Tag | Content |
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UniProt Accession | TOP1_HUMAN; P11387; |
Entrez ID | 7150 |
GenBank Protein ID | |
GenBank Nucleotide ID | |
Protein Name | DNA topoisomerase 1 (EC 5.99.1.2) (DNA topoisomerase I) |
Gene Name | TOP1 |
Organism | Homo sapiens |
NCBI Taxa ID | 9606 |
Functional Description | Releases the supercoiling and torsional tension of DNA introduced during the DNA replication and transcription by transiently cleaving and rejoining one strand of the DNA duplex. Introduces a single-strand break via transesterification at a target site in duplex DNA. The scissile phosphodiester is attacked by the catalytic tyrosine of the enzyme, resulting in the formation of a DNA-(3'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 5'-OH DNA strand. The free DNA strand then rotates around the intact phosphodiester bond on the opposing strand, thus removing DNA supercoils. Finally, in the religation step, the DNA 5'-OH attacks the covalent intermediate to expel the active-site tyrosine and restore the DNA phosphodiester backbone (By similarity). Regulates the alternative splicing of tissue factor (F3) pre-mRNA in endothelial cells. Involved in the circadian transcription of the core circadian clock component ARNTL/BMAL1 by altering the chromatin structure around the ROR response elements (ROREs) on the ARNTL/BMAL1 promoter. |
Sequence (Fasta) | MSGDHLHNDS QIEADFRLND SHKHKDKHKD REHRHKEHKK EKDREKSKHS NSEHKDSEKK 60 HKEKEKTKHK DGSSEKHKDK HKDRDKEKRK EEKVRASGDA KIKKEKENGF SSPPQIKDEP 120 EDDGYFVPPK EDIKPLKRPR DEDDADYKPK KIKTEDTKKE KKRKLEEEED GKLKKPKNKD 180 KDKKVPEPDN KKKKPKKEEE QKWKWWEEER YPEGIKWKFL EHKGPVFAPP YEPLPENVKF 240 YYDGKVMKLS PKAEEVATFF AKMLDHEYTT KEIFRKNFFK DWRKEMTNEE KNIITNLSKC 300 DFTQMSQYFK AQTEARKQMS KEEKLKIKEE NEKLLKEYGF CIMDNHKERI ANFKIEPPGL 360 FRGRGNHPKM GMLKRRIMPE DIIINCSKDA KVPSPPPGHK WKEVRHDNKV TWLVSWTENI 420 QGSIKYIMLN PSSRIKGEKD WQKYETARRL KKCVDKIRNQ YREDWKSKEM KVRQRAVALY 480 FIDKLALRAG NEKEEGETAD TVGCCSLRVE HINLHPELDG QEYVVEFDFL GKDSIRYYNK 540 VPVEKRVFKN LQLFMENKQP EDDLFDRLNT GILNKHLQDL MEGLTAKVFR TYNASITLQQ 600 QLKELTAPDE NIPAKILSYN RANRAVAILC NHQRAPPKTF EKSMMNLQTK IDAKKEQLAD 660 ARRDLKSAKA DAKVMKDAKT KKVVESKKKA VQRLEEQLMK LEVQATDREE NKQIALGTSK 720 LNYLDPRITV AWCKKWGVPI EKIYNKTQRE KFAWAIDMAD EDYEF 766 |
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Database | Annotation |
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Cancer Gene Census | AML* |
CTD (Curated) (count: 2) | MESH:D064420
; Drug-Related Side Effects and Adverse Reactions MESH:D009369 ; Neoplasms |
GWASdb (count: 9) (view all) | rs117756447; Carotid intima media thickness; atherosclerosis
rs6029526; Cholesterol, total; coronary artery disease|lipid metabolism disorder|arteriosclerosis rs6029526; LDL cholesterol; atherosclerosis|coronary artery disease rs6029526; Prostate cancer; prostate cancer rs8122094; Coronary heart disease; coronary artery disease rs1997833; Taste perception; sensory system disease |
PTM | Modification Sites |
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Phosphorylation (count: 26) (view all) | 10 GDHLHNDSQIEADFR dbPAF
111 KEKENGFSSPPQIKD dbPAF 112 EKENGFSSPPQIKDE dbPAF 125 DEPEDDGYFVPPKED dbPAF 147 RDEDDADYKPKKIKT dbPAF 2 ******MSGDHLHND dbPAF |
Acetylation (count: 39) (view all) | 117 FSSPPQIKDEPEDDG PLMD
134 VPPKEDIKPLKRPRD PLMD 148 DEDDADYKPKKIKTE PLMD 150 DDADYKPKKIKTEDT PLMD 164 TKKEKKRKLEEEEDG PLMD 172 LEEEEDGKLKKPKNK PLMD |
Ubiquitination (count: 31) (view all) | 148 DEDDADYKPKKIKTE PLMD
218 YPEGIKWKFLEHKGP PLMD 223 KWKFLEHKGPVFAPP PLMD 239 EPLPENVKFYYDGKV PLMD 245 VKFYYDGKVMKLSPK PLMD 252 KVMKLSPKAEEVATF PLMD |
Sumoylation (count: 18) (view all) | 103 ASGDAKIKKEKENGF PLMD
117 FSSPPQIKDEPEDDG PLMD 134 VPPKEDIKPLKRPRD PLMD 148 DEDDADYKPKKIKTE PLMD 153 DYKPKKIKTEDTKKE PLMD 158 KIKTEDTKKEKKRKL PLMD |
Glycation (count: 1) | 223 KWKFLEHKGPVFAPP PLMD |
Methylation (count: 2) | 466 NQYREDWKSKEMKVR PLMD
471 DWKSKEMKVRQRAVA PLMD |
Network | Interaction | ||
---|---|---|---|
A | B | Source | |