Annotations: 5NTB

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Ig_2	e5ntbB1	A: alpha bundles	X: Periplasmic binding protein-like II	H: Rubredoxin-related	T: Tetrapyrrole methylase C-terminal domain	F: Ig_2	ECOD (develop294)
A	NMT	e5ntbA1	A: alpha bundles	X: Periplasmic binding protein-like II	H: Rubredoxin-related	T: Tetrapyrrole methylase C-terminal domain	F: NMT	ECOD (develop294)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Papain inhibitor	enzyme regulator activity molecular function inhibitor activity peptidase regulator activity serine-type endopeptidase inhibitor activity molecular function regulator activity enzyme inhibitor activity peptidase inhibitor activity endopeptidase regulator activity endopeptidase inhibitor activity cysteine-type endopeptidase inhibitor activity	negative regulation of hydrolase activity negative regulation of proteolysis regulation of cellular process regulation of catalytic activity negative regulation of biological process negative regulation of catalytic activity regulation of primary metabolic process negative regulation of peptidase activity regulation of proteolysis proteolysis negative regulation of cellular process protein metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process negative regulation of hydrolase activity negative regulation of proteolysis regulation of cellular process regulation of catalytic activity negative regulation of biological process negative regulation of catalytic activity regulation of primary metabolic process negative regulation of peptidase activity regulation of proteolysis proteolysis negative regulation of cellular process protein metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process regulation of biological process regulation of protein metabolic process negative regulation of metabolic process biological regulation negative regulation of molecular function regulation of peptidase activity primary metabolic process regulation of macromolecule metabolic process regulation of molecular function regulation of hydrolase activity metabolic process cellular process macromolecule metabolic process regulation of metabolic process	cellular anatomical structure extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR048197	Papain inhibitor	Family
A, B	IPR036908	RlpA-like domain superfamily	Homologous Superfamily
A, B	IPR051477	Expansin_CellWall	Unknown
A, B	IPR009009	RlpA-like protein, double-psi beta-barrel 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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.