Q9NSU2 (TREX1_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
December 14, 2011.
Version 102.
History...
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Web links·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Web links·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Three prime repair exonuclease 1 EC=3.1.11.2 Alternative name(s): 3'-5' exonuclease TREX1 DNase III | ||
| Gene names |
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| Organism | Homo sapiens (Human) | ||
| Taxonomic identifier | 9606 [NCBI] | ||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo |
Protein attributes
| Sequence length | 369 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Exonuclease with a preference for double stranded DNA with mismatched 3' termini. May play a role in DNA repair. Ref.1 Ref.2 |
| Catalytic activity | Exonucleolytic cleavage in the 3'- to 5'-direction to yield nucleoside 5'-phosphates. |
| Cofactor | Magnesium. Required for activity. Substitution with Mn2+ results in partial activity By similarity. |
| Subunit structure | Homodimer. |
| Subcellular location | |
| Tissue specificity | Detected in thymus, spleen, liver, brain, heart, small intestine and colon. Ref.1 Ref.3 |
| Involvement in disease | Defects in TREX1 are the cause of Aicardi-Goutieres syndrome type 1 (AGS1) [MIM:225750]. A form of Aicardi-Goutieres syndrome, a genetically heterogeneous disease characterized by cerebral atrophy, leukoencephalopathy, intracranial calcifications, chronic cerebrospinal fluid (CSF) lymphocytosis, increased CSF alpha-interferon, and negative serologic investigations for common prenatal infection. Clinical features as thrombocytopenia, hepatosplenomegaly and elevated hepatic transaminases along with intermittent fever may erroneously suggest an infective process. Severe neurological dysfunctions manifest in infancy as progressive microcephaly, spasticity, dystonic posturing and profound psychomotor retardation. Death often occurs in early childhood. AGS1 inheritance can be autosomal recessive or dominant. Ref.11 Ref.12 Ref.16 Defects in TREX1 are a cause of susceptibility to systemic lupus erythematosus (SLE) [MIM:152700]. SLE is a chronic, inflammatory and often febrile multisystemic disorder of connective tissue. It affects principally the skin, joints, kidneys and serosal membranes. It is thought to represent a failure of the regulatory mechanisms of the autoimmune system. Ref.14 Defects in TREX1 are the cause of chilblain lupus (CHBL) [MIM:610448]. Chilblain lupus, a rare cutaneous form of systemic lupus erythematosus. Affected individuals present with painful bluish-red papular or nodular lesions of the skin in acral locations precipitated by cold and wet exposure at temperatures less than 10 degrees centigrade. Ref.12 Ref.13 Defects in TREX1 are the cause of cerebro-retinal vasculopathy (CRV) [MIM:192315]. CRV is a microvascular endotheliopathy with middle-age onset. This retinal vasculopathy is characterized by telangiectasias, microaneurysms and retinal capillary obliteration starting in the macula. Diseased cerebral white matter has prominent small infarcts that often coalesce to pseudotumors. Ref.15 |
| Sequence similarities | Belongs to the exonuclease superfamily. TREX family. |
| Caution | The gene for this protein is either identical to or adjacent to that of ATRIP. Some of the mRNAs that encode ATRIP also encode TREX1 in another reading frame. |
| Sequence caution | The sequence AAD48774.2 differs from that shown. Reason: Erroneous initiation. |
Ontologies
Alternative products
