Annotations: 1IIB

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1iiba_	Alpha and beta proteins (a/b)	Phosphotyrosine protein phosphatases I-like	PTS system IIB component-like	PTS system, Lactose/Cellobiose specific IIB subunit	Enzyme IIB-cellobiose	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
B	d1iibb_	Alpha and beta proteins (a/b)	Phosphotyrosine protein phosphatases I-like	PTS system IIB component-like	PTS system, Lactose/Cellobiose specific IIB subunit	Enzyme IIB-cellobiose	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	PTS system Lactose/Cellobiose specific IIB subunit	8031965	4000439	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	PTS system IIB component-like	8044343	3000300	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	PTS system IIB component-like	8044343	3000300	SCOP2B (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	PTS_IIB	e1iibA1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Flavoproteins/Phosphotyrosine protein phosphatases-like	T: Phosphotyrosine protein phosphatases I-like	F: PTS_IIB	ECOD (1.6)
B	PTS_IIB	e1iibB1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Flavoproteins/Phosphotyrosine protein phosphatases-like	T: Phosphotyrosine protein phosphatases I-like	F: PTS_IIB	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.2300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Response regulator	CATH (4.3.0)
B	3.40.50.2300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Response regulator	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02302	PTS system, Lactose/Cellobiose specific IIB subunit (PTS_IIB)	PTS system, Lactose/Cellobiose specific IIB subunit	The bacterial phosphoenolpyruvate: sugar phosphotransferase system (PTS) is a multi-protein system involved in the regulation of a variety of metabolic and transcriptional processes. The lactose/cellobiose-specific family are one of four structurally ...	The bacterial phosphoenolpyruvate: sugar phosphotransferase system (PTS) is a multi-protein system involved in the regulation of a variety of metabolic and transcriptional processes. The lactose/cellobiose-specific family are one of four structurally and functionally distinct group IIB PTS system cytoplasmic enzymes. The fold of IIB cellobiose shows similar structure to mammalian tyrosine phosphatases. This family also contains the fructose specific IIB subunit.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	ENZYME IIB OF THE CELLOBIOSE-SPECIFIC PHOSPHOTRANSFERASE SYSTEM	protein-phosphocysteine-N,N'-diacetylchitobiose phosphotransferase system transporter activity active transmembrane transporter activity protein-phosphocysteine-sugar phosphotransferase activity transporter activity transferase activity carbohydrate transmembrane transporter activity transmembrane transporter activity catalytic activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups kinase activity protein-N(PI)-phosphohistidine-sugar phosphotransferase activity	phosphorylation cellular metabolic process phosphate-containing compound metabolic process metabolic process cellular process phosphorus metabolic process localization N,N'-diacetylchitobiose import transport organic substance transport carbohydrate derivative transport establishment of localization import into cell phosphoenolpyruvate-dependent sugar phosphotransferase system phosphorylation cellular metabolic process phosphate-containing compound metabolic process metabolic process cellular process phosphorus metabolic process localization N,N'-diacetylchitobiose import transport organic substance transport carbohydrate derivative transport establishment of localization import into cell phosphoenolpyruvate-dependent sugar phosphotransferase system import across plasma membrane carbohydrate import across plasma membrane carbohydrate transport transmembrane transport carbohydrate transmembrane transport	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol protein-containing complex transmembrane transporter complex membrane membrane protein complex transporter complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR003501	Phosphotransferase system, EIIB component, type 2/3	Domain
A, B	IPR036095	PTS system IIB component-like superfamily	Homologous Superfamily
A, B	IPR013012	Phosphotransferase system, EIIB component, type 3	Domain

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.