| Identification |
|---|
| HMDB Protein ID
| CDBP01368 |
| Secondary Accession Numbers
| Not Available |
| Name
| Serine/threonine-protein kinase Chk1 |
| Description
| Not Available |
| Synonyms
|
Not Available
|
| Gene Name
| CHEK1 |
| Protein Type
| Enzyme |
| Biological Properties |
|---|
| General Function
| Involved in protein kinase activity |
| Specific Function
| Required for checkpoint mediated cell cycle arrest in response to DNA damage or the presence of unreplicated DNA. May also negatively regulate cell cycle progression during unperturbed cell cycles. Recognizes the substrate consensus sequence [R-X-X- S/T]. Binds to and phosphorylates CDC25A, CDC25B and CDC25C. Phosphorylation of CDC25A at 'Ser-178' and 'Thr-507' and phosphorylation of CDC25C at 'Ser-216' creates binding sites for 14-3-3 proteins which inhibit CDC25A and CDC25C. Phosphorylation of CDC25A at 'Ser-76', 'Ser-124', 'Ser-178', 'Ser-279' and 'Ser- 293' promotes proteolysis of CDC25A. Inhibition of CDC25 activity leads to increased inhibitory tyrosine phosphorylation of CDK- cyclin complexes and blocks cell cycle progression. Binds to and phosphorylates RAD51 at 'Thr-309', which may enhance the association of RAD51 with chromatin and promote DNA repair by homologous recombination. Binds to and phosphorylates TLK1 at 'Ser-743', which prevents the TLK1-dependent phosphorylation of the chromatin assembly factor ASF1A. This may affect chromatin assembly during S phase or DNA repair. May also phosphorylate multiple sites within the C-terminus of TP53, which promotes activation of TP53 by acetylation and enhances suppression of cellular proliferation |
| GO Classification
|
| Function |
| transferase activity |
| transferase activity, transferring phosphorus-containing groups |
| kinase activity |
| nucleoside binding |
| purine nucleoside binding |
| adenyl nucleotide binding |
| adenyl ribonucleotide binding |
| atp binding |
| protein kinase activity |
| protein serine/threonine kinase activity |
| binding |
| catalytic activity |
| Process |
| phosphorus metabolic process |
| phosphate metabolic process |
| metabolic process |
| cellular metabolic process |
| protein amino acid phosphorylation |
| phosphorylation |
|
| Cellular Location
|
- Nucleus
- Cytoplasm
- Cytoplasm
- cytoskeleton
- centrosome
|
| Pathways
|
Not Available
|
| Gene Properties |
|---|
| Chromosome Location
| Chromosome:1 |
| Locus
| 11q24.2 |
| SNPs
| CHEK1 |
| Gene Sequence
|
>1431 bp
