CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
3 | Alpha Beta |
|
3.10 | Roll |
|
3.10.20 | Ubiquitin-like (UB roll) |
|
3.10.20.90 | Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1 |
Domain Context
CATH Clusters
| Superfamily | Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1 |
| Functional Family | MAP kinase kinase kinase Ste11 |
Enzyme Information
| 2.7.11.25 |
Mitogen-activated protein kinase kinase kinase.
based on mapping to UniProt P28829
ATP + a protein = ADP + a phosphoprotein.
-!- This enzyme phosphorylates and activates its downstream protein kinase, EC 2.7.12.2, but requires MAPKKKK for activation. -!- Some members of this family can be activated by p21-activated kinases (PAK/STE20) or Ras. -!- While c-Raf and c-Mos activate the classical MAPK/ERK pathway, MEKK1 and MEKK2 preferentially activate the c-Jun N-terminal protein kinase(JNK)/stress-activated protein kinase (SAPK) pathway. -!- Mitogen-activated protein kinase (MAPK) signal transduction pathways are among the most widespread mechanisms of cellular regulation. -!- Mammalian MAPK pathways can be recruited by a wide variety of stimuli including hormones (e.g. insulin and growth hormone), mitogens (e.g. epidermal growth factor and platelet-derived growth factor), vasoactive peptides (e.g. angiotensin-II and endothelin), inflammatory cytokines of the tumor necrosis factor (TNF) family and environmental stresses such as osmotic shock, ionizing radiation and ischemeic injury. -!- Formerly EC 2.7.1.37.
|
UniProtKB Entries (2)
| P28829 |
BYR2_SCHPO
Schizosaccharomyces pombe 972h-
Protein kinase byr2
|
| P01112 |
RASH_HUMAN
Homo sapiens
GTPase HRas
|
PDB Structure
| PDB | 1K8R |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | Escherichia |
| Primary Citation |
The Ras-Byr2RBD complex: structural basis for Ras effector recognition in yeast.
Structure
|