Annotations: 7AD3

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E [auth F]	PF00400	e7ad3F1	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-propeller	T: 7-bladed	F: PF00400	ECOD (1.6)
F [auth E]	PF00503	e7ad3E1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: PF00503	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth B], B [auth A]	PF02116	Fungal pheromone mating factor STE2 GPCR (STE2)	Fungal pheromone mating factor STE2 GPCR	-	Family
C [auth K], D [auth I]	PF04648	Yeast mating factor alpha hormone (MF_alpha)	Yeast mating factor alpha hormone	-	Family
E [auth F]	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 B], B [auth A]	Pheromone alpha factor receptor	pheromone binding binding odorant binding peptide pheromone receptor activity peptide receptor activity molecular transducer activity mating-type factor pheromone receptor activity G protein-coupled receptor activity transmembrane signaling receptor activity signaling receptor activity G protein-coupled peptide receptor activity mating-type alpha-factor pheromone receptor activity pheromone receptor activity	cellular response to stimulus response to organic substance regulation of cellular process sexual reproduction response to stimulus signaling regulation of reproductive process reproductive process positive regulation of biological process regulation of conjugation with cellular fusion response to pheromone cellular response to pheromone cell communication positive regulation of conjugation with cellular fusion cellular response to stimulus response to organic substance regulation of cellular process sexual reproduction response to stimulus signaling regulation of reproductive process reproductive process positive regulation of biological process regulation of conjugation with cellular fusion response to pheromone cellular response to pheromone cell communication positive regulation of conjugation with cellular fusion cellular response to organic substance signal transduction positive regulation of reproductive process pheromone-dependent signal transduction involved in conjugation with cellular fusion regulation of biological process signal transduction involved in positive regulation of conjugation with cellular fusion biological regulation conjugation with cellular fusion response to pheromone triggering conjugation with cellular fusion cellular response to chemical stimulus response to chemical cellular process reproductive process in single-celled organism cytogamy	cell periphery plasma membrane membrane cellular anatomical entity G protein-coupled receptor homodimeric complex protein-containing complex plasma membrane protein complex membrane protein complex receptor complex G protein-coupled receptor dimeric complex plasma membrane signaling receptor complex G protein-coupled receptor complex
C [auth K], D [auth I]	Alpha-factor mating pheromone	cation binding cupric ion binding transition metal ion binding copper ion binding ion binding binding metal ion binding small molecule binding pheromone activity protein binding molecular function activator activity signaling receptor binding mating pheromone activity molecular function regulator activity cation binding cupric ion binding transition metal ion binding copper ion binding ion binding binding metal ion binding small molecule binding pheromone activity protein binding molecular function activator activity signaling receptor binding mating pheromone activity molecular function regulator activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity	sexual reproduction reproductive process mating multi-organism reproductive process cellular response to stimulus response to organic substance regulation of cellular process response to stimulus signaling regulation of reproductive process positive regulation of biological process regulation of conjugation with cellular fusion response to pheromone cellular response to pheromone sexual reproduction reproductive process mating multi-organism reproductive process cellular response to stimulus response to organic substance regulation of cellular process response to stimulus signaling regulation of reproductive process positive regulation of biological process regulation of conjugation with cellular fusion response to pheromone cellular response to pheromone cell communication positive regulation of conjugation with cellular fusion cellular response to organic substance signal transduction positive regulation of reproductive process pheromone-dependent signal transduction involved in conjugation with cellular fusion regulation of biological process signal transduction involved in positive regulation of conjugation with cellular fusion biological regulation conjugation with cellular fusion response to pheromone triggering conjugation with cellular fusion cellular response to chemical stimulus response to chemical cellular process	extracellular region cellular anatomical entity
