6NBF

Cryo-EM structure of parathyroid hormone receptor type 1 in complex with a long-acting parathyroid hormone analog and G protein

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth R]	SCOP2B Superfamily	G protein-coupled receptor-like	8091124	3000473	SCOP2B (2022-06-29)
A [auth R]	SCOP2B Superfamily	G protein-coupled receptor-like	8091124	3000473	SCOP2B (2022-06-29)
C [auth A]	SCOP2B Superfamily	Ras-like P-loop GTPases	8056791	3002022	SCOP2B (2022-06-29)
E [auth G]	SCOP2B Superfamily	Transducin (heterotrimeric G protein), gamma chain	8070796	3001771	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 [auth R]	7tm_2	e6nbfR1	A: alpha bundles	X: Family A G protein-coupled receptor-like (From Topology)	H: Family A G protein-coupled receptor-like (From Topology)	T: Family A G protein-coupled receptor-like	F: 7tm_2	ECOD (1.6)
A [auth R]	HRM	e6nbfR2	A: few secondary structure elements	X: Hormone receptor domain (HRM, Pfam 02793) (From Topology)	H: Hormone receptor domain (HRM, Pfam 02793) (From Topology)	T: Hormone receptor domain (HRM, Pfam 02793)	F: HRM	ECOD (1.6)
D [auth B]	ANAPC4_WD40_3	e6nbfB1	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-propeller	T: 7-bladed	F: ANAPC4_WD40_3	ECOD (1.6)
E [auth G]	G-gamma	e6nbfG1	A: extended segments	X: Transducin (heterotrimeric G protein), gamma chain (From Topology)	H: Transducin (heterotrimeric G protein), gamma chain (From Topology)	T: Transducin (heterotrimeric G protein), gamma chain	F: G-gamma	ECOD (1.6)
F [auth N]	V-set_12	e6nbfN1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_12	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth A]	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (utative)
D [auth B]	2.130.10.10	Mainly Beta	7 Propeller	Methylamine Dehydrogenase	Chain H	CATH (utative)
E [auth G]	4.10.260.10	Few Secondary Structures	Irregular	G Protein Gi Gamma 2	Transducin (heterotrimeric G protein), gamma chain	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
F [auth N]	Heavy Chain	IGHV3	-	gs protein alpha subunit \| guanine nucleotide-binding protein g(i)/g(s)/g(t) subunitbeta-1	SAbDab (2024-10-25)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth R]	PF02793	Hormone receptor domain (HRM)	Hormone receptor domain	-	Family
A [auth R]	PF00002	7 transmembrane receptor (Secretin family) (7tm_2)	7 transmembrane receptor (Secretin family)	-	Family
C [auth A]	PF00503	G-protein alpha subunit (G-alpha)	G-protein alpha subunit	G proteins couple receptors of extracellular signals to intracellular signaling pathways. The G protein alpha subunit binds guanyl nucleotide and is a weak GTPase. A set of residues that are unique to G-alpha as compared to its ancestor the Arf-like ...	G proteins couple receptors of extracellular signals to intracellular signaling pathways. The G protein alpha subunit binds guanyl nucleotide and is a weak GTPase. A set of residues that are unique to G-alpha as compared to its ancestor the Arf-like family form a ring of residues centered on the nucleotide binding site [3]. A Ggamma is found fused to an inactive Galpha in the Dictyostelium protein gbqA [3].	Domain
D [auth B]	PF00400	WD domain, G-beta repeat (WD40)	WD domain, G-beta repeat	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth R]	Parathyroid hormone/parathyroid hormone-related peptide receptor	identical protein binding protein binding binding protein homodimerization activity protein dimerization activity amide binding peptide hormone binding hormone binding peptide receptor activity molecular transducer activity G protein-coupled receptor activity G protein-coupled peptide receptor activity transmembrane signaling receptor activity signaling receptor activity identical protein binding protein binding binding protein homodimerization activity protein dimerization activity amide binding peptide hormone binding hormone binding peptide receptor activity molecular transducer activity G protein-coupled receptor activity G protein-coupled peptide receptor activity transmembrane signaling receptor activity signaling receptor activity parathyroid hormone receptor activity	developmental process multicellular organismal process ossification bone mineralization animal organ development anatomical structure development biomineral tissue development tissue development multicellular organism development skeletal system development system development cell population proliferation cellular process cellular response to stimulus developmental process multicellular organismal process ossification bone mineralization animal organ development anatomical structure development biomineral tissue development tissue development multicellular organism development skeletal system development system development cell population proliferation cellular process cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell communication adenylate cyclase-modulating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway