Annotations: 2A28

Atomic-resolution crystal structure of the second SH3 domain of yeast Bzz1 determined from a pseudomerohedrally twinned crystal

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
D	d2a28d1	All beta proteins	SH3-like barrel	SH3-domain	automated matches	automated matches	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
D	d2a28d2	Artifacts	Tags	Tags	Tags	N-terminal Tags	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
C	d2a28c1	All beta proteins	SH3-like barrel	SH3-domain	automated matches	automated matches	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
C	d2a28c2	Artifacts	Tags	Tags	Tags	N-terminal Tags	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
B	d2a28b1	All beta proteins	SH3-like barrel	SH3-domain	automated matches	automated matches	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
B	d2a28b2	Artifacts	Tags	Tags	Tags	N-terminal Tags	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
A	d2a28a1	All beta proteins	SH3-like barrel	SH3-domain	automated matches	automated matches	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
A	d2a28a2	Artifacts	Tags	Tags	Tags	N-terminal Tags	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D	SCOP2B Superfamily	SH3-domain	8090217	3000153	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	SH3-domain	8090217	3000153	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	SH3-domain	8090217	3000153	SCOP2B (2022-06-29)
A	SCOP2 Family	SH3-domain	8088361	4000369	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	SH3-domain	8090217	3000153	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D	HetR_C	e2a28D1	A: alpha arrays	X: Repetitive alpha hairpins	H: Dimerization domain of heterocyst differentiation protein HetR	T: Dimerization domain of heterocyst differentiation protein HetR	F: HetR_C	ECOD (v295)
C	HetR_C	e2a28C1	A: alpha arrays	X: Repetitive alpha hairpins	H: Dimerization domain of heterocyst differentiation protein HetR	T: Dimerization domain of heterocyst differentiation protein HetR	F: HetR_C	ECOD (v295)
B	HetR_C	e2a28B1	A: alpha arrays	X: Repetitive alpha hairpins	H: Dimerization domain of heterocyst differentiation protein HetR	T: Dimerization domain of heterocyst differentiation protein HetR	F: HetR_C	ECOD (v295)
A	HetR_C	e2a28A1	A: alpha arrays	X: Repetitive alpha hairpins	H: Dimerization domain of heterocyst differentiation protein HetR	T: Dimerization domain of heterocyst differentiation protein HetR	F: HetR_C	ECOD (v295)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D	2.30.30.40	Mainly Beta	Roll	SH3 type barrels.	SH3 Domains	CATH (4.3.0)
C	2.30.30.40	Mainly Beta	Roll	SH3 type barrels.	SH3 Domains	CATH (4.3.0)
B	2.30.30.40	Mainly Beta	Roll	SH3 type barrels.	SH3 Domains	CATH (4.3.0)
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, B, C, D	PF14604	Variant SH3 domain (SH3_9)	Variant SH3 domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	BZZ1 protein	enzyme regulator activity enzyme activator activity molecular function activator activity molecular function regulator activity binding phospholipid binding lipid binding	localization import into cell transport cellular process endocytosis establishment of localization vesicle-mediated transport cellular component organization organelle organization actin cytoskeleton organization actin filament organization actin filament-based process cellular component organization or biogenesis actin nucleation localization import into cell transport cellular process endocytosis establishment of localization vesicle-mediated transport cellular component organization organelle organization actin cytoskeleton organization actin filament organization actin filament-based process cellular component organization or biogenesis actin nucleation supramolecular fiber organization cytoskeleton organization response to osmotic stress response to stimulus response to stress response to abiotic stimulus response to salt stress regulation of cytoskeleton organization regulation of cellular process regulation of cellular component organization regulation of actin filament-based process regulation of cellular component size cellular component biogenesis regulation of protein-containing complex assembly cellular component assembly protein-containing complex assembly regulation of actin filament polymerization regulation of biological quality protein polymerization actin polymerization or depolymerization regulation of biological process regulation of actin filament organization actin filament polymerization protein-containing complex organization biological regulation regulation of actin polymerization or depolymerization regulation of cellular component biogenesis regulation of organelle organization regulation of protein polymerization regulation of actin filament length regulation of actin cytoskeleton organization regulation of supramolecular fiber organization regulation of anatomical structure size	cell cortex intracellular anatomical structure cortical cytoskeleton intracellular membraneless organelle actin cytoskeleton cell periphery intracellular organelle endocytic patch cellular anatomical structure cytoskeleton organelle membraneless organelle cortical actin cytoskeleton actin cortical patch cell cortex intracellular anatomical structure cortical cytoskeleton intracellular membraneless organelle actin cytoskeleton cell periphery intracellular organelle endocytic patch cellular anatomical structure cytoskeleton organelle membraneless organelle cortical actin cytoskeleton actin cortical patch cytoplasm cell projection mating projection cell tip mating projection tip cell pole plasma membrane bounded cell projection site of polarized growth plasma membrane membrane cellular bud neck cellular bud

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR001452	SH3 domain	Domain
A, B, C, D	IPR036028	SH3-like domain superfamily	Homologous Superfamily
A, B, C, D	IPR027267	AH/BAR domain superfamily	Homologous Superfamily
A, B, C, D	IPR001060	FCH domain	Domain
A, B, C, D	IPR031160	F-BAR domain	Domain

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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.