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Q9NSU2 (TREX1_HUMAN) Reviewed, UniProtKB/Swiss-Prot

Last modified December 14, 2011. Version 102. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (5) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Web links·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Three prime repair exonuclease 1

EC=3.1.11.2
Alternative name(s):
3'-5' exonuclease TREX1
DNase III
Gene names
Name:TREX1
OrganismHomo sapiens (Human)
Taxonomic identifier9606 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo

Protein attributes

Sequence length369 AA.
Sequence statusComplete.
Protein existenceEvidence 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

Nucleus By similarity Ref.1.

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.

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 keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 369369Three prime repair exonuclease 1
PRO_0000109868

Amino acid modifications

Modified residue1331Phosphoserine Ref.10
Modified residue2221Phosphoserine Ref.8
Modified residue3161Phosphoserine Ref.9 Ref.10

Natural variations

Alternative sequence1 – 6565Missing in isoform 2.
VSP_010445
Alternative sequence1 – 5555Missing in isoform 3.
VSP_010446
Natural variant731D → N in CHBL and AGS1; loss of function. Ref.13 Ref.16
VAR_037948
Natural variant1691R → H in AGS1 and SLE. Ref.11 Ref.14
VAR_028319
Natural variant2131A → V in SLE. Ref.14
VAR_037949
Natural variant2551D → DD in AGS1; heterozygous compound with H-169. Ref.11
VAR_028320
Natural variant2551D → N in AGS1; autosomal dominant form; does not affect activity. Ref.12
VAR_032940
Natural variant2561V → D in AGS1. Ref.11
VAR_028321
Natural variant2821G → S in SLE; associated in cis with P-302. Ref.14
VAR_037950
Natural variant2951R → S in SLE. Ref.14
VAR_037951
Natural variant3021A → P in SLE; associated in cis with S-282. Ref.14
VAR_037952
Natural variant3211E → G. Ref.14
Corresponds to variant rs55999987 [ dbSNP | Ensembl ].
VAR_037953
Natural variant3451P → L in SLE. Ref.14
VAR_037954
Natural variant3601Y → C in SLE. Ref.14
VAR_037955
Natural variant3611G → A in SLE. Ref.14
VAR_037956

Experimental info

Sequence conflict3201G → R in CAB50866. Ref.1

Sequences

Sequence LengthMass (Da)Tools
Isoform 1 [UniParc].

Last modified October 1, 2000. Version 1.
Checksum: 42B79047A9AD9837

FASTA36938,923
        10         20         30         40         50         60 
MGPGARRQGR IVQGRPEMCF CPPPTPLPPL RILTLGTHTP TPCSSPGSAA GTYPTMGSQA 

        70         80         90        100        110        120 
LPPGPMQTLI FFDMEATGLP FSQPKVTELC LLAVHRCALE SPPTSQGPPP TVPPPPRVVD 

       130        140        150        160        170        180 
KLSLCVAPGK ACSPAASEIT GLSTAVLAAH GRQCFDDNLA NLLLAFLRRQ PQPWCLVAHN 

       190        200        210        220        230        240 
GDRYDFPLLQ AELAMLGLTS ALDGAFCVDS ITALKALERA SSPSEHGPRK SYSLGSIYTR 

       250        260        270        280        290        300 
LYGQSPPDSH TAEGDVLALL SICQWRPQAL LRWVDAHARP FGTIRPMYGV TASARTKPRP 

       310        320        330        340        350        360 
SAVTTTAHLA TTRNTSPSLG ESRGTKDLPP VKDPGALSRE GLLAPLGLLA ILTLAVATLY 


GLSLATPGE 

« Hide

Isoform 2 [UniParc].

Checksum: 922048DCC4122124
Show »

FASTA30432,276
Isoform 3 [UniParc].

Checksum: EE8F63B6496D72F4
Show »

