Annotations: 4QFN

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Pentaxin	e4qfnB3	A: alpha arrays	X: Alpha-beta plaits	H: Protease propeptides/inhibitors	T: Protease propeptides/inhibitors	F: Pentaxin	ECOD (v295.2)
B	SBP_bac_1	e4qfnB1	A: alpha arrays	X: Alpha-lytic protease prodomain-like	H: Glycosyl hydrolase domain	T: Glycosyl hydrolase domain	F: SBP_bac_1	ECOD (v295.2)
A	Pentaxin	e4qfnA2	A: alpha arrays	X: Alpha-beta plaits	H: Protease propeptides/inhibitors	T: Protease propeptides/inhibitors	F: Pentaxin	ECOD (v295.2)
A	SBP_bac_1	e4qfnA1	A: alpha arrays	X: Alpha-lytic protease prodomain-like	H: Glycosyl hydrolase domain	T: Glycosyl hydrolase domain	F: SBP_bac_1	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.40.190.10	Alpha Beta	3-Layer(aba) Sandwich	D-Maltodextrin-Binding Protein	domain 2	CATH (4.3.0)
B	3.90.76.10	Alpha Beta	Alpha-Beta Complex	Dipeptide-binding Protein	domain 1	CATH (4.3.0)
B	3.10.105.10	Alpha Beta	Roll	Dipeptide-binding Protein	domain 3	CATH (4.3.0)
A	3.40.190.10	Alpha Beta	3-Layer(aba) Sandwich	D-Maltodextrin-Binding Protein	domain 2	CATH (4.3.0)
A	3.90.76.10	Alpha Beta	Alpha-Beta Complex	Dipeptide-binding Protein	domain 1	CATH (4.3.0)
A	3.10.105.10	Alpha Beta	Roll	Dipeptide-binding Protein	domain 3	CATH (4.3.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	ABC transporter periplasmic peptide-binding protein	peptide transmembrane transporter activity transporter activity transmembrane transporter activity	peptide transport localization transport establishment of localization	ATPase dependent transmembrane transport complex protein-containing complex plasma membrane protein complex membrane plasma membrane membrane protein complex transporter complex ATP-binding cassette (ABC) transporter complex cell periphery cellular anatomical structure transmembrane transporter complex extracellular region outer membrane-bounded periplasmic space cell envelope ATPase dependent transmembrane transport complex protein-containing complex plasma membrane protein complex membrane plasma membrane membrane protein complex transporter complex ATP-binding cassette (ABC) transporter complex cell periphery cellular anatomical structure transmembrane transporter complex extracellular region outer membrane-bounded periplasmic space cell envelope periplasmic space

Chains	Accession	Name	Type
A, B	IPR000914	Solute-binding protein family 5 domain	Domain
A, B	IPR039424	Solute-binding protein family 5	Family
A, B	IPR030678	Peptide/nickel binding protein, MppA-type	Family
A, B	IPR023765	Solute-binding protein family 5, conserved site	Conserved Site

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.

4QFN | pdb_00004qfn