E [auth F]	STE4 isoform 1	protein binding binding G-protein gamma-subunit binding small GTPase binding enzyme binding GTPase binding scaffold protein binding kinase binding protein kinase binding G-protein alpha-subunit binding signaling receptor complex adaptor activity protein-macromolecule adaptor activity molecular adaptor activity signaling adaptor activity	cellular response to stimulus response to organic substance regulation of cellular process response to stimulus sexual reproduction signaling regulation of reproductive process reproductive process positive regulation of biological process regulation of conjugation with cellular fusion regulation of signal transduction response to pheromone cell communication cellular response to pheromone positive regulation of conjugation with cellular fusion cellular response to stimulus response to organic substance regulation of cellular process response to stimulus sexual reproduction signaling regulation of reproductive process reproductive process positive regulation of biological process regulation of conjugation with cellular fusion regulation of signal transduction response to pheromone cell communication cellular response to pheromone positive regulation of conjugation with cellular fusion signal transduction cellular response to organic substance positive regulation of reproductive process pheromone-dependent signal transduction involved in conjugation with cellular fusion regulation of biological process regulation of signaling regulation of signal transduction involved in conjugation with cellular fusion signal transduction involved in positive regulation of conjugation with cellular fusion biological regulation conjugation with cellular fusion response to pheromone triggering conjugation with cellular fusion cellular response to chemical stimulus regulation of response to stimulus regulation of pheromone-dependent signal transduction involved in conjugation with cellular fusion response to chemical regulation of cell communication cellular process invasive growth in response to glucose limitation growth invasive filamentous growth growth of unicellular organism as a thread of attached cells filamentous growth filamentous growth of a population of unicellular organisms protein localization localization cellular localization protein localization to cell tip protein localization to mating projection tip cellular macromolecule localization macromolecule localization chemotropism tropism response to external stimulus establishment of protein localization protein localization to cell periphery establishment of protein localization to membrane protein localization to plasma membrane establishment of protein localization to plasma membrane localization within membrane protein localization to membrane establishment of localization G protein-coupled receptor signaling pathway	cell projection mating projection cellular anatomical entity plasma membrane bounded cell projection cell periphery cell cortex intracellular anatomical structure cytoplasm protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane membrane cell projection mating projection cellular anatomical entity plasma membrane bounded cell projection cell periphery cell cortex intracellular anatomical structure cytoplasm protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane membrane plasma 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 G-protein beta/gamma-subunit complex Cdc24p-Far1p-Gbetagamma complex
F [auth E], H	Guanine nucleotide-binding protein alpha-1 subunit,Guanine nucleotide-binding protein alpha-1 subunit	mu-type opioid receptor binding protein binding binding signaling receptor binding G protein-coupled receptor binding opioid receptor binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding mu-type opioid receptor binding protein binding binding signaling receptor binding G protein-coupled receptor binding opioid receptor binding 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 G-protein beta-subunit binding peptide hormone receptor binding corticotropin-releasing hormone receptor binding corticotropin-releasing hormone receptor 1 binding hormone receptor binding neuropeptide receptor binding G protein-coupled serotonin receptor binding protein-containing complex binding G-protein beta/gamma-subunit complex 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	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 cellular process signal transduction establishment of organelle localization cellular localization sexual reproduction 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 cellular process signal transduction establishment of organelle localization cellular localization sexual reproduction organelle transport along microtubule transport nuclear migration involved in conjugation with cellular fusion reproductive process nucleus localization intracellular transport establishment of localization conjugation with cellular fusion localization organelle localization establishment of localization in cell nuclear migration along microtubule microtubule-based transport transport along microtubule cytoskeleton-dependent intracellular transport microtubule-based movement microtubule-based process nuclear migration organelle fusion cellular component organization organelle organization nucleus organization karyogamy karyogamy involved in conjugation with cellular fusion cellular component organization or biogenesis response to organic substance regulation of reproductive process positive regulation of biological process regulation of conjugation with cellular fusion response to pheromone cellular response to pheromone positive regulation of conjugation with cellular fusion cellular response to organic substance positive regulation of reproductive process pheromone-dependent signal transduction involved in conjugation with cellular fusion signal transduction involved in positive regulation of conjugation with cellular fusion response to pheromone triggering conjugation with cellular fusion cellular response to chemical stimulus response to chemical cellular response to nitrogen compound response to dopamine dopamine receptor signaling pathway cellular response to dopamine response to monoamine cellular response to endogenous stimulus response to catecholamine cellular response to catecholamine stimulus response to organic cyclic compound response to organonitrogen compound response to endogenous stimulus cellular response to organic cyclic compound response to oxygen-containing compound response to nitrogen compound cellular response to oxygen-containing compound cellular response to organonitrogen compound cellular response to monoamine stimulus	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 cytosol membrane-bounded organelle endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle vesicle endosome membrane cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane organelle membrane
