- Tytuł:
- Structure of small G proteins and their regulators.
- Autorzy:
-
Paduch, Marcin
Jeleń, Filip
Otlewski, Jacek - Powiązania:
- https://bibliotekanauki.pl/articles/1043851.pdf
- Data publikacji:
- 2001
- Wydawca:
- Polskie Towarzystwo Biochemiczne
- Tematy:
-
small G protein
GAP
protein-protein interaction
GTPase
GDI
Rho
Ras
protein tertiary structure
GEF - Opis:
- In recent years small G proteins have become an intensively studied group of regulatory GTP hydrolases involved in cell signaling. More than 100 small G proteins have been identified in eucaryotes from protozoan to human. The small G protein superfamily includes Ras, Rho Rab, Rac, Sar1/Arf and Ran homologs, which take part in numerous and diverse cellular processes, such as gene expression, cytoskeleton reorganization, microtubule organization, and vesicular and nuclear transport. These proteins share a common structural core, described as the G domain, and significant sequence similarity. In this paper we review the available data on G domain structure, together with a detailed analysis of the mechanism of action. We also present small G protein regulators: GTPase activating proteins that bind to a catalytic G domain and increase its low intrinsic hydrolase activity, GTPase dissociation inhibitors that stabilize the GDP-bound, inactive state of G proteins, and guanine nucleotide exchange factors that accelerate nucleotide exchange in response to cellular signals. Additionally, in this paper we describe some aspects of small G protein interactions with downstream effectors.
- Źródło:
-
Acta Biochimica Polonica; 2001, 48, 4; 829-850
0001-527X - Pojawia się w:
- Acta Biochimica Polonica
- Dostawca treści:
- Biblioteka Nauki
Artykuł