SMC1A

Tumour Suppressor
Structural maintenance of chromosomes protein 1A UniProt accession Q14683

Involved in chromosome cohesion during cell cycle and in DNA repair. Central component of cohesin complex. The cohesin complex is required for the cohesion of sister chromatids after DNA replication.

The cohesin complex apparently forms a large proteinaceous ring within which sister chromatids can be trapped. At anaphase, the complex is cleaved and dissociates from chromatin, allowing sister chromatids to segregate. The cohesin complex may also play a role in spindle pole assembly during mitosis.

Involved in DNA repair via its interaction with BRCA1 and its related phosphorylation by ATM, or via its phosphorylation by ATR. Works as a downstream effector both in the ATM/NBS1 branch and in the ATR/MSH2 branch of S-phase checkpoint

Source: UniProt

Forms a heterodimer with SMC3 in cohesin complexes (PubMed:22628566). Cohesin complexes are composed of the SMC1 (SMC1A or SMC1B) and SMC3 heterodimer attached via their SMC hinge domain, RAD21 which link them, and one STAG protein (STAG1, STAG2 or STAG3), which interacts with RAD21 (PubMed:11076961, PubMed:22628566, PubMed:32409525). In germ cell cohesin complexes, SMC1A is mutually exclusive with SMC1B (By similarity).

Interacts with BRCA1 (PubMed:11877377). Found in a complex with CDCA5, SMC3 and RAD21, PDS5A/SCC-112 and PDS5B/APRIN (PubMed:15837422). Interacts with NDC80 (PubMed:10409732, PubMed:9295362).

Interacts with BRAT1 (PubMed:22977523). Found in a complex containing POLE and SMC3. Interacts with RPGR, STAG3 and SYCP2 (By similarity).

The cohesin complex interacts with the cohesin loading complex subunits NIPBL/Scc2 (via HEAT repeats) and MAU2/Scc4 (PubMed:22628566). NIPBL directly contacts all members of the complex, RAD21, SMC1A/B, SMC3 and STAG1 (PubMed:22628566, PubMed:32409525)

Source: UniProt
Nucleus, Chromosome, Chromosome, centromere, kinetochore
Source: UniProt

The flexible SMC hinge domain, which separates the large intramolecular coiled coil regions, allows the heterotypic interaction with the corresponding domain of SMC3, forming a V-shaped heterodimer. The two heads of the heterodimer are then connected by different ends of the cleavable RAD21 protein, forming a ring structure (By similarity)

Source: UniProt
  • Cornelia de Lange syndrome 2 (CDLS2)

    A form of Cornelia de Lange syndrome, a clinically heterogeneous developmental disorder associated with malformations affecting multiple systems. Characterized by facial dysmorphisms, abnormal hands and feet, growth delay, cognitive retardation, hirsutism, gastroesophageal dysfunction and cardiac, ophthalmologic and genitourinary anomalies.

  • Developmental and epileptic encephalopathy 85 with or without midline brain defects (DEE85)

    An X-linked form of epileptic encephalopathy, a heterogeneous group of severe early-onset epilepsies characterized by refractory seizures, neurodevelopmental impairment, and poor prognosis. Development is normal prior to seizure onset, after which cognitive and motor delays become apparent. DEE85 is characterized by onset of severe refractory seizures in the first year of life, global developmental delay with impaired intellectual development and poor or absent speech, and dysmorphic facial features.

    Many patients have midline brain defects on brain imaging.

Source: UniProt

Click a pathway to open the interactive Reactome viewer.

Pathway list and interactive viewer: Reactome

Synthetic Lethal Network

Genes with an experimentally identified or computationally predicted synthetic-lethal relationship to SMC1A, aggregated across our SSL data sources. Click any partner node to view that gene’s page.

Nodes and edges are coloured by the SSL data source. Partners appearing in more than one source are shown in grey.

