Annotations: 7QA8

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, D [auth B]	PF02116	Fungal pheromone mating factor STE2 GPCR (STE2)	Fungal pheromone mating factor STE2 GPCR	-	Family
B [auth K], C [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, D [auth B]	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
B [auth K], C [auth I]	HIS-ALA-LEU-GLN-LEU-LYS-PRO-GLY-GLN-PRO-NLE-TYR	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

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, D [auth B]	IPR027458	Pheromone alpha factor receptor, double transmembrane domain superfamily	Homologous Superfamily
A, D [auth B]	IPR000366	GPCR fungal pheromone mating factor, STE2	Family
B [auth K], C [auth I]	IPR006742	Mating factor alpha, C-terminal repeat	Repeat
B [auth K], C [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, B [auth K], C [auth I], D [auth B]	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, B [auth K], C [auth I], D [auth B]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B [auth K], C [auth I], D [auth B]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	G Protein-Coupled Receptors: Class D	Ste2 pheromone receptor, ligand-free 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.