| This entry describes 3 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q9NSU2-1) This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 2 (identifier: Q9NSU2-2) The sequence of this isoform differs from the canonical sequence as follows: 1-65: Missing. | ||||||
| Isoform 3 (identifier: Q9NSU2-3) The sequence of this isoform differs from the canonical sequence as follows: 1-55: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 369 | 369 | Three prime repair exonuclease 1 | PRO_0000109868 | |||||
Amino acid modifications | |||||||||
| Modified residue | 133 | 1 | Phosphoserine Ref.10 | ||||||
| Modified residue | 222 | 1 | Phosphoserine Ref.8 | ||||||
| Modified residue | 316 | 1 | Phosphoserine Ref.9 Ref.10 | ||||||
Natural variations | |||||||||
| Alternative sequence | 1 – 65 | 65 | Missing in isoform 2. | VSP_010445 | |||||
| Alternative sequence | 1 – 55 | 55 | Missing in isoform 3. | VSP_010446 | |||||
| Natural variant | 73 | 1 | D → N in CHBL and AGS1; loss of function. Ref.13 Ref.16 | VAR_037948 | |||||
| Natural variant | 169 | 1 | R → H in AGS1 and SLE. Ref.11 Ref.14 | VAR_028319 | |||||
| Natural variant | 213 | 1 | A → V in SLE. Ref.14 | VAR_037949 | |||||
| Natural variant | 255 | 1 | D → DD in AGS1; heterozygous compound with H-169. Ref.11 | VAR_028320 | |||||
| Natural variant | 255 | 1 | D → N in AGS1; autosomal dominant form; does not affect activity. Ref.12 | VAR_032940 | |||||
| Natural variant | 256 | 1 | V → D in AGS1. Ref.11 | VAR_028321 | |||||
| Natural variant | 282 | 1 | G → S in SLE; associated in cis with P-302. Ref.14 | VAR_037950 | |||||
| Natural variant | 295 | 1 | R → S in SLE. Ref.14 | VAR_037951 | |||||
| Natural variant | 302 | 1 | A → P in SLE; associated in cis with S-282. Ref.14 | VAR_037952 | |||||
| Natural variant | 321 | 1 | E → G. Ref.14 Corresponds to variant rs55999987 [ dbSNP | Ensembl ]. | VAR_037953 | |||||
| Natural variant | 345 | 1 | P → L in SLE. Ref.14 | VAR_037954 | |||||
| Natural variant | 360 | 1 | Y → C in SLE. Ref.14 | VAR_037955 | |||||
| Natural variant | 361 | 1 | G → A in SLE. Ref.14 | VAR_037956 | |||||
Experimental info | |||||||||
| Sequence conflict | 320 | 1 | G → R in CAB50866. Ref.1 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "A human DNA editing enzyme homologous to the Escherichia coli DnaQ/MutD protein." Hoess M., Robins P., Naven T.J.P., Pappin D.J.C., Sgouros J., Lindahl T. EMBO J. 18:3868-3875(1999) [PubMed: 10393201] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2), FUNCTION, TISSUE SPECIFICITY, SUBCELLULAR LOCATION. |
| [2] | "Identification and expression of the TREX1 and TREX2 cDNA sequences encoding mammalian 3'-->5' exonucleases." Mazur D.J., Perrino F.W. J. Biol. Chem. 274:19655-19660(1999) [PubMed: 10391904] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 1 AND 3), FUNCTION. |
| [3] | "Structure and expression of the TREX1 and TREX2 3'-->5' exonuclease genes." Mazur D.J., Perrino F.W. J. Biol. Chem. 276:14718-14727(2001) [PubMed: 11278605] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], ALTERNATIVE SPLICING, TISSUE SPECIFICITY. |
| [4] | "Complete sequencing and characterization of 21,243 full-length human cDNAs." Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. Sugano S.Nat. Genet. 36:40-45(2004) [PubMed: 14702039] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1). Tissue: Thymus. |