BioGRID SLOrth SynLethDB MexDrugs Multi-source
Sources: BioGRID, SLOrth, SynLethDB, MexDrugs

Clinical Trials

Total Trials Found: 1

NCT ID Condition Brief Title Phase Status
NCT01793168 Rare Disorders, Undiagnosed Disorders, Disorders of Unknown Prevalence, Cornelia De Lange Syndrome, Prenatal Benign Hypophosphatasia, Perinatal Lethal Hypophosphatasia, Odontohypophosphatasia, Adult Hypophosphatasia, Childhood-onset Hypophosphatasia, Infantile Hypophosphatasia, Hypophosphatasia, Kabuki Syndrome, Bohring-Opitz Syndrome, Narcolepsy Without Cataplexy, Narcolepsy-cataplexy, Hypersomnolence Disorder, Idiopathic Hypersomnia Without Long Sleep Time, Idiopathic Hypersomnia With Long Sleep Time, Idiopathic Hypersomnia, Kleine-Levin Syndrome, Kawasaki Disease, Leiomyosarcoma, Leiomyosarcoma of the Corpus Uteri, Leiomyosarcoma of the Cervix Uteri, Leiomyosarcoma of Small Intestine, Acquired Myasthenia Gravis, Addison Disease, Hyperacusis (Hyperacousis), Juvenile Myasthenia Gravis, Transient Neonatal Myasthenia Gravis, Williams Syndrome, Lyme Disease, Myasthenia Gravis, Marinesco Sjogren Syndrome(Marinesco-Sjogren Syndrome), Isolated Klippel-Feil Syndrome, Frasier Syndrome, Denys-Drash Syndrome, Beckwith-Wiedemann Syndrome, Emanuel Syndrome, Isolated Aniridia, Axenfeld-Rieger Syndrome, Aniridia-intellectual Disability Syndrome, Aniridia - Renal Agenesis - Psychomotor Retardation, Aniridia - Ptosis - Intellectual Disability - Familial Obesity, Aniridia - Cerebellar Ataxia - Intellectual Disability, Aniridia - Absent Patella, Aniridia, Peters Anomaly - Cataract, Peters Anomaly, Potocki-Shaffer Syndrome, Silver-Russell Syndrome Due to Maternal Uniparental Disomy of Chromosome 11, Silver-Russell Syndrome Due to Imprinting Defect of 11p15, Silver-Russell Syndrome Due to 11p15 Microduplication, Syndromic Aniridia, WAGR Syndrome, Wolf-Hirschhorn Syndrome, 4p16.3 Microduplication Syndrome, 4p Deletion Syndrome, Non-Wolf-Hirschhorn Syndrome, Autosomal Recessive Stickler Syndrome, Stickler Syndrome Type 2, Stickler Syndrome Type 1, Stickler Syndrome, Mucolipidosis Type 4, X-linked Spinocerebellar Ataxia Type 4, X-linked Spinocerebellar Ataxia Type 3, X-linked Intellectual Disability - Ataxia - Apraxia, X-linked Progressive Cerebellar Ataxia, X-linked Non Progressive Cerebellar Ataxia, X-linked Cerebellar Ataxia, Vitamin B12 Deficiency Ataxia, Toxic Exposure Ataxia, Unclassified Autosomal Dominant Spinocerebellar Ataxia, Thyroid Antibody Ataxia, Sporadic Adult-onset Ataxia of Unknown Etiology, Spinocerebellar Ataxia With Oculomotor Anomaly, Spinocerebellar Ataxia With Epilepsy, Spinocerebellar Ataxia With Axonal Neuropathy Type 2, Spinocerebellar Ataxia Type 8, Spinocerebellar Ataxia Type 7, Spinocerebellar Ataxia Type 6, Spinocerebellar Ataxia Type 5, Spinocerebellar Ataxia Type 4, Spinocerebellar Ataxia Type 37, Spinocerebellar Ataxia Type 36, Spinocerebellar Ataxia Type 35, Spinocerebellar Ataxia Type 34, Spinocerebellar Ataxia Type 32, Spinocerebellar Ataxia Type 31, Spinocerebellar Ataxia Type 30, Spinocerebellar