Nicolin 1, tubulin polyglutamylase complex subunit (NICN1)

Nicolin 1, tubulin polyglutamylase complex subunit (NICN1) is a non-catalytic subunit of the tubulin polyglutamylase complex that facilitates the localization and function of enzymes responsible for polyglutamylation of tubulin. Polyglutamylation is crucial for the modulation of microtubule behavior, impacting neuronal differentiation, axonemal activity, and the stability of centrioles. While NICN1 encodes a protein that is not itself an enzyme, it acts as an essential component of the enzymatic machinery, ensuring appropriate modification of tubulin in neurons and cilia. Mutations in the murine orthologue GTRGEO22 are known to result in diverse developmental defects and infertility in mice, highlighting its biological relevance[9]. NICN1 is expressed broadly in tissues and found primarily in the nucleus, with highest functional impact in neuronal and reproductive tissues[7][8]. Current therapeutic or biomarker applications directly targeting NICN1 are limited, but the polyglutamylation pathway is considered a viable target for drugs modifying microtubule dynamics[1][9].

Other names

Nicolin-1NICN1PGs5MGC12936NPCEDRGTubulin polyglutamylase complex subunit 5nicolin-1nicolin 1, tubulin polyglutamylase complex subunit 5

Drugs or molecules that modulate microtubule polyglutamylation may affect microtubule stability and related cellular processes\nDirect mechanism for known drugs remains undocumented