Annotations: 9CHL

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
I [auth G]	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8082923	3000119	SCOP2B (2022-06-29)
G [auth E]	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8082923	3000119	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8082923	3000119	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8082923	3000119	SCOP2B (2022-06-29)
J [auth H]	SCOP2B Superfamily	RelE-like	8102970	3000741	SCOP2B (2022-06-29)
H [auth F]	SCOP2B Superfamily	RelE-like	8102970	3000741	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	RelE-like	8102970	3000741	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	RelE-like	8102970	3000741	SCOP2B (2022-06-29)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C, G [auth E], I [auth G]	Antitoxin HigA	protein heterodimerization activity protein binding binding protein dimerization activity DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding double-stranded DNA binding nucleic acid binding transcription regulatory region nucleic acid binding transcription regulator activity DNA-binding transcription factor activity molecular sequestering activity protein heterodimerization activity protein binding binding protein dimerization activity DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding double-stranded DNA binding nucleic acid binding transcription regulatory region nucleic acid binding transcription regulator activity DNA-binding transcription factor activity molecular sequestering activity toxin sequestering activity	regulation of cellular process RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process biological regulation primary metabolic process regulation of cellular process RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process biological regulation primary metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process cellular process metabolic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription macromolecule metabolic process regulation of metabolic process	-
E [auth I], K	DNA (5'-D(GPTPAPTPTPAPCPAPCPAPCPCPAPTPGPTPAPAPTPAP*C)-3')	-	-	-
F [auth J], L	DNA (5'-D(GPTPAPTPTPAPCPAPTPGPGPTPGPTPGPTPAPAPTPAP*C)-3')	-	-	-
B, D, H [auth F], J [auth H]	Endoribonuclease HigB	endonuclease activity nuclease activity catalytic activity, acting on RNA RNA endonuclease activity catalytic activity, acting on a nucleic acid RNA nuclease activity catalytic activity hydrolase activity RNA binding binding nucleic acid binding mRNA binding translation regulator activity translation repressor activity endonuclease activity nuclease activity catalytic activity, acting on RNA RNA endonuclease activity catalytic activity, acting on a nucleic acid RNA nuclease activity catalytic activity hydrolase activity RNA binding binding nucleic acid binding mRNA binding translation regulator activity translation repressor activity ribonucleoprotein complex binding protein-containing complex binding ribosome binding	catabolic process RNA metabolic process primary metabolic process nucleic acid metabolic process macromolecule catabolic process nucleobase-containing compound catabolic process nucleobase-containing compound metabolic process nucleic acid catabolic process metabolic process cellular process macromolecule metabolic process RNA catabolic process plasmid maintenance regulation of biological process catabolic process RNA metabolic process primary metabolic process nucleic acid metabolic process macromolecule catabolic process nucleobase-containing compound catabolic process nucleobase-containing compound metabolic process nucleic acid catabolic process metabolic process cellular process macromolecule metabolic process RNA catabolic process plasmid maintenance regulation of biological process regulation of growth regulation of cellular component organization regulation of cellular process negative regulation of biological process biological regulation growth negative regulation of cell growth regulation of cell growth cell growth cellular component organization negative regulation of growth negative regulation of cellular process cellular component organization or biogenesis protein biosynthetic process regulation of primary metabolic process post-transcriptional regulation of gene expression negative regulation of translation protein metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process regulation of biosynthetic process regulation of protein metabolic process negative regulation of metabolic process regulation of macromolecule metabolic process gene expression translation macromolecule biosynthetic process regulation of gene expression negative regulation of gene expression biosynthetic process negative regulation of biosynthetic process regulation of translation negative regulation of macromolecule biosynthetic process regulation of macromolecule biosynthetic process regulation of metabolic process negative regulation of cell population proliferation cell population proliferation regulation of cell population proliferation	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C, G [auth E], I [auth G]	IPR001387	Cro/C1-type, helix-turn-helix domain	Domain
A, C, G [auth E], I [auth G]	IPR013430	Toxin-antitoxin system, antidote protein, HigA	Family
A, C, G [auth E], I [auth G]	IPR010982	Lambda repressor-like, DNA-binding domain superfamily	Homologous Superfamily
B, D, H [auth F], J [auth H]	IPR007711	Toxin HigB-1	Family
B, D, H [auth F], J [auth H]	IPR035093	Toxin-antitoxin system, RelE/ParE toxin domain superfamily	Homologous Superfamily

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.