Annotations: 3AAG

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF18527	e3aagA2	A: beta barrels	X: STT3/PglB/AglB beta-barrel domain (From Topology)	H: STT3/PglB/AglB beta-barrel domain (From Topology)	T: STT3/PglB/AglB beta-barrel domain	F: PF18527	ECOD (1.6)
A	PF21436	e3aagA1	A: a/b three-layered sandwiches	X: STT3/PglB/AglB core domain (From Topology)	H: STT3/PglB/AglB core domain (From Topology)	T: STT3/PglB/AglB core domain	F: PF21436	ECOD (1.6)
B	PF18527	e3aagB2	A: beta barrels	X: STT3/PglB/AglB beta-barrel domain (From Topology)	H: STT3/PglB/AglB beta-barrel domain (From Topology)	T: STT3/PglB/AglB beta-barrel domain	F: PF18527	ECOD (1.6)
B	PF21436	e3aagB1	A: a/b three-layered sandwiches	X: STT3/PglB/AglB core domain (From Topology)	H: STT3/PglB/AglB core domain (From Topology)	T: STT3/PglB/AglB core domain	F: PF21436	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.1380.40	Alpha Beta	3-Layer(aba) Sandwich	Pyruvate Kinase	Chain: A, domain 1	CATH (4.3.0)
B	3.40.1380.40	Alpha Beta	3-Layer(aba) Sandwich	Pyruvate Kinase	Chain: A, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF18527	STT3/PglB C-terminal beta-barrel domain (STT3_PglB_C)	STT3/PglB C-terminal beta-barrel domain	Asparagine-linked glycosylation is a post-translational modification of proteins containing the conserved sequence motif Asn-X-Ser/Thr. The attachment of oligosaccharides is implicated in diverse processes such as protein folding and quality control, ...	Asparagine-linked glycosylation is a post-translational modification of proteins containing the conserved sequence motif Asn-X-Ser/Thr. The attachment of oligosaccharides is implicated in diverse processes such as protein folding and quality control, organism development or host-pathogen interactions. The reaction is catalysed by oligosaccharyltransferase (OST), a membrane protein complex located in the endoplasmic reticulum. The central, catalytic enzyme of OST is the STT3 subunit, which has homologues in bacteria and archaea. Structural analysis of a bacterial OST, undecaprenyl-diphosphooligosaccharide protein glycotransferase EC:2.4.99.19 (PglB) protein, revealed two domains: a transmembrane domain and a periplasmic domain. This entry represents the C-terminal periplasmic beta-barrel domain [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	General glycosylation pathway protein	oligosaccharyl transferase activity glycosyltransferase activity transferase activity hexosyltransferase activity catalytic activity cation binding ion binding binding metal ion binding small molecule binding	cellular biosynthetic process organonitrogen compound biosynthetic process carbohydrate derivative metabolic process organic substance metabolic process organic substance biosynthetic process protein metabolic process protein modification process carbohydrate derivative biosynthetic process organonitrogen compound metabolic process cellular metabolic process glycoprotein biosynthetic process primary metabolic process glycoprotein metabolic process protein N-linked glycosylation cellular biosynthetic process organonitrogen compound biosynthetic process carbohydrate derivative metabolic process organic substance metabolic process organic substance biosynthetic process protein metabolic process protein modification process carbohydrate derivative biosynthetic process organonitrogen compound metabolic process cellular metabolic process glycoprotein biosynthetic process primary metabolic process glycoprotein metabolic process protein N-linked glycosylation protein glycosylation macromolecule biosynthetic process biosynthetic process glycosylation macromolecule modification macromolecule glycosylation metabolic process cellular process macromolecule metabolic process	cell periphery plasma membrane membrane cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR003674	Oligosaccharyl transferase, STT3 subunit	Family
A, B	IPR048307	Oligosaccharyl transferase STT3, N-terminal domain	Domain
A, B	IPR048999	STT3/PglB/AglB, core domain	Domain
A, B	IPR041563	STT3 subunit PglB, C-terminal beta-barrel domain	Domain

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A, B	MLY	Parent Component: LYS RESID: AA0075 PSI-MOD : N6,N6-dimethyl-L-lysine MOD:00084
A, B	MSE	Parent Component: MET RESID: AA0075

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 R01GM133198.