signal transduction inorganic ion homeostasis intracellular calcium ion homeostasis homeostatic process calcium ion homeostasis cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis osteoblast development cellular developmental process cell differentiation cell development osteoblast differentiation embryo development ending in birth or egg hatching chordate embryonic development embryo development in utero embryonic development anatomical structure maturation cell maturation developmental maturation adenylate cyclase-activating G protein-coupled receptor signaling pathway positive regulation of cell population proliferation regulation of cell population proliferation positive regulation of biological process positive regulation of cellular process cell surface receptor signaling pathway negative regulation of cell population proliferation negative regulation of cellular process negative regulation of biological process phospholipase C-activating G protein-coupled receptor signaling pathway connective tissue development chondrocyte differentiation cartilage development regulation of inositol phosphate biosynthetic process positive regulation of phosphate metabolic process regulation of primary metabolic process positive regulation of metabolic process regulation of small molecule metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process polyol biosynthetic process small molecule metabolic process phosphorus metabolic process polyol metabolic process positive regulation of phosphorus metabolic process regulation of alcohol biosynthetic process cellular metabolic process carbohydrate biosynthetic process regulation of cellular metabolic process primary metabolic process positive regulation of inositol phosphate biosynthetic process biosynthetic process organophosphate biosynthetic process inositol phosphate biosynthetic process regulation of phosphorus metabolic process metabolic process positive regulation of carbohydrate metabolic process regulation of metabolic process cellular biosynthetic process organic hydroxy compound metabolic process positive regulation of cellular metabolic process alcohol metabolic process inositol phosphate metabolic process positive regulation of biosynthetic process regulation of carbohydrate metabolic process regulation of biosynthetic process carbohydrate metabolic process small molecule biosynthetic process regulation of cellular biosynthetic process organophosphate metabolic process organic hydroxy compound biosynthetic process alcohol biosynthetic process regulation of carbohydrate biosynthetic process positive regulation of small molecule metabolic process positive regulation of alcohol biosynthetic process positive regulation of cellular biosynthetic process multicellular organismal-level homeostasis tissue remodeling bone remodeling anatomical structure homeostasis tissue homeostasis bone resorption G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger	cell periphery apical part of cell membrane plasma membrane plasma membrane region cellular anatomical entity apical plasma membrane basal part of cell basal plasma membrane basolateral plasma membrane intracellular anatomical structure cytoplasm protein-containing complex receptor complex cell periphery apical part of cell membrane plasma membrane plasma membrane region cellular anatomical entity apical plasma membrane basal part of cell basal plasma membrane basolateral plasma membrane intracellular anatomical structure cytoplasm protein-containing complex receptor complex membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle
B [auth P]	Long-acting parathyroid hormone analog	-	-	-
C [auth A]	Gs protein alpha subunit	peptide hormone receptor binding protein binding binding corticotropin-releasing hormone receptor binding signaling receptor binding G protein-coupled receptor binding corticotropin-releasing hormone receptor 1 binding hormone receptor binding neuropeptide receptor binding mu-type opioid receptor binding opioid receptor binding beta-2 adrenergic receptor binding adrenergic receptor binding D1 dopamine receptor binding peptide hormone receptor binding protein binding binding corticotropin-releasing hormone receptor binding signaling receptor binding G protein-coupled receptor binding corticotropin-releasing hormone receptor 1 binding hormone receptor binding neuropeptide receptor binding mu-type opioid receptor binding opioid receptor binding beta-2 adrenergic receptor binding adrenergic receptor binding D1 dopamine receptor binding dopamine receptor binding protein-containing complex binding G-protein beta/gamma-subunit complex binding ionotropic glutamate receptor binding glutamate receptor binding enzyme regulator activity cyclase regulator activity enzyme activator activity cyclase activator activity molecular function activator activity molecular function regulator activity