Ataxia Type 3, Spinocerebellar Ataxia Type 29, Spinocerebellar Ataxia Type 28, Spinocerebellar Ataxia Type 27, Spinocerebellar Ataxia Type 26, Spinocerebellar Ataxia Type 25, Spinocerebellar Ataxia Type 23, Spinocerebellar Ataxia Type 22, Spinocerebellar Ataxia Type 21, Spinocerebellar Ataxia Type 20, Spinocerebellar Ataxia Type 2, Spinocerebellar Ataxia Type 19/22, Spinocerebellar Ataxia Type 18, Spinocerebellar Ataxia Type 17, Spinocerebellar Ataxia Type 16, Spinocerebellar Ataxia Type 15/16, Spinocerebellar Ataxia Type 14, Spinocerebellar Ataxia Type 13, Spinocerebellar Ataxia Type 12, Spinocerebellar Ataxia Type 11, Spinocerebellar Ataxia Type 10, Spinocerebellar Ataxia Type 1 With Axonal Neuropathy, Spinocerebellar Ataxia Type 1, Spinocerebellar Ataxia - Unknown, Spinocerebellar Ataxia - Dysmorphism, Non Progressive Epilepsy and/or Ataxia With Myoclonus as a Major Feature, Spasticity-ataxia-gait Anomalies Syndrome, Spastic Ataxia With Congenital Miosis, Spastic Ataxia - Corneal Dystrophy, Spastic Ataxia, Rare Hereditary Ataxia, Rare Ataxia, Recessive Mitochondrial Ataxia Syndrome, Progressive Epilepsy and/or Ataxia With Myoclonus as a Major Feature, Posterior Column Ataxia - Retinitis Pigmentosa, Post-Stroke Ataxia, Post-Head Injury Ataxia, Post Vaccination Ataxia, Polyneuropathy - Hearing Loss - Ataxia - Retinitis Pigmentosa - Cataract, Muscular Atrophy - Ataxia - Retinitis Pigmentosa - Diabetes Mellitus, Non-hereditary Degenerative Ataxia, Paroxysmal Dystonic Choreathetosis With Episodic Ataxia and Spasticity, Olivopontocerebellar Atrophy - Deafness, NARP Syndrome, Myoclonus - Cerebellar Ataxia - Deafness, Multiple System Atrophy, Parkinsonian Type, Multiple System Atrophy, Cerebellar Type, Multiple System Atrophy, Maternally-inherited Leigh Syndrome, Machado-Joseph Disease Type 3, Machado-Joseph Disease Type 2, Machado-Joseph Disease Type 1, Leigh Syndrome, Late-onset Ataxia With Dementia, Infection or Post Infection Ataxia, GAD Ataxia, Hereditary Episodic Ataxia, Gliadin/Gluten Ataxia, Friedreich Ataxia, Fragile X-associated Tremor/Ataxia Syndrome, Familial Paroxysmal Ataxia, Exposure to Medications Ataxia, Episodic Ataxia With Slurred Speech, Episodic Ataxia Unknown Type, Episodic Ataxia Type 7, Episodic Ataxia Type 6, Episodic Ataxia Type 5, Episodic Ataxia Type 4, Episodic Ataxia Type 3, Episodic Ataxia Type 1, Epilepsy and/or Ataxia With Myoclonus as Major Feature, Early-onset Spastic Ataxia-neuropathy Syndrome, Early-onset Progressive Neurodegeneration - Blindness - Ataxia - Spasticity, Early-onset Cerebellar Ataxia With Retained Tendon Reflexes, Early-onset Ataxia With Dementia, Childhood-onset Autosomal Recessive Slowly Progressive Spinocerebellar Ataxia, Dilated Cardiomyopathy With Ataxia, Cataract - Ataxia - Deafness, Cerebellar Ataxia, Cayman Type, Cerebellar Ataxia With Peripheral Neuropathy, Cerebellar Ataxia - Hypogonadism, Cerebellar Ataxia - Ectodermal Dysplasia, Cerebellar Ataxia - Areflexia - Pes Cavus - Optic Atrophy - Sensorineural Hearing Loss, Brain Tumor