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Cerebellum: Anatomical Regions

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The cerebellum, also known as the "little brain," is located in the posterior cranial fossa, inferior to the tentorium cerebelli and dorsal to the brainstem. It plays a significant role in motor control, coordination, and proprioception.
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Cerebrum: Anatomical Overview I

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Related Experiment Video

Updated: May 24, 2026

Cerebellar Regional Dissection for Molecular Analysis

Cerebellar Regional Dissection for Molecular Analysis

Published on: December 5, 2020

G-substrate: the cerebellum and beyond.

¹Aging Regulation Research Team, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan.

Progress in Molecular Biology and Translational Science

|February 21, 2012

Summary

Nitric oxide (NO) activates a pathway involving soluble guanylate cyclase (sGC) and cyclic GMP-dependent protein kinase (PKG). G-substrate, a PKG substrate, plays key roles in cerebellum memory and neuroprotection in the brain and retina.

Area of Science:

Neuroscience
Molecular Biology
Biochemistry

Background:

The nitric oxide (NO)-soluble guanylate cyclase (sGC)-3':5'-cyclic guanosine monophosphate (cGMP)-cGMP-dependent protein kinase (PKG) pathway is crucial in cellular signaling.
Research has been limited by the restricted localization of pathway components and a lack of identified PKG substrates.
G-substrate, a known PKG substrate, was initially discovered in the cerebellum.

Purpose of the Study:

To review the relationship between G-substrate and the NO-sGC-cGMP-PKG pathway.
To describe the characteristics of the G-substrate gene and protein in relation to diseases.
To elucidate the physiological roles of G-substrate in the cerebellum, ventral tegmental area, and retina.

Main Methods:

Literature review of studies on the NO-sGC-cGMP-PKG pathway and G-substrate.

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Analysis of G-substrate gene and protein characteristics.

Discussion of G-substrate's physiological functions based on existing research.

Main Results:

G-substrate is a key substrate for PKG within the NO-sGC-cGMP-PKG signaling cascade.
G-substrate gene and protein characteristics are linked to various diseases.
G-substrate regulates cerebellum-dependent long-term memory and provides neuroprotection in the ventral tegmental area and retina.

Conclusions:

G-substrate is integral to the NO-sGC-cGMP-PKG pathway, influencing critical physiological functions.
Understanding G-substrate's role offers insights into neurological disorders and potential therapeutic targets.
G-substrate's functions in memory and neuroprotection highlight its significance in brain health.