Annotations: 3H4C

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF18542	e3h4cA1	A: alpha arrays	X: HTH	H: HTH	T: Cyclin-like	F: PF18542	ECOD (1.6)
A	PF22108	e3h4cA2	A: alpha arrays	X: HTH	H: HTH	T: Cyclin-like	F: PF22108	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.472.10	Mainly Alpha	Orthogonal Bundle	Cyclin A	domain 1	CATH (4.3.0)
A	1.10.472.110	Mainly Alpha	Orthogonal Bundle	Cyclin A	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF18542	Transcription factor IIB C-terminal module 1 (TFIIB_C_1)	Transcription factor IIB C-terminal module 1	In the pathogenic trypanosome, Trypanosoma brucei, transcription factor IIB (tTFIIB) is essential for spliced leader (SL) RNA gene transcription and cell viability, but has a highly divergent primary sequence in comparison to TFIIB in other eukaryote ...	In the pathogenic trypanosome, Trypanosoma brucei, transcription factor IIB (tTFIIB) is essential for spliced leader (SL) RNA gene transcription and cell viability, but has a highly divergent primary sequence in comparison to TFIIB in other eukaryotes. Structure analysis of the C-terminal region of trypanosome TFIIB, reveals 2, closely packed helical modules followed by a C-terminal extension of 32 aa. The trypanosome-specific region comprises the second helical module and the C-terminal extension. Both helical modules contain the canonical 5-helix cyclin fold characteristic of TFIIB proteins [1]. This domain is mostly found in Trypanosomatidae.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Transcription factor TFIIB-like	DNA binding binding organic cyclic compound binding nucleic acid binding general transcription initiation factor activity RNA polymerase II general transcription initiation factor activity basal transcription machinery binding RNA polymerase binding protein binding RNA polymerase II complex binding basal RNA polymerase II transcription machinery binding RNA polymerase core enzyme binding enzyme binding cation binding DNA binding binding organic cyclic compound binding nucleic acid binding general transcription initiation factor activity RNA polymerase II general transcription initiation factor activity basal transcription machinery binding RNA polymerase binding protein binding RNA polymerase II complex binding basal RNA polymerase II transcription machinery binding RNA polymerase core enzyme binding enzyme binding cation binding ion binding metal ion binding small molecule binding	cellular biosynthetic process RNA metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process transcription by RNA polymerase II organic substance metabolic process organic substance biosynthetic process transcription initiation at RNA polymerase II promoter cellular metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression cellular biosynthetic process RNA metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process transcription by RNA polymerase II organic substance metabolic process organic substance biosynthetic process transcription initiation at RNA polymerase II promoter cellular metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process DNA-templated transcription initiation organic cyclic compound metabolic process biosynthetic process organic cyclic compound biosynthetic process metabolic process cellular process macromolecule metabolic process	membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle nucleus intracellular membrane-bounded organelle cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR041189	Transcription factor IIB, C-terminal module 1	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 R01GM133198.