Annotations: 8W4E

Crystal structure of the sigma-1 receptor from Xenopus laevis in the absence of known ligands (C2 form)

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F	V-set	e8w4eF1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: V-set	ECOD (v295.2)
E	V-set	e8w4eE1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: V-set	ECOD (v295.2)
D	V-set	e8w4eD1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: V-set	ECOD (v295.2)
C	V-set	e8w4eC1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: V-set	ECOD (v295.2)
B	V-set	e8w4eB1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: V-set	ECOD (v295.2)
A	V-set	e8w4eA1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: V-set	ECOD (v295.2)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F	PF04622	ERG2 and Sigma1 receptor like protein (ERG2_Sigma1R)	ERG2 and Sigma1 receptor like protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F	Sigma non-opioid intracellular receptor 1	molecular transducer activity signaling receptor activity	regulation of biological process neuron apoptotic process regulation of cellular process regulation of apoptotic process biological regulation regulation of programmed cell death cell death cellular process apoptotic process programmed cell death regulation of neuron apoptotic process cellular response to stimulus response to stimulus regulation of cellular response to stress regulation of biological process neuron apoptotic process regulation of cellular process regulation of apoptotic process biological regulation regulation of programmed cell death cell death cellular process apoptotic process programmed cell death regulation of neuron apoptotic process cellular response to stimulus response to stimulus regulation of cellular response to stress regulation of response to endoplasmic reticulum stress cellular response to stress regulation of response to stimulus regulation of response to stress response to stress response to endoplasmic reticulum stress	postsynaptic density postsynapse cellular anatomical structure neuron to neuron synapse postsynaptic specialization organelle synapse cell junction asymmetric synapse membrane-bounded organelle intracellular organelle intracellular anatomical structure cytoplasmic vesicle intracellular vesicle postsynaptic density postsynapse cellular anatomical structure neuron to neuron synapse postsynaptic specialization organelle synapse cell junction asymmetric synapse membrane-bounded organelle intracellular organelle intracellular anatomical structure cytoplasmic vesicle intracellular vesicle cytoplasm intracellular membrane-bounded organelle vesicle organelle inner membrane nuclear membrane membrane nucleus endomembrane system organelle envelope nuclear inner membrane nuclear envelope organelle membrane nuclear outer membrane organelle outer membrane bounding membrane of organelle nuclear outer membrane-endoplasmic reticulum membrane network outer membrane endoplasmic reticulum organelle subcompartment endoplasmic reticulum subcompartment endoplasmic reticulum membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F	IPR006716	ERG2/sigma1 receptor-like	Family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D, E A, B, C, D, E, F	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Novel Receptors	Sigma-1 (σ1) receptor complexed with progesterone by co-crstayllization, I432 space group