adenylate cyclase regulator activity adenylate cyclase activator activity guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding organic cyclic compound binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding cation binding metal ion binding pyrophosphatase activity GTPase activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity insulin-like growth factor receptor binding magnesium ion binding GDP binding G protein-coupled serotonin receptor binding	cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation adenylate cyclase-activating G protein-coupled receptor signaling pathway cell communication adenylate cyclase-modulating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway cellular process signal transduction adenylate cyclase-activating adrenergic receptor signaling pathway adrenergic receptor signaling pathway cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation adenylate cyclase-activating G protein-coupled receptor signaling pathway cell communication adenylate cyclase-modulating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway cellular process signal transduction adenylate cyclase-activating adrenergic receptor signaling pathway adrenergic receptor signaling pathway multicellular organismal process system process sensory perception of chemical stimulus sensory perception nervous system process cellular response to nitrogen compound response to dopamine cellular response to dopamine response to monoamine response to catecholamine adenylate cyclase-activating dopamine receptor signaling pathway cellular response to catecholamine stimulus response to organic cyclic compound G protein-coupled dopamine receptor signaling pathway cellular response to organic cyclic compound response to oxygen-containing compound response to nitrogen compound cellular response to oxygen-containing compound cellular response to chemical stimulus cellular response to monoamine stimulus response to chemical cell division regulation of cytoskeleton organization regulation of cellular component organization microtubule cytoskeleton organization regulation of mitotic spindle organization mitotic cell cycle cellular component organization cell cycle cellular component organization or biogenesis regulation of cell cycle microtubule cytoskeleton organization involved in mitosis spindle organization cell cycle process regulation of cell cycle process regulation of microtubule-based process regulation of spindle organization regulation of organelle organization mitotic spindle organization organelle organization mitotic cell cycle process microtubule-based process cytoskeleton organization regulation of microtubule cytoskeleton organization protein localization positive regulation of protein localization to cell periphery regulation of localization protein localization to cell periphery cellular localization regulation of protein localization positive regulation of biological process positive regulation of protein localization to cell cortex regulation of protein localization to cell periphery localization regulation of cellular localization regulation of protein localization to cell cortex cellular macromolecule localization macromolecule localization positive regulation of protein localization protein localization to cell cortex positive regulation of cellular process regulation of signaling regulation of signal transduction intracellular signal transduction cAMP-mediated signaling regulation of intracellular signal transduction regulation of response to stimulus intracellular signaling cassette regulation of cell communication regulation of cAMP-mediated signaling response to ketone response to lipid response to alcohol cellular response to forskolin cellular response to alcohol response to forskolin cellular response to lipid cellular response to ketone	protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane membrane plasma membrane membrane protein complex cellular anatomical entity heterotrimeric G-protein complex side of membrane cell periphery cytoplasmic side of plasma membrane GTPase complex protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane membrane plasma membrane membrane protein complex cellular anatomical entity heterotrimeric G-protein complex side of membrane cell periphery cytoplasmic side of plasma membrane GTPase complex extrinsic component of membrane extrinsic component of cytoplasmic side of plasma membrane intracellular anatomical structure cytoplasm midbody cell cortex intracellular organelle centrosome microtubule organizing center cytoskeleton organelle intracellular non-membrane-bounded organelle microtubule cytoskeleton non-membrane-bounded organelle membrane-bounded organelle nucleus intracellular membrane-bounded organelle