Ataxia, Brachydactyly - Nystagmus - Cerebellar Ataxia, Benign Paroxysmal Tonic Upgaze of Childhood With Ataxia, Autosomal Recessive Syndromic Cerebellar Ataxia, Autosomal Recessive Spastic Ataxia With Leukoencephalopathy, Autosomal Recessive Spastic Ataxia of Charlevoix-Saguenay, Autosomal Recessive Spastic Ataxia - Optic Atrophy - Dysarthria, Autosomal Recessive Spastic Ataxia, Autosomal Recessive Metabolic Cerebellar Ataxia, Autosomal Dominant Spinocerebellar Ataxia Due to Repeat Expansions That do Not Encode Polyglutamine, Autosomal Recessive Ataxia, Beauce Type, Autosomal Recessive Ataxia Due to Ubiquinone Deficiency, Autosomal Recessive Ataxia Due to PEX10 Deficiency, Autosomal Recessive Degenerative and Progressive Cerebellar Ataxia, Autosomal Recessive Congenital Cerebellar Ataxia Due to MGLUR1 Deficiency, Autosomal Recessive Congenital Cerebellar Ataxia Due to GRID2 Deficiency, Autosomal Recessive Congenital Cerebellar Ataxia, Autosomal Recessive Cerebellar Ataxia-pyramidal Signs-nystagmus-oculomotor Apraxia Syndrome, Autosomal Recessive Cerebellar Ataxia-epilepsy-intellectual Disability Syndrome Due to WWOX Deficiency, Autosomal Recessive Cerebellar Ataxia-epilepsy-intellectual Disability Syndrome Due to TUD Deficiency, Autosomal Recessive Cerebellar Ataxia-epilepsy-intellectual Disability Syndrome Due to KIAA0226 Deficiency, Autosomal Recessive Cerebellar Ataxia-epilepsy-intellectual Disability Syndrome, Autosomal Recessive Cerebellar Ataxia With Late-onset Spasticity, Autosomal Recessive Cerebellar Ataxia Due to STUB1 Deficiency, Autosomal Recessive Cerebellar Ataxia Due to a DNA Repair Defect, Autosomal Recessive Cerebellar Ataxia - Saccadic Intrusion, Autosomal Recessive Cerebellar Ataxia - Psychomotor Retardation, Autosomal Recessive Cerebellar Ataxia - Blindness - Deafness, Autosomal Recessive Cerebellar Ataxia, Autosomal Dominant Spinocerebellar Ataxia Due to a Polyglutamine Anomaly, Autosomal Dominant Spinocerebellar Ataxia Due to a Point Mutation, Autosomal Dominant Spinocerebellar Ataxia Due to a Channelopathy, Autosomal Dominant Spastic Ataxia Type 1, Autosomal Dominant Spastic Ataxia, Autosomal Dominant Optic Atrophy, Ataxia-telangiectasia Variant, Ataxia-telangiectasia, Autosomal Dominant Cerebellar Ataxia, Deafness and Narcolepsy, Autosomal Dominant Cerebellar Ataxia Type 4, Autosomal Dominant Cerebellar Ataxia Type 3, Autosomal Dominant Cerebellar Ataxia Type 2, Autosomal Dominant Cerebellar Ataxia Type 1, Autosomal Dominant Cerebellar Ataxia, Ataxia-telangiectasia-like Disorder, Ataxia With Vitamin E Deficiency, Ataxia With Dementia, Ataxia - Oculomotor Apraxia Type 1, Ataxia - Other, Ataxia - Genetic Diagnosis - Unknown, Acquired Ataxia, Adult-onset Autosomal Recessive Cerebellar Ataxia, Alcohol Related Ataxia, Multiple Endocrine Neoplasia, Multiple Endocrine Neoplasia Type II, Multiple Endocrine Neoplasia Type 1, Multiple Endocrine Neoplasia Type 2, Multiple Endocrine Neoplasia, Type IV, Multiple Endocrine Neoplasia, Type 3, Multiple Endocrine Neoplasia (MEN) Syndrome, Multiple