Annotations: 7AD3

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F [auth E]	FAD_binding_3, Pyr_redox_3	e7ad3E1	A: alpha bundles	X: CNF1/YfiH-like putative cysteine hydrolases	H: RIFT-related	T: FMN-binding split barrel 2	F: FAD_binding_3, Pyr_redox_3	ECOD (develop294)
E [auth F]	RNA_pol_Rpb2_1,RNA_pol_Rpb2_3	e7ad3F1	A: alpha bundles	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: RNA_pol_Rpb2_1,RNA_pol_Rpb2_3	ECOD (develop294)

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
E [auth F]	PF00400	WD domain, G-beta repeat (WD40)	WD domain, G-beta repeat	-	Repeat
C [auth K], D [auth I]	PF04648	Yeast mating factor alpha hormone (MF_alpha)	Yeast mating factor alpha hormone	-	Family

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	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 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 signal transduction cellular response to stimulus 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 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 cellular anatomical structure plasma membrane membrane 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
G	Guanine nucleotide-binding protein subunit gamma	protein binding binding G-protein beta-subunit binding	cellular response to stimulus 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 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 positive regulation of reproductive process pheromone-dependent signal transduction involved in conjugation with cellular fusion regulation of biological process regulation of signaling 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 cellular anatomical structure 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 cell periphery cell cortex cellular anatomical structure 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 Cdc24p-Far1p-Gbetagamma complex G-protein beta/gamma-subunit complex
F [auth E], H	Guanine nucleotide-binding protein alpha-1 subunit,Guanine nucleotide-binding protein alpha-1 subunit	protein binding binding G-protein beta-subunit binding protein-containing complex binding G-protein beta/gamma-subunit complex binding signaling receptor binding G protein-coupled receptor binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding protein binding binding G-protein beta-subunit binding protein-containing complex binding G-protein beta/gamma-subunit complex binding signaling receptor binding G protein-coupled receptor binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion 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	carbohydrate metabolic process regulation of biological process regulation of cellular process biological regulation primary metabolic process metabolic process cellular process regulation of carbohydrate metabolic process regulation of metabolic process regulation of primary metabolic process cellular response to stimulus sexual reproduction response to stimulus signaling carbohydrate metabolic process regulation of biological process regulation of cellular process biological regulation primary metabolic process metabolic process cellular process regulation of carbohydrate metabolic process regulation of metabolic process regulation of primary metabolic process cellular response to stimulus 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 signal transduction 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 conjugation with cellular fusion response to pheromone triggering conjugation with cellular fusion cellular response to chemical stimulus response to chemical G protein-coupled receptor signaling pathway establishment of organelle localization cellular localization organelle transport along microtubule transport nuclear migration involved in conjugation with cellular fusion nucleus localization intracellular transport establishment of localization 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	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 cell periphery cellular anatomical structure 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 heterotrimeric G-protein complex side of membrane cell periphery cellular anatomical structure cytoplasmic side of plasma membrane GTPase complex extrinsic component of membrane extrinsic component of cytoplasmic side of plasma membrane membrane-bounded organelle intracellular anatomical structure endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle cytoplasm vesicle cytosol endosome membrane cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane organelle membrane
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 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 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 positive regulation of reproductive process pheromone-dependent signal transduction involved in conjugation with cellular fusion regulation of biological process regulation of signaling 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 localization protein localization to cell tip protein localization to mating projection tip macromolecule localization intracellular protein localization chemotropism tropism response to external stimulus establishment of protein localization cellular localization establishment of protein localization to membrane establishment of protein localization to plasma membrane localization within membrane establishment of localization G protein-coupled receptor signaling pathway	cell projection mating projection cellular anatomical structure 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 structure 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
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 molecular function activator activity mating pheromone activity molecular function regulator activity signaling receptor regulator activity receptor ligand activity cation binding cupric ion binding transition metal ion binding copper ion binding ion binding binding metal ion binding small molecule binding pheromone activity molecular function activator activity 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 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 sexual reproduction reproductive process mating multi-organism reproductive process cellular response to stimulus 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 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	cellular anatomical structure extracellular region

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
G	IPR015898	G-protein, gamma subunit-like domain	Domain
G	IPR036284	G-protein gamma-like domain superfamily	Homologous Superfamily
G	IPR041848	Guanine nucleotide-binding protein subunit gamma, fungal	Family
F [auth E], H	IPR001019	Guanine nucleotide binding 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
E [auth F]	IPR019775	WD40 repeat, conserved site	Conserved Site
E [auth F]	IPR020472	PAC1/LIS1-like, WD-40 repeat	Repeat
E [auth F]	IPR001632	G-protein beta subunit-like, WD40 repeats	Domain
E [auth F]	IPR015943	WD40/YVTN repeat-like-containing domain superfamily	Homologous Superfamily
E [auth F]	IPR016346	G-protein subunit beta 1-5	Family
E [auth F]	IPR036322	WD40-repeat-containing domain superfamily	Homologous Superfamily
E [auth F]	IPR001680	WD40 repeat	Repeat
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

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 R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.