk1b1	All alpha proteins	SAM domain-like	SAM/Pointed domain	SAM (sterile alpha motif) domain	Polycomb protein Scm	fruit fly (Drosophila melanogaster ) [TaxId: 7227 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	SAM/Pointed domain	8040672	3000479	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	SAM/Pointed domain	8040672	3000479	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	SAM/Pointed domain	8032290	3000479	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	SAM/Pointed domain	8032290	3000479	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	PF00536	e1pk1A1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: PF00536	ECOD (1.6)
C	PF00536	e1pk1C1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: PF00536	ECOD (1.6)
D	PF00536	e1pk1D1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: PF00536	ECOD (1.6)
B	PF00536	e1pk1B1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: PF00536	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.150.50	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)
C	1.10.150.50	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)
D	1.10.150.50	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)
B	1.10.150.50	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C	PF07647	SAM domain (Sterile alpha motif) (SAM_2)	SAM domain (Sterile alpha motif)	-	Domain
B, D	PF00536	SAM domain (Sterile alpha motif) (SAM_1)	SAM domain (Sterile alpha motif)	It has been suggested that SAM is an evolutionarily conserved protein binding domain that is involved in the regulation of numerous developmental processes in diverse eukaryotes. The SAM domain can potentially function as a protein interaction module ...	It has been suggested that SAM is an evolutionarily conserved protein binding domain that is involved in the regulation of numerous developmental processes in diverse eukaryotes. The SAM domain can potentially function as a protein interaction module through its ability to homo- and heterooligomerise with other SAM domains.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C	Polyhomeotic-proximal chromatin protein	DNA topoisomerase binding protein binding binding enzyme binding histone binding protein-containing complex binding chromatin binding sequence-specific DNA binding DNA binding organic cyclic compound binding nucleic acid binding protein-folding chaperone binding cation binding transition metal ion binding DNA topoisomerase binding protein binding binding enzyme binding histone binding protein-containing complex binding chromatin binding sequence-specific DNA binding DNA binding organic cyclic compound binding nucleic acid binding protein-folding chaperone binding cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding	regulation of cellular process negative regulation of biological process negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription regulation of RNA metabolic process organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process negative regulation of DNA-templated transcription regulation of biological process cellular metabolic process regulation of cellular process negative regulation of biological process negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription regulation of RNA metabolic process organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process negative regulation of DNA-templated transcription regulation of biological process cellular metabolic process negative regulation of metabolic process primary metabolic process regulation of cellular metabolic process negative regulation of cellular biosynthetic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process negative regulation of macromolecule biosynthetic process organic cyclic compound 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 biosynthetic process RNA metabolic process RNA biosynthetic process nucleic acid biosynthetic process organic substance metabolic process negative regulation of cellular process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process biological regulation regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process negative regulation of biosynthetic process cellular process developmental process multicellular organismal process cellular developmental process central nervous system neuron development cell development nervous system development generation of neurons central nervous system neuron differentiation multicellular organism development neurogenesis central nervous system development neuron differentiation cell differentiation neuron development anatomical structure development system development morphogenesis of follicular epithelium sexual reproduction reproductive process germarium-derived female germ-line cyst encapsulation cellular process involved in reproduction in multicellular organism developmental process involved in reproduction female gamete generation epithelial cell differentiation gamete generation follicle cell of egg chamber development epithelium development germarium-derived egg chamber formation oogenesis multicellular organismal reproductive process female germ-line cyst encapsulation morphogenesis of an epithelium germ-line cyst encapsulation tissue development anatomical structure morphogenesis tissue morphogenesis epithelial cell development anatomical structure formation involved in morphogenesis germ cell development response to organic substance response to ketone response to sterol response to ecdysone response to stimulus response to lipid response to alcohol response to chemical response to oxygen-containing compound response to organic cyclic compound follicle cell of egg chamber stalk formation cell morphogenesis mitotic nuclear division organelle fission chromosome organization sister chromatid segregation mitotic cell cycle cellular component organization organelle organization nuclear division mitotic cell cycle process mitotic sister chromatid segregation nuclear chromosome segregation cellular component organization or biogenesis cell cycle chromosome segregation cell cycle process anterior/posterior axis specification anterior/posterior pattern specification pattern specification process regionalization axis specification syncytial blastoderm mitotic cell cycle embryo development mitotic cell cycle, embryonic cell cycle comprising mitosis without cytokinesis protein-DNA complex organization chromatin organization chromatin remodeling heterochromatin formation protein-containing complex organization epigenetic regulation of gene expression negative regulation of gene expression negative regulation of gene expression, epigenetic transcription by RNA polymerase II regulation of transcription by RNA polymerase II	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen non-membrane-bounded organelle membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen non-membrane-bounded organelle polytene chromosome chromosome protein-containing complex PRC1 complex ubiquitin ligase complex catalytic complex nuclear protein-containing complex transferase complex PcG protein complex nuclear ubiquitin ligase complex intracellular protein-containing complex
