2A0U | pdb_00002a0u

Crystal structure of the eukaryotic initiation factor 2B from Leishmania major at 2.1 A resolution

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d2a0ub_	Alpha and beta proteins (a/b)	NagB/RpiA/CoA transferase-like	NagB/RpiA/CoA transferase-like	IF2B-like	Initiation factor 2b	(Leishmania major ) [TaxId: 5664 ],	SCOPe (2.08)
A	d2a0ua1	Alpha and beta proteins (a/b)	NagB/RpiA/CoA transferase-like	NagB/RpiA/CoA transferase-like	IF2B-like	Initiation factor 2b	(Leishmania major ) [TaxId: 5664 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	NagB/RpiA/CoA transferase-like	8033451	3000693	SCOP2B (2022-06-29)
A	SCOP2 Family	IF2B-like	8021071	4002100	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	NagB/RpiA/CoA transferase-like	8033451	3000693	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)
B	Ribosomal_L1	e2a0uB2	A: a/b three-layered sandwiches	X: Fusion glycoprotein F2	H: RIFT-related	T: double psi	F: Ribosomal_L1	ECOD (v294.1)
A	IF-2B	e2a0uA2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NagB/RpiA/CoA transferase-like	F: IF-2B	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.20.120.420	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	translation initiation factor eif-2b, domain 1	CATH (4.3.0)
B	3.40.50.10470	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Translation initiation factor eif-2b	CATH (4.3.0)
A	1.20.120.420	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	translation initiation factor eif-2b, domain 1	CATH (4.3.0)
A	3.40.50.10470	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Translation initiation factor eif-2b	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01008	Initiation factor 2 subunit family (IF-2B)	Initiation factor 2 subunit family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	initiation factor 2B	isomerase activity S-methyl-5-thioribose-1-phosphate isomerase activity intramolecular oxidoreductase activity, interconverting aldoses and ketoses intramolecular oxidoreductase activity catalytic activity	-	cellular anatomical structure intracellular anatomical structure cytoplasm membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR042529	Initiation factor 2B-like, C-terminal	Homologous Superfamily
A, B	IPR037171	NagB/RpiA transferase-like	Homologous Superfamily
A, B	IPR000649	Initiation factor 2B-related	Family
A, B	IPR011559	Initiation factor 2B alpha/beta/delta	Family
A, B	IPR027363	Methylthioribose-1-phosphate isomerase, N-terminal	Homologous Superfamily
A, B	IPR005251	Methylthioribose-1-phosphate isomerase	Family

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.