Annotations: 1PDK

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1pdka1	All beta proteins	Immunoglobulin-like beta-sandwich	PapD-like	Pilus chaperone	Pilus chaperone PapD, N-domain	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A	d1pdka2	All beta proteins	C2 domain-like	Periplasmic chaperone C-domain	Periplasmic chaperone C-domain	PapD	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d1pdkb_	All beta proteins	Common fold of diphtheria toxin/transcription factors/cytochrome f	Bacterial adhesins	Pilus subunits	PapK pilus subunit	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	PapD-like	8055309	3002067	SCOP2B (2022-06-29)
B	SCOP2 Family	Pilus subunits	8027830	4002034	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Bacterial adhesin-like	8040209	3000723	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)
A	PapD_C	e1pdkA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PapD_C	ECOD (1.6)
A	PapD_N	e1pdkA2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PapD_N	ECOD (1.6)
B	Fimbrial_1	e1pdkB1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Common fold of diphtheria toxin/transcription factors/cytochrome f	F: Fimbrial_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B	2.60.40.1090	Mainly Beta	Sandwich	Immunoglobulin-like	Fimbrial-type adhesion domain	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	PROTEIN (CHAPERONE PROTEIN PAPD)	-	cellular component organization cell wall organization or biogenesis cell wall organization cellular process cellular component organization or biogenesis external encapsulating structure organization	cellular anatomical structure outer membrane-bounded periplasmic space cell envelope periplasmic space
B	PROTEIN (PROTEIN PAPK)	-	cell adhesion involved in biofilm formation cell aggregation biofilm formation biological process involved in intraspecies interaction between organisms cell-substrate adhesion single-species biofilm formation aggregation of unicellular organisms submerged biofilm formation cell adhesion involved in single-species biofilm formation cell adhesion cellular process single-species submerged biofilm formation	cellular anatomical structure extracellular region pilus cell projection

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036316	Pili assembly chaperone, C-terminal domain superfamily	Homologous Superfamily
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR050643	Periplasmic Pilus Chaperone	Family
A	IPR016148	Pili assembly chaperone, C-terminal	Domain
A	IPR008962	PapD-like superfamily	Homologous Superfamily
A	IPR016147	Pili assembly chaperone, N-terminal	Domain
A	IPR001829	Pili assembly chaperone, bacterial	Family
A	IPR018046	Pili assembly chaperone, conserved site	Conserved Site
B	IPR000259	Fimbrial-type adhesion domain	Domain
B	IPR036937	Fimbrial-type adhesion domain superfamily	Homologous Superfamily
B	IPR050263	Bacterial Fimbrial Adherence	Family
B	IPR008966	Adhesion domain superfamily	Homologous Superfamily

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.