2MH2

Structural insights into the DNA recognition and protein interaction domains reveal fundamental homologous DNA pairing properties of HOP2

External Resource: Annotation

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: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Hop2 N-terminal domain-like	8049069	4006330	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Winged helix DNA-binding domain	8089884	3000034	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)
A	PF07106	e2mh2A1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: PF07106	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF07106	TBPIP/Hop2 winged helix domain (TBPIP)	TBPIP/Hop2 winged helix domain	This family consists of several eukaryotic TBP-1 interacting protein (TBPIP) sequences. TBP-1 has been demonstrated to interact with the human immunodeficiency virus type 1 (HIV-1) viral protein Tat, then modulate the essential replication process of ...	This family consists of several eukaryotic TBP-1 interacting protein (TBPIP) sequences. TBP-1 has been demonstrated to interact with the human immunodeficiency virus type 1 (HIV-1) viral protein Tat, then modulate the essential replication process of HIV. In addition, TBP-1 has been shown to be a component of the 26S proteasome, a basic multiprotein complex that degrades ubiquitinated proteins in an ATP-dependent fashion. Human TBPIP interacts with human TBP-1 then modulates the inhibitory action of human TBP-1 on HIV-Tat-mediated transactivation [1]. TBPIP was found to be an activator that specifically stimulates the homologous pairing catalyzed by DMC1. Family members also include yeast homologous-pairing protein 2 (Hop2) and its homologues from animals and plants. They are required for proper homologous pairing and efficient cross-over and intragenic recombination during meiosis [2, 3, 4, 5].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Homologous-pairing protein 2 homolog	transcription factor binding RNA polymerase II-specific DNA-binding transcription factor binding nuclear receptor binding protein binding binding DNA-binding transcription factor binding nuclear androgen receptor binding DNA binding domain binding protein domain specific binding nuclear glucocorticoid receptor binding DNA binding double-stranded DNA binding organic cyclic compound binding nucleic acid binding transcription factor binding RNA polymerase II-specific DNA-binding transcription factor binding nuclear receptor binding protein binding binding DNA-binding transcription factor binding nuclear androgen receptor binding DNA binding domain binding protein domain specific binding nuclear glucocorticoid receptor binding DNA binding double-stranded DNA binding organic cyclic compound binding nucleic acid binding protein-containing complex binding nuclear thyroid hormone receptor binding transcription coactivator activity transcription regulator activity transcription coregulator activity nuclear receptor coactivator activity protein-macromolecule adaptor activity molecular adaptor activity nuclear estrogen receptor binding enzyme regulator activity enzyme activator activity molecular function activator activity molecular function regulator activity recombinase activator activity	homologous recombination sexual reproduction reproductive process meiotic cell cycle process nucleobase-containing compound metabolic process cellular component organization organic substance metabolic process meiosis I meiotic nuclear division cell cycle cellular component organization or biogenesis reciprocal homologous recombination cell cycle process DNA recombination homologous recombination sexual reproduction reproductive process meiotic cell cycle process nucleobase-containing compound metabolic process cellular component organization organic substance metabolic process meiosis I meiotic nuclear division cell cycle cellular component organization or biogenesis reciprocal homologous recombination cell cycle process DNA recombination meiotic cell cycle organelle fission primary metabolic process DNA metabolic process nucleic acid metabolic process reciprocal meiotic recombination organic cyclic compound metabolic process nuclear division organelle organization meiosis I cell cycle process metabolic process cellular process macromolecule metabolic process meiotic strand invasion meiotic strand invasion involved in reciprocal meiotic recombination DNA strand invasion meiotic chromosome segregation chromosome organization chromosome organization involved in meiotic cell cycle homologous chromosome pairing at meiosis nuclear chromosome segregation homologous chromosome segregation chromosome segregation meiotic joint molecule formation regulation of cellular process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II organic substance biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process regulation of transcription by RNA polymerase II regulation of biological process positive regulation of nucleobase-containing compound metabolic process cellular metabolic process regulation of cellular metabolic process positive regulation of transcription by RNA polymerase II positive regulation of RNA metabolic process regulation of gene expression biosynthetic process organic cyclic compound biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process positive regulation of DNA-templated transcription cellular biosynthetic process positive regulation of biological process RNA metabolic process positive regulation of cellular metabolic process RNA biosynthetic process nucleic acid biosynthetic process positive regulation of biosynthetic process positive regulation of cellular process regulation of RNA biosynthetic process regulation of biosynthetic process biological regulation regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process regulation of cellular biosynthetic process positive regulation of RNA biosynthetic process positive regulation of cellular biosynthetic process	membrane-bounded organelle condensed nuclear chromosome intracellular anatomical structure nucleus membrane-enclosed lumen nuclear chromosome chromosome cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle membrane-bounded organelle condensed nuclear chromosome intracellular anatomical structure nucleus membrane-enclosed lumen nuclear chromosome chromosome cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle condensed chromosome non-membrane-bounded organelle nuclear lumen protein-containing complex DNA recombinase auxiliary factor complex enzyme activator complex nucleoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
A	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily
A	IPR010776	Homologous-pairing protein 2, winged helix domain	Domain
A	IPR040661	Leucine zipper with capping helix domain	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.