D [auth B]	Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	cytoskeletal protein binding spectrin binding protein-containing complex binding protein binding binding enzyme binding GTPase binding phosphoric ester hydrolase activity alkylglycerophosphoethanolamine phosphodiesterase activity hydrolase activity, acting on ester bonds phosphoric diester hydrolase activity hydrolase activity catalytic activity pyrophosphatase activity cytoskeletal protein binding spectrin binding protein-containing complex binding protein binding binding enzyme binding GTPase binding phosphoric ester hydrolase activity alkylglycerophosphoethanolamine phosphodiesterase activity hydrolase activity, acting on ester bonds phosphoric diester hydrolase activity hydrolase activity catalytic activity pyrophosphatase activity GTPase activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity, acting on acid anhydrides signaling receptor complex adaptor activity protein-macromolecule adaptor activity molecular adaptor activity signaling adaptor activity	positive regulation of cytosolic calcium ion concentration biological regulation regulation of biological quality multicellular organismal process system process sensory perception of chemical stimulus sensory perception nervous system process sensory perception of taste developmental process sensory organ development eye development animal organ development retina development in camera-type eye positive regulation of cytosolic calcium ion concentration biological regulation regulation of biological quality multicellular organismal process system process sensory perception of chemical stimulus sensory perception nervous system process sensory perception of taste developmental process sensory organ development eye development animal organ development retina development in camera-type eye visual system development multicellular organism development camera-type eye development anatomical structure development sensory system development system development response to decreased oxygen levels cellular response to stimulus response to stimulus cellular response to oxygen levels cellular response to hypoxia cellular response to decreased oxygen levels cellular response to chemical stimulus cellular response to stress response to hypoxia response to stress response to chemical response to oxygen levels response to abiotic stimulus cellular process cell population proliferation regulation of biological process regulation of cellular process signaling phospholipase C-activating G protein-coupled receptor signaling pathway cell communication G protein-coupled receptor signaling pathway signal transduction muscle cell apoptotic process striated muscle cell apoptotic process apoptotic process cell death programmed cell death cardiac muscle cell apoptotic process	protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane membrane plasma membrane membrane protein complex cellular anatomical entity heterotrimeric G-protein complex side of membrane cell periphery cytoplasmic side of plasma membrane GTPase complex protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane membrane plasma membrane membrane protein complex cellular anatomical entity heterotrimeric G-protein complex side of membrane cell periphery cytoplasmic side of plasma membrane GTPase complex extrinsic component of membrane extrinsic component of cytoplasmic side of plasma membrane photoreceptor inner segment somatodendritic compartment cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection intracellular anatomical structure cytoplasm membrane-bounded organelle non-motile cilium 9+0 non-motile cilium cilium photoreceptor outer segment photoreceptor cell cilium organelle ciliary membrane photoreceptor outer segment membrane bounding membrane of organelle plasma membrane region organelle membrane cell projection membrane synapse cell junction cell body
E [auth G]	Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	protein binding binding G-protein beta-subunit binding pyrophosphatase activity GTPase activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity	cellular response to nitrogen compound cellular response to stimulus response to dopamine regulation of cellular process response to stimulus signaling cellular response to dopamine response to monoamine cell communication response to catecholamine adenylate cyclase-activating dopamine receptor signaling pathway cellular response to catecholamine stimulus signal transduction response to organic cyclic compound cellular response to nitrogen compound cellular response to stimulus response to dopamine regulation of cellular process response to stimulus signaling cellular response to dopamine response to monoamine cell communication response to catecholamine adenylate cyclase-activating dopamine receptor signaling pathway cellular response to catecholamine stimulus signal transduction response to organic cyclic compound regulation of biological process G protein-coupled dopamine receptor signaling pathway cellular response to organic