ATGGCAGTGCCCTTTGTGGAAGACTGGGACTTGGTGCAAACCCTGGGAGAAGGTGCCTAT
GGAGAAGTTCAACTTGCTGTGAATAGAGTAACTGAAGAAGCAGTCGCAGTGAAGATTGTA
GATATGAAGCGTGCCGTAGACTGTCCAGAAAATATTAAGAAAGAGATCTGTATCAATAAA
ATGCTAAATCATGAAAATGTAGTAAAATTCTATGGTCACAGGAGAGAAGGCAATATCCAA
TATTTATTTCTGGAGTACTGTAGTGGAGGAGAGCTTTTTGACAGAATAGAGCCAGACATA
GGCATGCCTGAACCAGATGCTCAGAGATTCTTCCATCAACTCATGGCAGGGGTGGTTTAT
CTGCATGGTATTGGAATAACTCACAGGGATATTAAACCAGAAAATCTTCTGTTGGATGAA
AGGGATAACCTCAAAATCTCAGACTTTGGCTTGGCAACAGTATTTCGGTATAATAATCGT
GAGCGTTTGTTGAACAAGATGTGTGGTACTTTACCATATGTTGCTCCAGAACTTCTGAAG
AGAAGAGAATTTCATGCAGAACCAGTTGATGTTTGGTCCTGTGGAATAGTACTTACTGCA
ATGCTCGCTGGAGAATTGCCATGGGACCAACCCAGTGACAGCTGTCAGGAGTATTCTGAC
TGGAAAGAAAAAAAAACATACCTCAACCCTTGGAAAAAAATCGATTCTGCTCCTCTAGCT
CTGCTGCATAAAATCTTAGTTGAGAATCCATCAGCAAGAATTACCATTCCAGACATCAAA
AAAGATAGATGGTACAACAAACCCCTCAAGAAAGGGGCAAAAAGGCCCCGAGTCACTTCA
GGTGGTGTGTCAGAGTCTCCCAGTGGATTTTCTAAGCACATTCAATCCAATTTGGACTTC
TCTCCAGTAAACAGTGCTTCTAGTGAAGAAAATGTGAAGTACTCCAGTTCTCAGCCAGAA
CCCCGCACAGGTCTTTCCTTATGGGATACCAGCCCCTCATACATTGATAAATTGGTACAA
GGGATCAGCTTTTCCCAGCCCACATGTCCTGATCATATGCTTTTGAATAGTCAGTTACTT
GGCACCCCAGGATCCTCACAGAACCCCTGGCAGCGGTTGGTCAAAAGAATGACACGATTC
TTTACCAAATTGGATGCAGACAAATCTTATCAATGCCTGAAAGAGACTTGTGAGAAGTTG
GGCTATCAATGGAAGAAAAGTTGTATGAATCAGGTTACTATATCAACAACTGATAGGAGA
AACAATAAACTCATTTTCAAAGTGAATTTGTTAGAAATGGATGATAAAATATTGGTTGAC
TTCCGGCTTTCTAAGGGTGATGGATTGGAGTTCAAGAGACACTTCCTGAAGATTAAAGGG
AAGCTGATTGATATTGTGAGCAGCCAGAAGGTTTGGCTTCCTGCCACATGA
|
| Protein Properties |
|---|
| Number of Residues
| 476 |
| Molecular Weight
| 54419.1 |
| Theoretical pI
| 8.38 |
| Pfam Domain Function
|
|
| Signals
|
|
|
Transmembrane Regions
|
|
| Protein Sequence
|
>Serine/threonine-protein kinase Chk1
MAVPFVEDWDLVQTLGEGAYGEVQLAVNRVTEEAVAVKIVDMKRAVDCPENIKKEICINK
MLNHENVVKFYGHRREGNIQYLFLEYCSGGELFDRIEPDIGMPEPDAQRFFHQLMAGVVY
LHGIGITHRDIKPENLLLDERDNLKISDFGLATVFRYNNRERLLNKMCGTLPYVAPELLK
RREFHAEPVDVWSCGIVLTAMLAGELPWDQPSDSCQEYSDWKEKKTYLNPWKKIDSAPLA
LLHKILVENPSARITIPDIKKDRWYNKPLKKGAKRPRVTSGGVSESPSGFSKHIQSNLDF
SPVNSASSEENVKYSSSQPEPRTGLSLWDTSPSYIDKLVQGISFSQPTCPDHMLLNSQLL
GTPGSSQNPWQRLVKRMTRFFTKLDADKSYQCLKETCEKLGYQWKKSCMNQVTISTTDRR
NNKLIFKVNLLEMDDKILVDFRLSKGDGLEFKRHFLKIKGKLIDIVSSQKVWLPAT
|
| External Links |
|---|
| GenBank ID Protein
| Not Available |
| UniProtKB/Swiss-Prot ID
| O14757 |
| UniProtKB/Swiss-Prot Entry Name
| CHK1_HUMAN |
| PDB IDs
|
|
| GenBank Gene ID
| AF016582 |
| GeneCard ID
| CHEK1 |
| GenAtlas ID
| CHEK1 |
| HGNC ID
| HGNC:1925 |
| References |
|---|
| General References
| Not Available |