Endocrine Neoplasia Type 2B, Multiple Endocrine Neoplasia Type 2A, Atypical Hemolytic Uremic Syndrome, Atypical HUS, Wiedemann-Steiner Syndrome, Breast Implant-Associated Anaplastic Large Cell Lymphoma, Autoimmune/Inflammatory Syndrome Induced by Adjuvants (ASIA), Hemophagocytic Lymphohistiocytosis, Behcet's Disease, Alagille Syndrome, Inclusion Body Myopathy With Early-onset Paget Disease and Frontotemporal Dementia (IBMPFD), Lowe Syndrome, Pitt Hopkins Syndrome, 1p36 Deletion Syndrome, Jansen Type Metaphyseal Chondrodysplasia, Cockayne Syndrome, Chronic Recurrent Multifocal Osteomyelitis, CRMO, Malan Syndrome, Hereditary Sensory and Autonomic Neuropathy Type Ie, VCP Disease, Hypnic Jerking, Sleep Myoclonus, Mollaret Meningitis, Recurrent Viral Meningitis, CRB1, Leber Congenital Amaurosis, Retinitis Pigmentosa, Rare Retinal Disorder, KCNMA1-Channelopathy, Primary Biliary Cirrhosis, ZMYND11, Transient Global Amnesia, Glycogen Storage Disease, Alstrom Syndrome, White Sutton Syndrome, DNM1, EIEE31, Myhre Syndrome, Recurrent Respiratory Papillomatosis, Laryngeal Papillomatosis, Tracheal Papillomatosis, Refsum Disease, Nicolaides Baraitser Syndrome, Leukodystrophy, Tango2, Cauda Equina Syndrome, Rare Gastrointestinal Disorders, Achalasia-Addisonian Syndrome, Achalasia Cardia, Achalasia Icrocephaly Syndrome, Anal Fistula, Congenital Sucrase-Isomaltase Deficiency, Eosinophilic Gastroenteritis, Idiopathic Gastroparesis, Hirschsprung Disease, Rare Inflammatory Bowel Disease, Intestinal Pseudo-Obstruction, Scleroderma, Short Bowel Syndrome, Sacral Agenesis, Sacral Agenesis Syndrome, Caudal Regression, Scheuermann Disease, SMC1A Truncated Mutations (Causing Loss of Gene Function), Cystinosis, Juvenile Nephropathic Cystinosis, Nephropathic Cystinosis, Kennedy Disease, Spinal Bulbar Muscular Atrophy, Warburg Micro Syndrome, Mucolipidoses, Mitochondrial Diseases, Mitochondrial Aminoacyl-tRNA Synthetases, Mt-aaRS Disorders, Hypertrophic Olivary Degeneration, Non-Ketotic Hyperglycinemia, Fish Odor Syndrome, Halitosis, Isolated Congenital Asplenia, Lambert Eaton (LEMS), Biliary Atresia, STAG1 Gene Mutation, Coffin Lowry Syndrome, Borjeson-Forssman-Lehman Syndrome, Blau Syndrome, Arginase 1 Deficiency, HSPB8 Myopathy, Beta-Mannosidosis, TBX4 Syndrome, DHDDS Gene Mutations, MAND-MBD5-Associated Neurodevelopmental Disorder, Constitutional Mismatch Repair Deficiency (CMMRD), SPATA5 Disorder, SPATA5L1 Related Disorder, Acrodysostosis, Multi-systematic Smooth Muscle Dysfunction Syndrome, CRELD1 (Cysteine Rich With EGF Like Domains 1), GNB1 Syndrome, Pyruvate Dehydrogenase Complex Deficiency Disease, Beta Mannosidosis, Kbg Syndrome, Labrune Syndrome, Metachromatic Leukodystrophy (MLD), Moyamoya Disease, OPHN1 Syndrome, Oculopharyngeal Muscular Dystrophy (OPMD), TUBB3 Mutation, WOREE (WWOX-related Epileptic Encephalopathy, SCAR12, Skraban-Deardorff Syndrome, Hereditary Myopathy With Early Respiratory Failure Rare Disease Patient Registry & Natural History Study - Coordination of Rare Diseases at Sanford N/A RECRUITING