First Author | Ryazanov AG | Year | 1997 |
Journal | Proc Natl Acad Sci U S A | Volume | 94 |
Issue | 10 | Pages | 4884-9 |
PubMed ID | 9144159 | Mgi Jnum | J:40333 |
Mgi Id | MGI:87674 | Doi | 10.1073/pnas.94.10.4884 |
Citation | Ryazanov AG, et al. (1997) Identification of a new class of protein kinases represented by eukaryotic elongation factor-2 kinase. Proc Natl Acad Sci U S A 94(10):4884-9 |
abstractText | The several hundred members of the eukaryotic protein kinase superfamily characterized to date share a similar catalytic domain structure, consisting of 12 conserved subdomains. Here we report the existence and wide occurrence in eukaryotes of a protein kinase with a completely different structure. We cloned and sequenced the human, mouse, rat, and Caenorhabditis elegans eukaryotic elongation factor-2 kinase (eEF-2 kinase) and found that with the exception of the ATP-binding site, they do not contain any sequence motifs characteristic of the eukaryotic protein kinase superfamily. Comparison of different eEF-2 kinase sequences reveals a highly conserved region of approximately 200 amino acids which was found to be homologous to the catalytic domain of the recently described myosin heavy chain kinase A (MHCK A) from Dictyostelium. This suggests that eEF-2 kinase and MHCK A are members of a new class of protein kinases with a novel catalytic domain structure. |