cyclic compound biological regulation response to oxygen-containing compound response to nitrogen compound adenylate cyclase-activating G protein-coupled receptor signaling pathway cellular response to oxygen-containing compound cellular response to chemical stimulus cellular response to monoamine stimulus response to chemical adenylate cyclase-modulating G protein-coupled receptor signaling pathway cellular process G protein-coupled receptor signaling pathway response to ketone response to prostaglandin response to lipid response to endogenous stimulus response to alcohol cellular response to prostaglandin stimulus cellular response to endogenous stimulus cellular response to prostaglandin E stimulus cellular response to alcohol response to hormone cellular response to lipid response to prostaglandin E cellular response to ketone cellular response to hormone stimulus	cell periphery plasma membrane membrane cellular anatomical entity protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane membrane protein complex heterotrimeric G-protein complex side of membrane cytoplasmic side of plasma membrane GTPase complex cell periphery plasma membrane membrane cellular anatomical entity protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane membrane protein complex heterotrimeric G-protein complex side of membrane cytoplasmic side of plasma membrane GTPase complex extrinsic component of membrane extrinsic component of cytoplasmic side of plasma membrane
F [auth N]	Nanobody-35	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth R]	IPR017983	GPCR, family 2, secretin-like, conserved site	Conserved Site
A [auth R]	IPR050332	G-protein coupled receptor 2	Family
A [auth R]	IPR036445	GPCR family 2, extracellular hormone receptor domain superfamily	Homologous Superfamily
A [auth R]	IPR002170	GPCR, family 2, parathyroid hormone receptor	Family
A [auth R]	IPR000832	GPCR, family 2, secretin-like	Family
A [auth R]	IPR017981	GPCR, family 2-like, 7TM	Domain
A [auth R]	IPR001879	GPCR, family 2, extracellular hormone receptor domain	Domain
C [auth A]	IPR001019	Guanine nucleotide binding protein (G-protein), alpha subunit	Family
C [auth A]	IPR000367	G-protein alpha subunit, group S	Family
C [auth A]	IPR011025	G protein alpha subunit, helical insertion	Homologous Superfamily
C [auth A]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
C [auth A]	IPR001019	Guanine nucleotide binding protein (G-protein), alpha subunit	Family
C [auth A]	IPR011025	G protein alpha subunit, helical insertion	Homologous Superfamily
C [auth A]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
C [auth A]	IPR001408	G-protein alpha subunit, group I	Family
D [auth B]	IPR019775	WD40 repeat, conserved site	Conserved Site
D [auth B]	IPR015943	WD40/YVTN repeat-like-containing domain superfamily	Homologous Superfamily
D [auth B]	IPR016346	Guanine nucleotide-binding protein, beta subunit	Family
D [auth B]	IPR036322	WD40-repeat-containing domain superfamily	Homologous Superfamily
D [auth B]	IPR001632	G-protein, beta subunit	Domain
D [auth B]	IPR001680	WD40 repeat	Repeat
D [auth B]	IPR020472	G-protein beta WD-40 repeat	Repeat
E [auth G]	IPR036284	G-protein gamma-like domain superfamily	Homologous Superfamily
E [auth G]	IPR015898	G-protein gamma-like domain	Domain
E [auth G]	IPR001770	G-protein, gamma subunit	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth R]	Pharos: Q03431	Eiken syndrome metaphyseal chondrodysplasia, Jansen type rickets chondrodysplasia Blomstrand type Ollier disease primary failure of tooth eruption hyperparathyroidism medulloblastoma osteogenesis imperfecta psoriasis adrenal cortex adenoma breast carcinoma Glucocorticoid Induced Osteoporosis large cell medulloblastoma malignant glioma Eiken syndrome metaphyseal chondrodysplasia, Jansen type rickets chondrodysplasia Blomstrand type Ollier disease primary failure of tooth eruption hyperparathyroidism medulloblastoma osteogenesis imperfecta psoriasis adrenal cortex adenoma breast carcinoma Glucocorticoid Induced Osteoporosis large cell medulloblastoma malignant glioma postmenopausal osteoporosis adrenal cortex carcinoma hepatocellular carcinoma hypoparathyroidism lung disease malignant mesothelioma tooth ankylosis glioblastoma intellectual disability

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A [auth R], C [auth A], E [auth G]	OPM	Transmembrane	Alpha-helical polytopic	Rhodopsin-like receptors and pumps	GPCR Secretin (B) family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A [auth R], C [auth A], E [auth G]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A [auth R], C [auth A], E [auth G]	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A [auth R], C [auth A], E [auth G]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	G Protein-Coupled Receptors: Class B1	parathyroid hormone receptor-1 (PTH1R) in complex with a parathyroid hormone analog and G protein, state 1