Annotations: 4S3H

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D	PhyH	e4s3hD1	A: a/b three-layered sandwiches	X: Rossmann-like	H: 26S proteasome subunit Rpn2 C-terminal domain	T: 26S proteasome subunit Rpn2 C-terminal domain	F: PhyH	ECOD (v294.1)
C	PhyH	e4s3hC1	A: a/b three-layered sandwiches	X: Rossmann-like	H: 26S proteasome subunit Rpn2 C-terminal domain	T: 26S proteasome subunit Rpn2 C-terminal domain	F: PhyH	ECOD (v294.1)
B	PhyH	e4s3hB1	A: a/b three-layered sandwiches	X: ssDNA-binding transcriptional regulator domain-like	H: ssDNA-binding transcriptional regulator domain	T: ssDNA-binding transcriptional regulator domain	F: PhyH	ECOD (v294.1)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Mdb1	-	cellular response to stimulus regulation of cellular process regulation of cell cycle phase transition DNA damage checkpoint signaling response to stimulus signaling G2/M transition of mitotic cell cycle mitotic G2 DNA damage checkpoint signaling negative regulation of biological process negative regulation of cell cycle cell cycle phase transition intracellular signal transduction mitotic cell cycle negative regulation of mitotic cell cycle mitotic G2/M transition checkpoint cellular response to stimulus regulation of cellular process regulation of cell cycle phase transition DNA damage checkpoint signaling response to stimulus signaling G2/M transition of mitotic cell cycle mitotic G2 DNA damage checkpoint signaling negative regulation of biological process negative regulation of cell cycle cell cycle phase transition intracellular signal transduction mitotic cell cycle negative regulation of mitotic cell cycle mitotic G2/M transition checkpoint cell communication regulation of mitotic cell cycle mitotic DNA integrity checkpoint signaling cellular response to stress response to stress mitotic DNA damage checkpoint signaling negative regulation of cellular process negative regulation of cell cycle phase transition signal transduction cell cycle regulation of cell cycle cell cycle process cell cycle G2/M phase transition regulation of biological process negative regulation of mitotic cell cycle phase transition regulation of G2/M transition of mitotic cell cycle regulation of cell cycle process biological regulation DNA integrity checkpoint signaling regulation of cell cycle G2/M phase transition negative regulation of cell cycle process cell cycle checkpoint signaling regulation of mitotic cell cycle phase transition mitotic cell cycle checkpoint signaling mitotic cell cycle process DNA damage response negative regulation of cell cycle G2/M phase transition signal transduction in response to DNA damage cellular process negative regulation of G2/M transition of mitotic cell cycle mitotic cell cycle phase transition	intracellular anatomical structure mitotic spindle spindle intracellular membraneless organelle intracellular organelle mitotic spindle midzone cellular anatomical structure cytoskeleton organelle membraneless organelle spindle midzone microtubule cytoskeleton site of double-strand break site of DNA damage intracellular anatomical structure mitotic spindle spindle intracellular membraneless organelle intracellular organelle mitotic spindle midzone cellular anatomical structure cytoskeleton organelle membraneless organelle spindle midzone microtubule cytoskeleton site of double-strand break site of DNA damage chromosome membrane-bounded organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR001357	BRCT domain	Domain
A, B, C, D	IPR036420	BRCT domain superfamily	Homologous Superfamily
A, B, C, D	IPR051579	DNA Damage Response and Transcriptional Regulator	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.