Annotations: 2RQW

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	SH3_1	e2rqwA1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: SH3_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.30.30.40	Mainly Beta	Roll	SH3 type barrels.	SH3 Domains	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00018	SH3 domain (SH3_1)	SH3 domain	SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organisation. First described in the Src cytoplasmic tyrosine kinase Swiss:P12931. The structure is a partly opened beta barrel.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	24-meric peptide from Serine/threonine-protein kinase STE20	MAP kinase kinase kinase kinase activity protein serine/threonine kinase activity catalytic activity, acting on a protein kinase activity protein kinase activity transferase activity catalytic activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups protein serine kinase activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding MAP kinase kinase kinase kinase activity protein serine/threonine kinase activity catalytic activity, acting on a protein kinase activity protein kinase activity transferase activity catalytic activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups protein serine kinase activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding RNA binding nucleic acid binding mRNA binding histone H2BS14 kinase activity histone H2B kinase activity histone modifying activity histone kinase activity	localization transport macromolecule localization lipid localization lipid transport sterol transport organic hydroxy compound transport sterol import establishment of localization pseudohyphal growth growth cellular process growth of unicellular organism as a thread of attached cells filamentous growth localization transport macromolecule localization lipid localization lipid transport sterol transport organic hydroxy compound transport sterol import establishment of localization pseudohyphal growth growth cellular process growth of unicellular organism as a thread of attached cells filamentous growth cell growth filamentous growth of a population of unicellular organisms cytoskeleton-dependent cytokinesis reproductive process in single-celled organism reproductive process mitotic cytokinesis cytokinesis establishment or maintenance of cell polarity mitotic cell cycle asexual reproduction establishment of cell polarity mitotic cell cycle process cell cycle cell division cellular bud site selection cell budding bipolar cellular bud site selection cell cycle process invasive growth in response to glucose limitation invasive filamentous growth regulation of cell cycle phase transition regulation of cellular process cell cycle phase transition exit from mitosis cellular component organization regulation of mitotic cell cycle cellular component organization or biogenesis regulation of cell cycle regulation of biological process mitotic nuclear division regulation of cell cycle process organelle fission biological regulation regulation of mitotic cell cycle phase transition nuclear division organelle organization regulation of exit from mitosis mitotic cell cycle phase transition cellular response to stimulus signal transduction involved in filamentous growth response to stimulus signaling cell communication signal transduction positive regulation of programmed cell death regulation of apoptotic process positive regulation of biological process regulation of programmed cell death cell death positive regulation of apoptotic process apoptotic process programmed cell death positive regulation of cellular process regulation of signaling regulation of signal transduction regulation of MAPK cascade intracellular signal transduction regulation of intracellular signal transduction regulation of response to stimulus intracellular signaling cassette MAPK cascade regulation of cell communication budding cell bud growth budding cell apical bud growth cellular response to nutrient levels response to nutrient levels cellular response to stress response to stress response to starvation cellular response to starvation cellular response to oxidative stress response to oxygen-containing compound cellular response to chemical stress cellular response to oxygen-containing compound cellular response to hydrogen peroxide response to reactive oxygen species response to hydrogen peroxide response to oxidative stress cellular response to reactive oxygen species cellular response to chemical stimulus response to chemical vacuole organization organelle inheritance vacuole inheritance cellular component biogenesis cellular component assembly stress granule assembly organelle assembly membraneless organelle assembly sexual reproduction response to pheromone conjugation with cellular fusion cellular response to pheromone response to pheromone triggering conjugation with cellular fusion regulation of reproductive process regulation of conjugation with cellular fusion positive regulation of conjugation with cellular fusion 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 regulation of biosynthetic process negative regulation of metabolic process negative regulation of biological process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression negative regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process negative regulation of cellular process regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process regulation of metabolic process negative regulation of macromolecule metabolic process RNA metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process transcription by RNA polymerase II negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of transcription by RNA polymerase II negative regulation of DNA-templated transcription