7WU8 | pdb_00007wu8

Crystal structure of Harmonin-homology domain 2 (HHD2) of human RTEL1

External Resource: Annotation

Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G	PF23116	RTEL1, HHD domain (HHD_RTEL1)	RTEL1, HHD domain	RTEL1 is an essential DNA helicase that disassembles a variety of DNA secondary structures to facilitate DNA replication, repair, and recombination processes, and to maintain telomere integrity. It is also required for the export and the correct cyto ...	RTEL1 is an essential DNA helicase that disassembles a variety of DNA secondary structures to facilitate DNA replication, repair, and recombination processes, and to maintain telomere integrity. It is also required for the export and the correct cytoplasmic trafficking of the small nuclear (sn) RNA pre-U2, a component of the major spliceosome complex [1]. This entry represents the harmonin homology domain which is predicted to mediate protein-protein In human and some other mammals as well as in some fish species, this domain is found as two tandem ones, referred to as HHD1 and HHD2 (or HNL1/2) [2, 3], while in plants and arthropods it is found as a single domain. It has been shown that the HHD1 domain mediates interaction of RTEL1 with SLX4 which prevents replication-transcription collision through R-loop dissolution [2]. The HHD2 domain of RTEL1 interacts with RPA, which binds to single-stranded DNA with high affinity in a sequence-independent manner [3]. Mutations in these domain are associated with associated with Hoyeraal-Hreidarsson syndrome and pulmonary fibrosis [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G	Regulator of telomere elongation helicase 1	ATP-dependent activity, acting on DNA nucleic acid conformation isomerase activity isomerase activity DNA helicase activity catalytic activity, acting on DNA catalytic activity, acting on a nucleic acid helicase activity catalytic activity macromolecular conformation isomerase activity ATP-dependent activity iron-sulfur cluster binding binding 4 iron, 4 sulfur cluster binding metal cluster binding ATP-dependent activity, acting on DNA nucleic acid conformation isomerase activity isomerase activity DNA helicase activity catalytic activity, acting on DNA catalytic activity, acting on a nucleic acid helicase activity catalytic activity macromolecular conformation isomerase activity ATP-dependent activity iron-sulfur cluster binding binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding DNA binding nucleic acid binding pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides protein binding DNA polymerase binding enzyme binding cation binding metal ion binding	cellular response to stimulus regulation of DNA recombination regulation of cellular process regulation of double-strand break repair response to stimulus regulation of cellular response to stress regulation of primary metabolic process nucleobase-containing compound metabolic process cellular response to stress response to stress regulation of response to stress recombinational repair regulation of nucleobase-containing compound metabolic process double-strand break repair via homologous recombination cellular response to stimulus regulation of DNA recombination regulation of cellular process regulation of double-strand break repair response to stimulus regulation of cellular response to stress regulation of primary metabolic process nucleobase-containing compound metabolic process cellular response to stress response to stress regulation of response to stress recombinational repair regulation of nucleobase-containing compound metabolic process double-strand break repair via homologous recombination DNA repair double-strand break repair regulation of biological process DNA recombination biological regulation primary metabolic process DNA metabolic process regulation of macromolecule metabolic process nucleic acid metabolic process regulation of DNA repair regulation of double-strand break repair via homologous recombination DNA damage response regulation of response to stimulus metabolic process cellular process macromolecule metabolic process regulation of metabolic process regulation of DNA metabolic process telomere maintenance in response to DNA damage telomere organization chromosome organization telomere maintenance cellular component organization organelle organization cellular component organization or biogenesis DNA strand displacement DNA-templated DNA replication DNA-templated DNA replication maintenance of fidelity DNA replication replication fork processing positive regulation of organelle organization regulation of telomere maintenance regulation of