| [5] | "The full-ORF clone resource of the German cDNA consortium." Bechtel S., Rosenfelder H., Duda A., Schmidt C.P., Ernst U., Wellenreuther R., Mehrle A., Schuster C., Bahr A., Bloecker H., Heubner D., Hoerlein A., Michel G., Wedler H., Koehrer K., Ottenwaelder B., Poustka A., Wiemann S., Schupp I. BMC Genomics 8:399-399(2007) [PubMed: 17974005] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1). Tissue: Testis. |
| [6] | NIEHS SNPs program Submitted (FEB-2002) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]. |
| [7] | "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed: 15489334] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1). Tissue: Eye. |
| [8] | "Global, in vivo, and site-specific phosphorylation dynamics in signaling networks." Olsen J.V., Blagoev B., Gnad F., Macek B., Kumar C., Mortensen P., Mann M. Cell 127:635-648(2006) [PubMed: 17081983] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-222, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [9] | "Evaluation of the low-specificity protease elastase for large-scale phosphoproteome analysis." Wang B., Malik R., Nigg E.A., Korner R. Anal. Chem. 80:9526-9533(2008) [PubMed: 19007248] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-316, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [10] | "A quantitative atlas of mitotic phosphorylation." Dephoure N., Zhou C., Villen J., Beausoleil S.A., Bakalarski C.E., Elledge S.J., Gygi S.P. Proc. Natl. Acad. Sci. U.S.A. 105:10762-10767(2008) [PubMed: 18669648] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-133 AND SER-316, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [11] | "Mutations in the gene encoding the 3'-5' DNA exonuclease TREX1 cause Aicardi-Goutieres syndrome at the AGS1 locus." Crow Y.J., Hayward B.E., Parmar R., Robins P., Leitch A., Ali M., Black D.N., van Bokhoven H., Brunner H.G., Hamel B.C.J., Corry P.C., Cowan F.M., Frints S.G., Klepper J., Livingston J.H., Lynch S.A., Massey R.F., Meritet J.F. Lindahl T.Nat. Genet. 38:917-920(2006) [PubMed: 16845398] [Abstract] Cited for: VARIANTS AGS1 HIS-169; ASP-255 INS AND ASP-256. |
| [12] | "Heterozygous mutations in TREX1 cause familial chilblain lupus and dominant Aicardi-Goutieres syndrome." Rice G., Newman W.G., Dean J., Patrick T., Parmar R., Flintoff K., Robins P., Harvey S., Hollis T., O'Hara A., Herrick A.L., Bowden A.P., Perrino F.W., Lindahl T., Barnes D.E., Crow Y.J. Am. J. Hum. Genet. 80:811-815(2007) [PubMed: 17357087] [Abstract] Cited for: INVOLVEMENT IN CHBL, VARIANT AGS1 ASN-255, CHARACTERIZATION OF VARIANT AGS1 ASN-255. |
| [13] | "A mutation in TREX1 that impairs susceptibility to granzyme A-mediated cell death underlies familial chilblain lupus." Lee-Kirsch M.A., Chowdhury D., Harvey S., Gong M., Senenko L., Engel K., Pfeiffer C., Hollis T., Gahr M., Perrino F.W., Lieberman J., Hubner N. J. Mol. Med. 85:531-537(2007) [PubMed: 17440703] [Abstract] Cited for: VARIANT CHBL ASN-73, CHARACTERIZATION OF VARIANT CHBL ASN-73. |
| [14] | "Mutations in the gene encoding the 3'-5' DNA exonuclease TREX1 are associated with systemic lupus erythematosus." Lee-Kirsch M.A., Gong M., Chowdhury D., Senenko L., Engel K., Lee Y.A., de Silva U., Bailey S.L., Witte T., Vyse T.J., Kere J., Pfeiffer C., Harvey S., Wong A., Koskenmies S., Hummel O., Rohde K., Schmidt R.E. Huebner N.Nat. Genet. 39:1065-1067(2007) [PubMed: 17660818] [Abstract] Cited for: VARIANTS SLE HIS-169; VAL-213; SER-282; SER-295; PRO-302; LEU-345; CYS-360 AND ALA-361, VARIANT GLY-321. |
