Annotations: 1VB5

Crystal Structure Analysis of the Pyrococcus horikoshii OT3 translation initiation factor eIF-2B

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
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)
A	d1vb5a_	Alpha and beta proteins (a/b)	NagB/RpiA/CoA transferase-like	NagB/RpiA/CoA transferase-like	IF2B-like	Putative eIF-2B subunit 2-like protein PH0440	(Pyrococcus horikoshii OT3 ) [TaxId: 70601 ],	SCOPe (2.08)
B	d1vb5b_	Alpha and beta proteins (a/b)	NagB/RpiA/CoA transferase-like	NagB/RpiA/CoA transferase-like	IF2B-like	Putative eIF-2B subunit 2-like protein PH0440	(Pyrococcus horikoshii OT3 ) [TaxId: 70601 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	IF2B-like	8030670	4002100	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	NagB/RpiA/CoA transferase-like	8043049	3000693	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	NagB/RpiA/CoA transferase-like	8043049	3000693	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	IF-2B	e1vb5A1	A: beta barrels	X: Rossmann-like	H: Rossmann-related	T: NagB/RpiA/CoA transferase-like	F: IF-2B	ECOD (v294.2)
B	Ribosomal_L1	e1vb5B3	A: beta barrels	X: Fusion glycoprotein F2	H: RIFT-related	T: double psi	F: Ribosomal_L1	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
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)
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)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	translation initiation factor eIF-2B	translation factor activity translation initiation factor activity GTPase regulator activity enzyme regulator activity guanyl-nucleotide exchange factor activity nucleoside-triphosphatase regulator activity molecular function regulator activity	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR051501	Eukaryotic initiation factor 2B subunits alpha/beta/delta	Family
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	IPR027363	Methylthioribose-1-phosphate isomerase, N-terminal	Homologous Superfamily

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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.