RESEARCH: G-PROTEINS
FOLDING PROJECT #17212 PROFILE

G-proteins control important body functions like sight, smell, and muscle movement. They work by switching between 'on' and 'off' states using special molecules called GDP and GTP. This project looks at how G-proteins turn off, a process that can go wrong and cause diseases.

Note: This TLDR is a simplication and may not be 100% accurate.

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.

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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 active and inactive states depending on the binding of guanine nucleotides (GDP or GTP). This process is essential for various cellular functions, including vision, taste, smell, muscle contraction, and neurotransmission.

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Signalling Pathways

Series of molecular events leading to a cellular response

Signaling pathways are intricate networks of molecules that communicate information within and between cells. They involve a cascade of events, where one molecule activates the next, ultimately leading to a specific cellular response, such as growth, differentiation, or death.

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Vision

The ability to perceive light and color

Vision is the sense that allows us to perceive light and interpret it as images. This complex process involves the eye, which detects light, and the brain, which processes the signals from the eye to create a visual representation of the world.

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Taste

The ability to perceive flavors

Taste is the sense that allows us to detect and distinguish different flavors. Specialized cells on our tongues called taste receptors detect molecules in food and send signals to the brain, which interprets these signals as different tastes.

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Olfaction

The ability to perceive smells

Olfaction is the sense of smell. Specialized olfactory receptors in the nose detect odor molecules and send signals to the brain, which interprets these signals as different scents.

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Muscle Contraction

The shortening of muscle fibers

Muscle contraction is the process by which muscles generate force and produce movement. This involves a complex interplay of proteins within muscle cells that slide past each other, causing the muscle to shorten.

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Neurotransmission

The transmission of signals between nerve cells

Neurotransmission is the process by which nerve cells (neurons) communicate with each other. It involves the release of chemical messengers called neurotransmitters from one neuron and their reception by another neuron.

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GDP

Guanosine diphosphate

GDP is a molecule that plays a crucial role in cellular signaling. It binds to G-proteins, keeping them in an inactive state.

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GTP

Guanosine triphosphate

GTP is a molecule that activates G-proteins, triggering downstream signaling events.