1SR4 | pdb_00001sr4

Crystal Structure of the Haemophilus ducreyi cytolethal distending toxin

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
Membrane Protein Annotation: OPM

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d1sr4b_	Alpha and beta proteins (a+b)	DNase I-like	DNase I-like	DNase I-like	Cytolethal distending toxin subunit B	([Haemophilus] ducreyi ) [TaxId: 730 ],	SCOPe (2.08)
C	d1sr4c_	All beta proteins	beta-Trefoil	Ricin B-like lectins	Ricin B-like	Cytolethal distending toxin subunit C	([Haemophilus] ducreyi ) [TaxId: 730 ],	SCOPe (2.08)
A	d1sr4a_	All beta proteins	beta-Trefoil	Ricin B-like lectins	Ricin B-like	Cytolethal distending toxin subunit A	([Haemophilus] ducreyi ) [TaxId: 730 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2 Family	DNase I-like	8027350	4002213	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	DNase I-like	8039729	3000957	SCOP2 (2022-06-29)
C	SCOP2 Family	Ricin B-like	8027348	4002005	SCOP2 (2022-06-29)
C	SCOP2 Superfamily	Ricin B-like lectins	8039727	3000678	SCOP2 (2022-06-29)
A	SCOP2 Family	Ricin B-like	8027346	4002005	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Ricin B-like lectins	8039725	3000678	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)
B		e1sr4B1	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: CheD	F:	ECOD (20:10:01)
C		e1sr4C1	A: beta-Trefoil	X: beta-Trefoil	H: beta-Trefoil	T: RicinB_lectin_2	F:	ECOD (20:10:01)
A		e1sr4A1	A: beta-Trefoil	X: beta-Trefoil	H: beta-Trefoil	T: RicinB_lectin_2	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.60.10.10	Alpha Beta	4-Layer Sandwich	Deoxyribonuclease I	Chain A	CATH (4.3.0)
C	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)
A	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF03498	Cytolethal distending toxin A/C domain (CDtoxinA)	Cytolethal distending toxin A/C domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	cytolethal distending toxin protein B	catalytic activity	-	-
C	cytolethal distending toxin protein C	binding carbohydrate binding toxin activity	-	cell periphery cell outer membrane cellular anatomical structure external encapsulating structure membrane cell envelope outer membrane
A	Cytolethal distending toxin subunit A	binding carbohydrate binding toxin activity	-	cell periphery cell outer membrane cellular anatomical structure external encapsulating structure membrane cell envelope outer membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR005135	Endonuclease/exonuclease/phosphatase	Domain
B	IPR003539	Cytolethal distending toxin B	Family
B	IPR036691	Endonuclease/exonuclease/phosphatase superfamily	Homologous Superfamily
C	IPR003558	Cytolethal distending toxin A/C	Family
C	IPR035992	Ricin B-like lectins	Homologous Superfamily
A	IPR003558	Cytolethal distending toxin A/C	Family
A	IPR015957	Cytolethal distending toxin A	Family
A	IPR035992	Ricin B-like lectins	Homologous Superfamily

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C	OPM	Monotopic/peripheral	All beta monotopic/peripheral	Beta-trefoil superfamily	Cytolethal distending toxin A/C family

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.