High-resolution cryo-EM of a small protein complex: The structure of the human CDK-activating kinase.
Abstract
The human CDK-activating kinase (CAK) is a multifunctional protein complex and key regulator of cell growth and division. Because of its critical functions in regulating the cell cycle and transcription initiation, it is a key target for multiple cancer drug discovery programs. However, the structure of the active human CAK, insights into its regulation, and its interactions with cellular substrates and inhibitors remained elusive until recently due to the lack of high-resolution structures of the intact complex. This review covers the progress in structure determination of the human CAK by cryogenic electron microscopy (cryo-EM), from early efforts to recent near-atomic resolution maps routinely resolved at 2Å or better. These results were enabled by the latest cryo-EM technologies introduced after the initial phase of the "resolution revolution" and allowed the application of high-resolution methods to new classes of molecular targets, including small protein complexes that were intractable using earlier technology.
Collections
Subject
Science & Technology
Life Sciences & Biomedicine
Biochemistry & Molecular Biology
Biophysics
Cell Biology
CRYSTAL-STRUCTURE
IN-VIVO
ASSEMBLY FACTOR
PHASE PLATE
CYCLIN
TFIIH
CAK
PHOSPHORYLATION
INITIATION
MAT1
Research team
Struct Biol DNA repair
Language
eng
Date accepted
2024-03-07
License start date
2024-03-25
Citation
Structure, 2024, 32 (4), pp. S0969-2126(24)00085-6 -
Publisher
CELL PRESS