B, D	Sex comb on midleg CG9495-PA	protein binding binding histone binding protein-containing complex binding chromatin binding PRC1 complex binding sequence-specific DNA binding DNA binding organic cyclic compound binding nucleic acid binding cation binding transition metal ion binding zinc ion binding ion binding protein binding binding histone binding protein-containing complex binding chromatin binding PRC1 complex binding sequence-specific DNA binding DNA binding organic cyclic compound binding nucleic acid binding cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding identical protein binding	regulation of cellular process negative regulation of biological process negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription regulation of RNA metabolic process organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process negative regulation of DNA-templated transcription regulation of biological process cellular metabolic process regulation of cellular process negative regulation of biological process negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription regulation of RNA metabolic process organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process negative regulation of DNA-templated transcription regulation of biological process cellular metabolic process negative regulation of metabolic process primary metabolic process regulation of cellular metabolic process negative regulation of cellular biosynthetic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process negative regulation of macromolecule biosynthetic process organic cyclic compound 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 biosynthetic process RNA metabolic process RNA biosynthetic process nucleic acid biosynthetic process organic substance metabolic process negative regulation of cellular process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process biological regulation regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process negative regulation of biosynthetic process cellular process morphogenesis of follicular epithelium sexual reproduction cellular developmental process reproductive process germarium-derived female germ-line cyst encapsulation cell development cellular process involved in reproduction in multicellular organism developmental process involved in reproduction female gamete generation epithelial cell differentiation gamete generation follicle cell of egg chamber development cell differentiation anatomical structure development developmental process epithelium development germarium-derived egg chamber formation oogenesis multicellular organismal reproductive process female germ-line cyst encapsulation morphogenesis of an epithelium germ-line cyst encapsulation tissue development anatomical structure morphogenesis tissue morphogenesis epithelial cell development anatomical structure formation involved in morphogenesis germ cell development neurogenesis multicellular organism development multicellular organismal process nervous system development system development follicle cell of egg chamber stalk formation cell morphogenesis axonogenesis cell projection organization plasma membrane bounded cell projection morphogenesis neuron projection development cellular component organization cell projection morphogenesis neuron differentiation neuron projection morphogenesis cellular component organization or biogenesis plasma membrane bounded cell projection organization axon development cell morphogenesis involved in neuron differentiation generation of neurons neuron development anterior/posterior axis specification anterior/posterior pattern specification pattern specification process regionalization axis specification protein-DNA complex organization chromatin organization chromatin remodeling heterochromatin formation protein-containing complex organization epigenetic regulation of gene expression negative regulation of gene expression negative regulation of gene expression, epigenetic sensory organ development eye development animal organ development visual system development compound eye development sensory system development transcription by RNA polymerase II regulation of transcription by RNA polymerase II central nervous system development ventral cord development regulation of growth negative regulation of growth growth	intracellular organelle intracellular anatomical structure organelle intracellular non-membrane-bounded organelle polytene chromosome chromosome cellular anatomical entity non-membrane-bounded organelle membrane-bounded organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C	IPR012313	Zinc finger, FCS-type	Domain
A, C	IPR038603	FCS-type zinc finger superfamily	Homologous Superfamily
A, C	IPR013761	Sterile alpha motif/pointed domain superfamily	Homologous Superfamily
A, C	IPR001660	Sterile alpha motif domain	Domain
B, D	IPR038348	SLED domain superfamily	Homologous Superfamily
B, D	IPR004092	Mbt repeat	Repeat
B, D	IPR021987	SLED domain	Domain
B, D	IPR012313	Zinc finger, FCS-type	Domain
B, D	IPR047531	Sex comb on midleg-like, SAM domain	Domain
B, D	IPR010507	Zinc finger, MYM-type	Domain
B, D	IPR013761	Sterile alpha motif/pointed domain superfamily	Homologous Superfamily
B, D	IPR001660	Sterile alpha motif domain	Domain

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.