Type 3 IP3 receptor: Its structure, functions, and related disease implications

Area of Science:

• Cellular Biology
• Molecular Biology
• Biochemistry

Background:

• Cell-fate decisions rely on precise regulation of signaling molecules and transcription factors, particularly intracellular calcium (Ca2+) homeostasis.
• Type 3 inositol 1,4,5-triphosphate receptor (IP3R3) is a tetrameric channel mediating Ca2+ release from the endoplasmic reticulum (ER) upon extracellular stimulation.
• IP3R3 gating is influenced by ligands and interacting proteins, crucial for its biological functions and disease mechanisms.

Purpose of the Study:

• To review recent advancements in the study of IP3R3.
• To provide a comprehensive overview of the literature on IP3R3 structure, biological functions, and pathogenic mechanisms.

Main Methods:

• Literature review of existing research on IP3R3.
• Analysis of studies focusing on IP3R3 structure, ligand binding, protein interactions, and disease relevance.

Main Results:

• Extensive research has elucidated the basic structure of IP3R3.
• Understanding of IP3R3 regulation by ligands and interacting proteins has deepened.
• Novel insights into IP3R3's biological roles and involvement in diseases have emerged.

Conclusions:

• IP3R3 is a key regulator of intracellular Ca2+ dynamics, impacting cell fate.
• Continued research on IP3R3 structure-function relationships and its pathogenic roles is vital.
• This review synthesizes current knowledge, highlighting future research directions for IP3R3.