| UniProt ID | TOP3_YEAST | |
|---|---|---|
| UniProt AC | P13099 | |
| Protein Name | DNA topoisomerase 3 | |
| Gene Name | TOP3 | |
| Organism | Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast). | |
| Sequence Length | 656 | |
| Subcellular Localization | ||
| Protein 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-(5'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 3'-OH DNA strand. The free DNA strand than undergoes passage around the unbroken strand thus removing DNA supercoils. Finally, in the religation step, the DNA 3'-OH attacks the covalent intermediate to expel the active-site tyrosine and restore the DNA phosphodiester backbone (By similarity). Essential for proper chromosome segregation in both meiosis and mitosis. Weakly relaxes negative supercoils and displays a distinct preference for binding single-stranded DNA. The TOP3-SGS1 protein complex may function as a eukaryotic reverse gyrase introducing positive supercoils into extrachromosomal ribosomal DNA rings.. | |
| Protein Sequence | MKVLCVAEKNSIAKAVSQILGGGRSTSRDSGYMYVKNYDFMFSGFPFARNGANCEVTMTSVAGHLTGIDFSHDSHGWGKCAIQELFDAPLNEIMNNNQKKIASNIKREARNADYLMIWTDCDREGEYIGWEIWQEAKRGNRLIQNDQVYRAVFSHLERQHILNAARNPSRLDMKSVHAVGTRIEIDLRAGVTFTRLLTETLRNKLRNQATMTKDGAKHRGGNKNDSQVVSYGTCQFPTLGFVVDRFERIRNFVPEEFWYIQLVVENKDNGGTTTFQWDRGHLFDRLSVLTFYETCIETAGNVAQVVDLKSKPTTKYRPLPLTTVELQKNCARYLRLNAKQSLDAAEKLYQKGFISYPRTETDTFPHAMDLKSLVEKQAQLDQLAAGGRTAWASYAASLLQPENTSNNNKFKFPRSGSHDDKAHPPIHPIVSLGPEANVSPVERRVYEYVARHFLACCSEDAKGQSMTLVLDWAVERFSASGLVVLERNFLDVYPWARWETTKQLPRLEMNALVDIAKAEMKAGTTAPPKPMTESELILLMDTNGIGTDATIAEHIDKIQVRNYVRSEKVGKETYLQPTTLGVSLVHGFEAIGLEDSFAKPFQRREMEQDLKKICEGHASKTDVVKDIVEKYRKYWHKTNACKNTLLQVYDRVKASM | |
| Overview of Protein Modification Sites with Functional and Structural Information | ||
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* ASA = Accessible Surface Area
| Locations | Modification | Substrate Peptides & Secondary Structure |
ASA (%) | Reference | Orthologous Protein Cluster |
|---|---|---|---|---|---|
| 30 | Phosphorylation | GRSTSRDSGYMYVKN CCCCCCCCCEEEEEC | 30.61 | 28889911 |
| Modified Location | Modified Residue | Modification | Type of Upstream Proteins | Gene Name of Upstream Proteins | UniProt AC of Upstream Proteins | Sources |
|---|---|---|---|---|---|---|
Oops, there are no upstream regulatory protein records of TOP3_YEAST !! | ||||||
| Modified Location | Modified Residue | Modification | Function | Reference | ||
|---|---|---|---|---|---|---|
Oops, there are no descriptions of PTM sites of TOP3_YEAST !! | ||||||
* Distance = the distance between SAP position and PTM sites.
| Modified Location | Modification | Variant Position (Distance <= 10) |
Residue Change | SAP | Related Disease | Reference |
|---|---|---|---|---|---|---|
Oops, there are no SNP-PTM records of TOP3_YEAST !! | ||||||
| Kegg Drug | ||||||
|---|---|---|---|---|---|---|
| DrugBank | ||||||
| There are no disease associations of PTM sites. | ||||||
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