G	Guanine nucleotide-binding protein subunit gamma	protein binding binding G-protein beta-subunit binding	cellular response to stimulus response to organic substance regulation of cellular process response to stimulus sexual reproduction signaling regulation of reproductive process reproductive process positive regulation of biological process regulation of conjugation with cellular fusion regulation of signal transduction response to pheromone cell communication cellular response to pheromone positive regulation of conjugation with cellular fusion cellular response to stimulus response to organic substance regulation of cellular process response to stimulus sexual reproduction signaling regulation of reproductive process reproductive process positive regulation of biological process regulation of conjugation with cellular fusion regulation of signal transduction response to pheromone cell communication cellular response to pheromone positive regulation of conjugation with cellular fusion signal transduction cellular response to organic substance positive regulation of reproductive process pheromone-dependent signal transduction involved in conjugation with cellular fusion regulation of biological process regulation of signaling regulation of signal transduction involved in conjugation with cellular fusion signal transduction involved in positive regulation of conjugation with cellular fusion biological regulation conjugation with cellular fusion response to pheromone triggering conjugation with cellular fusion cellular response to chemical stimulus regulation of response to stimulus regulation of pheromone-dependent signal transduction involved in conjugation with cellular fusion response to chemical regulation of cell communication cellular process G protein-coupled receptor signaling pathway	cell periphery cell cortex intracellular anatomical structure cytoplasm cellular anatomical entity protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane membrane plasma membrane membrane protein complex heterotrimeric G-protein complex cell periphery cell cortex intracellular anatomical structure cytoplasm cellular anatomical entity protein-containing complex extrinsic component of plasma membrane catalytic complex plasma membrane protein complex cytoplasmic side of membrane membrane plasma 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 Cdc24p-Far1p-Gbetagamma complex G-protein beta/gamma-subunit complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth B], B [auth A]	IPR027458	Pheromone alpha factor receptor, double transmembrane domain superfamily	Homologous Superfamily
A [auth B], B [auth A]	IPR000366	GPCR fungal pheromone mating factor, STE2	Family
C [auth K], D [auth I]	IPR006742	Mating factor alpha, C-terminal repeat	Repeat
C [auth K], D [auth I]	IPR008675	Mating factor alpha precursor, N-terminal	Domain
E [auth F]	IPR019775	WD40 repeat, conserved site	Conserved Site
E [auth F]	IPR015943	WD40/YVTN repeat-like-containing domain superfamily	Homologous Superfamily
E [auth F]	IPR016346	Guanine nucleotide-binding protein, beta subunit	Family
E [auth F]	IPR036322	WD40-repeat-containing domain superfamily	Homologous Superfamily
E [auth F]	IPR001632	G-protein, beta subunit	Domain
E [auth F]	IPR001680	WD40 repeat	Repeat
E [auth F]	IPR020472	G-protein beta WD-40 repeat	Repeat
F [auth E], H	IPR001019	Guanine nucleotide binding protein (G-protein), alpha subunit	Family
F [auth E], H	IPR002975	Fungal G-protein, alpha subunit	Family
F [auth E], H	IPR011025	G protein alpha subunit, helical insertion	Homologous Superfamily
F [auth E], H	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
G	IPR015898	G-protein gamma-like domain	Domain
G	IPR036284	G-protein gamma-like domain superfamily	Homologous Superfamily
G	IPR041848	Guanine nucleotide-binding protein subunit gamma, fungal	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A [auth B], B [auth A], C [auth K], D [auth I], F [auth E] A [auth B], B [auth A], C [auth K], D [auth I], F [auth E], G, H	OPM	Transmembrane	Alpha-helical polytopic	Rhodopsin-like receptors and pumps	Fungal pheromone mating receptor

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A [auth B], B [auth A], C [auth K], D [auth I], F [auth E] A [auth B], B [auth A], C [auth K], D [auth I], F [auth E], G, H	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A [auth B], B [auth A], C [auth K], D [auth I], F [auth E] A [auth B], B [auth A], C [auth K], D [auth I], F [auth E], G, H	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A [auth B], B [auth A], C [auth K], D [auth I], F [auth E] A [auth B], B [auth A], C [auth K], D [auth I], F [auth E], G, H	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	G Protein-Coupled Receptors: Class D	Ste2 pheromone receptor, active state

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 R01GM133198.