RESEARCH: G-PROTEINS
FOLDING PROJECT #14219 PROFILE

G-proteins are like tiny switches that control many important things in our bodies, like vision and muscle movement. They work by changing shape when they bind to different molecules. This project looks at how G-proteins release a molecule called GDP, which is an important step in turning them on.

G-proteins play central role in various signalling pathways involved in vision, taste, oflaction, muscle contraction and neurotransmission.

G-proteins regulate these signalling pathways by switching between 'active' and 'inactive' states, dictated by the type nucleotide bound to their active site.

When bound to gaunosine dinucleotide (GDP), G-proteins adopt inactive state.

Dissociation of GDP and subsequent binding of gaunosine trinucleotide (GTP) activates G-proteins, which in turn activate downstream signalling pathways.

GDP dissociation is the rate limiting step in activation of G-proteins and misregulation of this process can often lead to disease conditions.

in this project, we are studying the mechanism of GDP dissociation process.

G-proteins

Guanine nucleotide-binding proteins.

G-proteins are a family of proteins that play a crucial role in transmitting signals within cells. They act as molecular switches, cycling between an active state bound to GTP (guanosine triphosphate) and an inactive state bound to GDP (guanosine diphosphate). This switching mechanism regulates various cellular processes, including vision, taste, olfaction, muscle contraction, and neurotransmission.

Signaling Pathways

A series of biochemical reactions that transmit signals within a cell or between cells.

Signaling pathways are intricate networks of molecules that relay information within and between cells. These pathways are essential for coordinating cellular activities, responding to environmental stimuli, and regulating growth and development.

GDP

Guanosine diphosphate.

GDP is a nucleotide that serves as a precursor to GTP and plays a role in various cellular processes, including energy metabolism and signal transduction. In the context of G-protein signaling, GDP binds to G-proteins in their inactive state.

GTP

Guanosine triphosphate.

GTP is a high-energy nucleotide that plays a crucial role in cellular energy metabolism and signal transduction. In the context of G-protein signaling, GTP binds to G-proteins, activating them and initiating downstream signaling cascades.

Disease Conditions

Abnormal states of health characterized by specific symptoms and signs.

Disease conditions are deviations from normal physiological function that can manifest as various symptoms and signs. They can arise from genetic factors, environmental exposures, lifestyle choices, or a combination of these factors.