| [15] | "C-terminal truncations in human 3'-5' DNA exonuclease TREX1 cause autosomal dominant retinal vasculopathy with cerebral leukodystrophy." Richards A., van den Maagdenberg A.M.J.M., Jen J.C., Kavanagh D., Bertram P., Spitzer D., Liszewski M.K., Barilla-Labarca M.-L., Terwindt G.M., Kasai Y., McLellan M., Grand M.G., Vanmolkot K.R.J., de Vries B., Wan J., Kane M.J., Mamsa H., Schaefer R. Atkinson J.P.Nat. Genet. 39:1068-1070(2007) [PubMed: 17660820] [Abstract] Cited for: INVOLVEMENT IN CRV. |
| [16] | "A de novo p.Asp18Asn mutation in TREX1 in a patient with Aicardi-Goutieres syndrome." Haaxma C.A., Crow Y.J., van Steensel M.A., Lammens M.M., Rice G.I., Verbeek M.M., Willemsen M.A. Am. J. Med. Genet. A 152:2612-2617(2010) [PubMed: 20799324] [Abstract] Cited for: VARIANT AGS1 ASN-73. |
| + | Additional computationally mapped references. |
Web resources
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AJ243797 mRNA. Translation: CAB50866.1. AF319566 mRNA. Translation: AAK07613.1. AF319567 mRNA. Translation: AAK07614.1. AF319568 mRNA. Translation: AAK07615.1. AF319569 mRNA. Translation: AAK07616.1. AF151105 mRNA. Translation: AAD48774.2. Different initiation. AK315196 mRNA. Translation: BAG37636.1. AL137745 mRNA. No translation available. AF483777 Genomic DNA. Translation: AAL82504.1. BC023630 mRNA. Translation: AAH23630.1. |
| IPI | IPI00085084. IPI00220019. IPI00411455. |
| PIR | T46299. |
| RefSeq | NP_057465.1. NM_016381.3. NP_338599.1. NM_033629.2. |
| UniGene | Hs.707026. Hs.713742. |
3D structure databases | |
| ProteinModelPortal | Q9NSU2. |
| SMR | Q9NSU2. Positions 61-289. |
| ModBase | Search... |
Protein-protein interaction databases | |
| MINT | MINT-1466830. |
| STRING | Q9NSU2. |
PTM databases | |
| PhosphoSite | Q9NSU2. |
Polymorphism databases | |
| DMDM | 47606216. |
Proteomic databases | |
| PRIDE | Q9NSU2. |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000422277; ENSP00000390478; ENSG00000213689. |
| GeneID | 11277. |
| KEGG | hsa:11277. |
| UCSC | uc003ctj.2. human. uc003ctk.2. human. |
Organism-specific databases | |
| CTD | 11277. |
| GeneCards | GC03P048482. |
| HGNC | HGNC:12269. TREX1. |
| HPA | HPA035437. |
| MIM | 152700. phenotype. 192315. phenotype. 225750. phenotype. 606609. gene. 610448. phenotype. |
| neXtProt | NX_Q9NSU2. |
| Orphanet | 51. Aicardi-Goutieres syndrome. 3421. Cerebroretinal vasculopathy. 90280. Chilblain lupus. 71291. Hereditary vascular retinopathy. 63261. HERNS syndrome. |
| PharmGKB | PA36949. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | prNOG13412. |
| GeneTree | ENSGT00390000012715. |
| HOGENOM | HBG282070. |
| HOVERGEN | HBG079278. |
| InParanoid | Q9NSU2. |
| OMA | WVDAHAR. |
| PhylomeDB | Q9NSU2. |
Gene expression databases | |
| ArrayExpress | Q9NSU2. |
| Bgee | Q9NSU2. |
| CleanEx | HS_TREX1. |
| Genevestigator | Q9NSU2. |
| GermOnline | ENSG00000164053. Homo sapiens. |
Family and domain databases | |
| InterPro | IPR012337. RNaseH-like_dom. [Graphical view] |
| KO | K10790. |
| SUPFAM | SSF53098. RNaseH_fold. 1 hit. |
| ProtoNet | Search... |
Other | |
| NextBio | 42927. |
| SOURCE | Search... |
Entry information
| Entry name | TREX1_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q9NSU2 Secondary accession number(s): B2RCN9 Q9Y4X2 | ||||||||
| Entry history |
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| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | ||||||||
Relevant documents
| Human chromosome 3 Human chromosome 3: entries, gene names and cross-references to MIM |
| Human entries with polymorphisms or disease mutations List of human entries with polymorphisms or disease mutations |
| Human polymorphisms and disease mutations Index of human polymorphisms and disease mutations |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with