Abstract
Regulation of both the cell cycle and gene transcription is essential for orderly progression of cell growth and division. Recent results on the structures of two cyclins, cyclin A and cyclin H, and two transcription factor mediator proteins, TFIIB and the A pocket region of the retinoblastoma tumour suppressor protein (Rb), show that they share domains with a strikingly similar alpha-helical topology, despite remote sequence identity.
MeSH terms
-
Amino Acid Sequence
-
Cell Cycle
-
Cyclin A / chemistry*
-
Cyclin A / metabolism
-
Cyclin H
-
Cyclins / chemistry*
-
Cyclins / metabolism
-
Models, Molecular
-
Molecular Sequence Data
-
Protein Conformation
-
Retinoblastoma Protein / chemistry*
-
Retinoblastoma Protein / metabolism
-
Sequence Homology, Amino Acid
-
Transcription Factor TFIIB
-
Transcription Factors / chemistry*
-
Transcription Factors / metabolism
-
Transcription, Genetic*
Substances
-
Cyclin A
-
Cyclin H
-
Cyclins
-
Retinoblastoma Protein
-
Transcription Factor TFIIB
-
Transcription Factors