Top1
entrez
64550
canonical
uniprot
Q9WUL0
canonical
ensembl
ENSRNOG00000047611
resolver
ensp
ENSRNOP00000076575
resolver
enst
ENSRNOT00000113376
resolver
genesymbol
Top1
resolver
uniprot_entry
TOP1_RAT
resolver
amino_acid_sequence
MSGDHLHNDSQIEADFRLNDSHKHKDKHKDREHRHKEHKKDKDKDREKSKHSNSEHKDSEKKHKEKEKTKHKDGSSDKHKDKHKDRDKEKRKEEKIRAAGDAKIKKEKENGFSSPPRIKDEPEDDGYFAPPKEDIKPLKRPRDEDDADYKPKKIKTEDIKKEKKRKLEEEEDGKLKKPKNKDKDKKVAEPDNKKKKAKKEEEQKWKWWEEERYPEGIKWKFLEHKGPVFAPPYEPLPEGVKFYYDGKVMKLSPKAEEVATFFAKMLDHEYTTKEIFRKNFFKDWRKEMTNDEKNTITNLSKCDFTQMSQYFKAQSEARKQMSKEEKLKIKEENEKLLKEYGFCVMDNHRERIANFKIEPPGLFRGRGNHPKMGMLKRRIMPEDIIINCSKDAKVPSPPPGHKWKEVRHDNKVTWLVSWTENIQGSIKYIMLNPSSRIKGEKDWQKYETARRLKKCVDKIRNQYREDWKSKEMKVRQRAVALYFIDKLALRAGNEKEEGETADTVGCCSLRVEHINLHPELDGQEYVVEFDFPGKDSIRYYNKVPVEKRVFKNLQLFMENKQPEDDLFDRLNTGILNKHLQDLMEGLTAKVFRTYNASITLQQQLKELTAPDENVPAKILSYNRANRAVAILCNHQRAPPKTFEKSMMNLQSKIDAKKDQLADARKDLKSAKADAKVMKDAKTKKVVESKKKAVQRLEEQLMKLEVQATDREENKQIALGTSKLNYLDPRITVAWCKKWGVPIEKIYNKTQREKFAWAIDMTDEDYEF
uniprot
proteins
ec_number
5.6.2.1
uniprot
proteins
function
FUNCTION: 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. Regulates the alternative splicing of tissue factor (F3) pre-mRNA in endothelial cells. Involved in the circadian transcription of the core circadian clock component BMAL1 by altering the chromatin structure around the ROR response elements (ROREs) on the BMAL1 promoter. {ECO:0000250|UniProtKB:P11387}.
uniprot
proteins
mass_dalton
90760
uniprot
proteins
post_translational_modification
PTM: Sumoylated. Lys-119 is the main site of sumoylation. Sumoylation plays a role in partitioning TOP1 between nucleoli and nucleoplasm. Levels are dramatically increased on camptothecin (CPT) treatment. {ECO:0000250|UniProtKB:P11387}.; PTM: Phosphorylation at Ser-508 by CK2 increases binding to supercoiled DNA and sensitivity to camptothecin. {ECO:0000250|UniProtKB:P11387}.
uniprot
proteins
protein_family
Type IB topoisomerase family
uniprot
proteins
pubmed
22673903
uniprot
proteins
sequence_length
767
uniprot
proteins
subcellular_location
SUBCELLULAR LOCATION: Nucleus, nucleolus {ECO:0000250|UniProtKB:P11387}. Nucleus, nucleoplasm {ECO:0000250|UniProtKB:P11387}. Note=Diffuse nuclear localization with some enrichment in nucleoli. On CPT treatment, cleared from nucleoli into nucleoplasm. Sumoylated forms found in both nucleoplasm and nucleoli. {ECO:0000250|UniProtKB:P11387}.
uniprot
proteins