7MLU | pdb_00007mlu

Cryo-EM reveals partially and fully assembled native glycine receptors,homomeric pentamer

External Resource: Annotation

Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
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)
L [auth E]		e7mluE1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)
M [auth D]		e7mluD1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)
N [auth B]		e7mluB1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)
O [auth C]		e7mluC1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)
K [auth A]		e7mluA1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)
F [auth N]		e7mluN1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)
J [auth H]		e7mluH1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)
H [auth L]		e7mluL1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)
D [auth G]		e7mluG1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)
B [auth F]		e7mluF1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)
A [auth K]		e7mluK1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)
G [auth M]		e7mluM1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)
I		e7mluI1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)
E [auth O]		e7mluO1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)
C [auth J]		e7mluJ1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Utp12	F:	ECOD (20:10:01)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth F], D [auth G], F [auth N], H [auth L], J [auth H]	Heavy Chain	IGHV1	-	glycine receptor alpha 1	SAbDab (2026-03-13)
A [auth K], C [auth J], E [auth O], G [auth M], I	Light Chain	IGKV6	Kappa	glycine receptor alpha 1	SAbDab (2026-03-13)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	PF02932	Neurotransmitter-gated ion-channel transmembrane region (Neur_chan_memb)	Neurotransmitter-gated ion-channel transmembrane region	-	Family
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	PF02931	Neurotransmitter-gated ion-channel ligand binding domain (Neur_chan_LBD)	Neurotransmitter-gated ion-channel ligand binding domain	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	Glycine receptor alpha 1	ligand-gated channel activity ligand-gated monoatomic ion channel activity passive transmembrane transporter activity gated channel activity ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity inhibitory extracellular ligand-gated monoatomic ion channel activity excitatory extracellular ligand-gated monoatomic ion channel activity ligand-gated channel activity ligand-gated monoatomic ion channel activity passive transmembrane transporter activity gated channel activity ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity inhibitory extracellular ligand-gated monoatomic ion channel activity excitatory extracellular ligand-gated monoatomic ion channel activity ligand-gated monoatomic anion channel activity extracellular ligand-gated monoatomic ion channel activity extracellularly glycine-gated ion channel activity monoatomic anion channel activity extracellularly glycine-gated chloride channel activity chloride channel activity binding organic acid binding ion binding anion binding alkanesulfonate binding taurine binding sulfur compound binding small molecule binding cation binding glycine binding amino acid binding carboxylic acid binding transmitter-gated monoatomic ion channel activity molecular transducer activity transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential signaling receptor activity neurotransmitter receptor activity transmitter-gated channel activity transition metal ion binding zinc ion binding metal ion binding transmembrane signaling receptor activity	cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell communication G protein-coupled receptor signaling pathway cellular process signal transduction neuropeptide signaling pathway multicellular organismal process system process negative regulation of nervous system process cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell communication G protein-coupled receptor signaling pathway cellular process signal transduction neuropeptide signaling pathway multicellular organismal process system process negative regulation of nervous system process nervous system process regulation of system process negative regulation of biological process transmission of nerve impulse negative regulation of transmission of nerve impulse negative regulation of cell communication regulation of nervous system process regulation of transmission of nerve impulse negative regulation of cellular process regulation of cell communication regulation of multicellular organismal process negative regulation of multicellular organismal process trans-synaptic signaling cell-cell signaling synaptic transmission, glycinergic chemical synaptic transmission synaptic signaling anterograde trans-synaptic signaling transport monoatomic ion transmembrane transport establishment of localization chloride transport transmembrane transport localization chloride transmembrane transport monoatomic anion transport monoatomic anion transmembrane transport monoatomic ion transport inorganic anion transport reflex response to external stimulus righting reflex respiratory gaseous exchange by respiratory system respiratory system process regulation of respiratory gaseous exchange regulation of respiratory system process regulation of respiratory gaseous exchange by nervous system process action potential neuronal action potential regulation of biological quality regulation of membrane potential startle response neuromuscular process sexual reproduction regulation of reproductive process reproductive process fertilization positive regulation of biological process positive regulation of acrosome reaction acrosome reaction regulation of acrosome reaction single fertilization positive regulation of reproductive process cellular response to acid chemical cellular response to amino acid stimulus response to acid chemical cellular response to chemical stimulus response to chemical response to amino acid response to alcohol response to oxygen-containing compound cellular response to oxygen-containing compound cellular response to alcohol cellular response to ethanol response to ethanol cellular response to metal ion response to metal ion response to zinc ion cellular response to zinc ion regulation of postsynaptic membrane potential chemical synaptic transmission, postsynaptic cell surface receptor signaling pathway inhibitory postsynaptic potential sensory perception of light stimulus sensory perception visual perception neuromuscular process controlling posture muscle contraction muscle system process adult walking behavior adult locomotory behavior behavior adult behavior locomotory behavior walking behavior	protein-containing complex cellular anatomical structure transmembrane transporter complex membrane chloride channel complex membrane protein complex transporter complex monoatomic ion channel complex cell periphery postsynapse postsynaptic membrane synapse cell junction plasma membrane protein-containing complex cellular anatomical structure transmembrane transporter complex membrane chloride channel complex membrane protein complex transporter complex monoatomic ion channel complex cell periphery postsynapse postsynaptic membrane synapse cell junction plasma membrane plasma membrane region synaptic membrane somatodendritic compartment cell body perikaryon neuronal cell body cell surface external side of plasma membrane side of membrane glycinergic synapse cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection inhibitory synapse
B [auth F], D [auth G], F [auth N], H [auth L], J [auth H]	3D1 Fab Heavy Chain	-	-	-
A [auth K], C [auth J], E [auth O], G [auth M], I	3D1 Fab Light Chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	IPR006202	Neurotransmitter-gated ion-channel ligand-binding domain	Domain
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	IPR036719	Neurotransmitter-gated ion-channel transmembrane domain superfamily	Homologous Superfamily
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	IPR006028	Gamma-aminobutyric acid A receptor/Glycine receptor alpha	Family
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	IPR008127	Glycine receptor alpha	Family
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	IPR006029	Neurotransmitter-gated ion-channel transmembrane domain	Domain
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	IPR036734	Neurotransmitter-gated ion-channel ligand-binding domain superfamily	Homologous Superfamily
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	IPR018000	Neurotransmitter-gated ion-channel, conserved site	Conserved Site
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	IPR038050	Neuronal acetylcholine receptor	Homologous Superfamily
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	IPR008128	Glycine receptor alpha1	Family
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	IPR006201	Neurotransmitter-gated ion-channel	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	OPM	Transmembrane	Alpha-helical polytopic	Pentameric ligand-gated ion channels	Ligand-gated ion channel of neurotransmitter receptors

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
K [auth A], L [auth E], M [auth D], N [auth B], O [auth C]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Cys-Loop Receptor Family	Glycine receptor (GlyR-α1) homomeric pentamer

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.