cellular component organization positive regulation of cellular component organization positive regulation of biological process telomere maintenance via telomere lengthening positive regulation of metabolic process positive regulation of telomere maintenance via telomere lengthening positive regulation of macromolecule metabolic process positive regulation of cellular process positive regulation of telomere maintenance regulation of chromosome organization regulation of telomere maintenance via telomere lengthening regulation of organelle organization positive regulation of chromosome organization positive regulation of DNA metabolic process negative regulation of telomere maintenance negative regulation of biological process negative regulation of chromosome organization negative regulation of telomere maintenance in response to DNA damage negative regulation of nucleobase-containing compound metabolic process negative regulation of cellular component organization negative regulation of metabolic process negative regulation of cellular process negative regulation of macromolecule metabolic process negative regulation of response to stimulus regulation of telomere maintenance in response to DNA damage negative regulation of organelle organization negative regulation of DNA metabolic process telomeric loop disassembly regulation of telomeric loop disassembly positive regulation of telomeric loop disassembly negative regulation of DNA recombination regulation of t-circle formation cellular component biogenesis cellular component assembly formation of extrachromosomal circular DNA regulation of cellular component biogenesis negative regulation of t-circle formation telomere maintenance via telomere trimming t-circle formation nuclear DNA replication cell cycle DNA replication mitotic cell cycle telomere maintenance via semi-conservative replication mitotic telomere maintenance via semi-conservative replication cell cycle cell cycle process mitotic cell cycle process positive regulation of telomere capping telomere capping regulation of telomere capping	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck ribonucleoprotein granule intracellular organelle nuclear body cellular anatomical structure nucleoplasm organelle lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck ribonucleoprotein granule intracellular organelle nuclear body cellular anatomical structure nucleoplasm organelle lumen organelle membraneless organelle supramolecular complex nuclear ribonucleoprotein granule nuclear lumen nuclear membrane membrane endomembrane system organelle envelope nuclear envelope organelle membrane chromosome chromosome, telomeric region chromosomal region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G	IPR045028	Helicase superfamily 1/2, DinG/Rad3-like	Family
A, B, C, D, E A, B, C, D, E, F, G	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G	IPR030845	Regulator of telomere elongation helicase 1	Family
A, B, C, D, E A, B, C, D, E, F, G	IPR006554	Helicase-like, DEXD box c2 type	Domain
A, B, C, D, E A, B, C, D, E, F, G	IPR049909	Rtel1, harmonin homology domain	Domain
A, B, C, D, E A, B, C, D, E, F, G	IPR006555	ATP-dependent helicase, C-terminal	Domain
A, B, C, D, E A, B, C, D, E, F, G	IPR010614	RAD3-like helicase, DEAD	Domain
A, B, C, D, E A, B, C, D, E, F, G	IPR014013	Helicase superfamily 1/2, ATP-binding domain, DinG/Rad3-type	Domain
A, B, C, D, E A, B, C, D, E, F, G	IPR013020	ATP-dependent helicase Rad3/Chl1-like	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D, E A, B, C, D, E, F, G	Pharos: Q9NZ71	dyskeratosis congenita idiopathic pulmonary fibrosis pulmonary fibrosis and/or bone marrow failure, Telomere-related, 3 dyskeratosis congenita, autosomal recessive 5 malignant glioma mixed glioma ulcerative colitis inflammatory bowel disease Lung Neoplasms marginal zone lymphoma acute interstitial pneumonia brain glioma congenital anemia idiopathic interstitial pneumonia intellectual disability dyskeratosis congenita idiopathic pulmonary fibrosis pulmonary fibrosis and/or bone marrow failure, Telomere-related, 3 dyskeratosis congenita, autosomal recessive 5 malignant glioma mixed glioma ulcerative colitis inflammatory bowel disease Lung Neoplasms marginal zone lymphoma acute interstitial pneumonia brain glioma congenital anemia idiopathic interstitial pneumonia intellectual disability allergic rhinitis colorectal adenoma Crohn disease glioblastoma hematopoietic and lymphoid system neoplasm lung benign neoplasm prostate carcinoma atopic eczema colorectal cancer cutaneous melanoma glioma Hoyeraal-Hreidarsson syndrome

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.