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

ABSTRACT

Cell-fate decisions depend on the precise and strict regulation of multiple signaling molecules and transcription factors, especially intracellular Ca²⁺ homeostasis and dynamics. Type 3 inositol 1,4,5-triphosphate receptor (IP3R3) is an a tetrameric channel that can mediate the release of Ca²⁺ from the endoplasmic reticulum (ER) in response to extracellular stimuli. The gating of IP3R3 is regulated not only by ligands but also by other interacting proteins. To date, extensive research conducted on the basic structure of IP3R3, as well as its regulation by ligands and interacting proteins, has provided novel perspectives on its biological functions and pathogenic mechanisms. This review aims to discuss recent advancements in the study of IP3R3 and provides a comprehensive overview of the relevant literature pertaining to its structure, biological functions, and pathogenic mechanisms.

KEYWORDS:

• IP3R3
• IP₃ receptor
• Ca²⁺ signaling
• apoptosis
• cancer

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

Data sharing is not applicable to this article as no new data were created or analyzed in this study.

Additional information

Funding

This work was supported by grants from the Natural Science Foundation of Hainan Province of China (822MS179), the Natural Science Foundation of Fujian Province of China (2021J011266), and the National Natural Science Foundation of China (82260161).