FASTA31433,212

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. expand/collapse author list , Yamamoto J., Saito K., Kawai Y., Isono Y., Nakamura Y., Nagahari K., Murakami K., Yasuda T., Iwayanagi T., Wagatsuma M., Shiratori A., Sudo H., Hosoiri T., Kaku Y., Kodaira H., Kondo H., Sugawara M., Takahashi M., Kanda K., Yokoi T., Furuya T., Kikkawa E., Omura Y., Abe K., Kamihara K., Katsuta N., Sato K., Tanikawa M., Yamazaki M., Ninomiya K., Ishibashi T., Yamashita H., Murakawa K., Fujimori K., Tanai H., Kimata M., Watanabe M., Hiraoka S., Chiba Y., Ishida S., Ono Y., Takiguchi S., Watanabe S., Yosida M., Hotuta T., Kusano J., Kanehori K., Takahashi-Fujii A., Hara H., Tanase T.-O., Nomura Y., Togiya S., Komai F., Hara R., Takeuchi K., Arita M., Imose N., Musashino K., Yuuki H., Oshima A., Sasaki N., Aotsuka S., Yoshikawa Y., Matsunawa H., Ichihara T., Shiohata N., Sano S., Moriya S., Momiyama H., Satoh N., Takami S., Terashima Y., Suzuki O., Nakagawa S., Senoh A., Mizoguchi H., Goto Y., Shimizu F., Wakebe H., Hishigaki H., Watanabe T., Sugiyama A., Takemoto M., Kawakami B., Yamazaki M., Watanabe K., Kumagai A., Itakura S., Fukuzumi Y., Fujimori Y., Komiyama M., Tashiro H., Tanigami A., Fujiwara T., Ono T., Yamada K., Fujii Y., Ozaki K., Hirao M., Ohmori Y., Kawabata A., Hikiji T., Kobatake N., Inagaki H., Ikema Y., Okamoto S., Okitani R., Kawakami T., Noguchi S., Itoh T., Shigeta K., Senba T., Matsumura K., Nakajima Y., Mizuno T., Morinaga M., Sasaki M., Togashi T., Oyama M., Hata H., Watanabe M., Komatsu T., Mizushima-Sugano J., Satoh T., Shirai Y., Takahashi Y., Nakagawa K., Okumura K., Nagase T., Nomura N., Kikuchi H., Masuho Y., Yamashita R., Nakai K., Yada T., Nakamura Y., Ohara O., Isogai T., 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. expand/collapse author list , Michaud J.L., Ponsot G., Voit T., Lebon P., Bonthron D.T., Jackson A.P., Barnes D.E., 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. expand/collapse author list , Dominiczak A.F., Gahr M., Hollis T., Perrino F.W., Lieberman J., 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. expand/collapse author list , Stam A.H., Haan J., de Jong P.T.V.M., Storimans C.W., van Schooneveld M.J., Oosterhuis J.A., Gschwendter A., Dichgans M., Kotschet K.E., Hodgkinson S., Hardy T.A., Delatycki M.B., Hajj-Ali R.A., Kothari P.H., Nelson S.F., Frants R.R., Baloh R.W., Ferrari M.D., 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.

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.
IPIIPI00085084.
IPI00220019.
IPI00411455.
PIRT46299.
RefSeqNP_057465.1. NM_016381.3.
NP_338599.1. NM_033629.2.
UniGeneHs.707026.
Hs.713742.

3D structure databases

ProteinModelPortalQ9NSU2.
SMRQ9NSU2. Positions 61-289.
ModBaseSearch...

Protein-protein interaction databases

MINTMINT-1466830.
STRINGQ9NSU2.

PTM databases

PhosphoSiteQ9NSU2.

Polymorphism databases

DMDM47606216.

Proteomic databases

PRIDEQ9NSU2.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblENST00000422277; ENSP00000390478; ENSG00000213689.
GeneID11277.
KEGGhsa:11277.
UCSCuc003ctj.2. human.
uc003ctk.2. human.

Organism-specific databases

CTD11277.
GeneCardsGC03P048482.
HGNCHGNC:12269. TREX1.
HPAHPA035437.
MIM152700. phenotype.
192315. phenotype.
225750. phenotype.
606609. gene.
610448. phenotype.
neXtProtNX_Q9NSU2.
Orphanet51. Aicardi-Goutieres syndrome.
3421. Cerebroretinal vasculopathy.
90280. Chilblain lupus.
71291. Hereditary vascular retinopathy.
63261. HERNS syndrome.
PharmGKBPA36949.
GenAtlasSearch...

Phylogenomic databases

eggNOGprNOG13412.
GeneTreeENSGT00390000012715.
HOGENOMHBG282070.
HOVERGENHBG079278.
InParanoidQ9NSU2.
OMAWVDAHAR.
PhylomeDBQ9NSU2.

Gene expression databases

ArrayExpressQ9NSU2.
BgeeQ9NSU2.
CleanExHS_TREX1.
GenevestigatorQ9NSU2.
GermOnlineENSG00000164053. Homo sapiens.

Family and domain databases

InterProIPR012337. RNaseH-like_dom.
[Graphical view]
KOK10790.
SUPFAMSSF53098. RNaseH_fold. 1 hit.
ProtoNetSearch...

Other

NextBio42927.
SOURCESearch...

Entry information

Entry nameTREX1_HUMAN
AccessionPrimary (citable) accession number: Q9NSU2
Secondary accession number(s): B2RCN9 expand/collapse secondary AC list , Q8TEU2, Q9BPW1, Q9Y4X2
Entry history
Integrated into UniProtKB/Swiss-Prot: May 24, 2004
Last sequence update: October 1, 2000
Last modified: December 14, 2011
This is version 102 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny 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