negative regulation of transcription by RNA polymerase II primary metabolic process nucleobase-containing compound biosynthetic process nucleic acid metabolic process regulation of DNA-templated transcription negative regulation of RNA metabolic process regulation of localization negative regulation of sterol transport regulation of lipid transport negative regulation of transport negative regulation of lipid localization negative regulation of sterol import regulation of sterol transport negative regulation of lipid transport regulation of transport regulation of sterol import regulation of lipid localization response to osmotic stress osmosensory signaling pathway via Sho1 osmosensor cellular response to osmotic stress cellular response to environmental stimulus osmosensory signaling pathway response to abiotic stimulus cellular response to abiotic stimulus	cellular anatomical structure incipient cellular bud site site of polarized growth cell projection mating projection cell tip mating projection tip cell pole plasma membrane bounded cell projection cell periphery plasma membrane membrane intracellular anatomical structure cytoplasm cellular anatomical structure incipient cellular bud site site of polarized growth cell projection mating projection cell tip mating projection tip cell pole plasma membrane bounded cell projection cell periphery plasma membrane membrane intracellular anatomical structure cytoplasm membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle
A	Bud emergence protein 1	protein-macromolecule adaptor activity molecular adaptor activity binding phospholipid binding lipid binding phosphatidylinositol-3-phosphate binding phosphatidylinositol phosphate binding phosphatidylinositol binding	developmental process anatomical structure morphogenesis sexual reproduction reproductive process anatomical structure development cell morphogenesis involved in conjugation with cellular fusion cell morphogenesis conjugation with cellular fusion cytoskeleton-dependent cytokinesis mitotic cytokinesis cytokinesis establishment or maintenance of cell polarity mitotic cell cycle establishment of cell polarity developmental process anatomical structure morphogenesis sexual reproduction reproductive process anatomical structure development cell morphogenesis involved in conjugation with cellular fusion cell morphogenesis conjugation with cellular fusion cytoskeleton-dependent cytokinesis mitotic cytokinesis cytokinesis establishment or maintenance of cell polarity mitotic cell cycle establishment of cell polarity mitotic cell cycle process cellular process cell cycle cell division cellular bud site selection cell cycle process cellular response to stimulus regulation of biological process regulation of signaling regulation of cellular process small GTPase-mediated signal transduction response to stimulus signaling regulation of small GTPase mediated signal transduction biological regulation regulation of signal transduction regulation of Rho protein signal transduction intracellular signal transduction Rho protein signal transduction cell communication regulation of intracellular signal transduction regulation of response to stimulus intracellular signaling cassette regulation of cell communication signal transduction positive regulation of organelle organization regulation of cellular component organization positive regulation of cellular component organization vacuole organization positive regulation of vacuole organization positive regulation of vacuole fusion, non-autophagic positive regulation of biological process regulation of vacuole organization regulation of organelle organization cellular component organization organelle fusion organelle organization vacuole fusion vacuole fusion, non-autophagic regulation of vacuole fusion, non-autophagic cellular component organization or biogenesis positive regulation of cellular process maintenance of protein location localization macromolecule localization intracellular protein localization maintenance of location	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle incipient cellular bud site site of polarized growth cellular bud cellular bud tip cell periphery cell cortex membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle incipient cellular bud site site of polarized growth cellular bud cellular bud tip cell periphery cell cortex cell projection mating projection cell tip mating projection tip cell pole plasma membrane bounded cell projection protein kinase complex transferase complex, transferring phosphorus-containing groups PAR polarity complex protein-containing complex catalytic complex serine/threonine protein kinase complex transferase complex cytoskeleton membraneless organelle intracellular membraneless organelle cellular bud neck

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR000095	CRIB domain	Domain
B	IPR017441	Protein kinase, ATP binding site	Binding Site
B	IPR000719	Protein kinase domain	Domain
B	IPR036936	CRIB domain superfamily	Homologous Superfamily
B	IPR051931	Serine/threonine-protein kinase PAK 3-like	Family
B	IPR033923	p21 activated kinase binding domain	Domain
B	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
B	IPR008271	Serine/threonine-protein kinase, active site	Active Site
A	IPR051228	NADPH Oxidase and PX Domain-Containing	Family
A	IPR001683	Phox homology	Domain
A	IPR000270	PB1 domain	Domain
A	IPR036028	SH3-like domain superfamily	Homologous Superfamily
A	IPR035550	Bem1/Scd2, PX domain	Domain
A	IPR035549	Bem1/Scd2, SH3 domain 2	Domain
A	IPR035548	Bem1/Scd2, SH3 domain 1	Domain
A	IPR053793	PB1-like domain	Domain
A	IPR036871	PX domain superfamily	Homologous Superfamily
A	IPR001452	SH3 domain	Domain

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.