Regulation of T cell function by protein S-acylation

Area of Science:

• Immunology
• Biochemistry
• Cell Biology

Background:

• S-acylation is a dynamic post-translational modification involving the attachment of fatty acids to cysteine residues.
• Its reversible nature distinguishes it from other lipid modifications and highlights its role in signaling.
• Recent studies identify S-acylation as a key regulator of T cell function.

Purpose of the Study:

• To review the diverse range of S-acylated proteins in T cells.
• To elucidate the mechanisms through which S-acylation impacts protein function.
• To introduce protein acyltransferases as significant regulators in T cell biology.

Main Methods:

• Literature review of studies on S-acylation in T cells.
• Analysis of identified S-acylated T cell proteins (receptors, enzymes, ion channels, adaptors).
• Examination of the role of zDHHC protein acyltransferases in T cell processes.

Main Results:

• Numerous T cell proteins are targets of S-acylation.
• S-acylation regulates protein localization, stability, and interactions, impacting T cell function.
• zDHHC enzymes are critical for T cell activation and differentiation.

Conclusions:

• S-acylation is a vital regulatory mechanism in T cells.
• Understanding S-acylation and its enzymes offers insights into T cell signaling and disease.
• Protein acyltransferases represent a novel class of T cell regulatory proteins.