FEATURES

FAMILY

DESCRIPTION

Also known as DC2I2_HUMAN, DYNC2I2, WDR34. Acts as one of several non-catalytic accessory components of the cytoplasmic dynein 2 complex (dynein-2 complex), a motor protein complex that drives the movement of cargos along microtubules within cilia and flagella in concert with the intraflagellar transport (IFT) system (PubMed:25205765, PubMed:29742051). DYNC2I2 plays a major role in retrograde ciliary protein trafficking and in ciliogenesis (PubMed:30649997, PubMed:29742051, PubMed:30320547). Required also to maintain a functional transition zone (PubMed:30320547)., Acts as a negative regulator of the Toll-like and IL-1R receptor signaling pathways. Inhibits the MAP3K7-induced NF-kappa-B activation pathway. Inhibits MAP3K7 phosphorylation at 'Thr-184' and 'Thr-187' upon Il-1 beta stimulation. The cytoplasmic dynein 2 complex consists of two catalytic heavy chains (HCs) and a number of non-catalytic subunits presented by intermediate chains (ICs), light intermediate chains (LICs) and light chains (LCs). Among them, a heavy chain (DYNC2H1), two intermediate chains (DYNC2I2 and DYNC2I1), a light intermediate chain (DYNC2LI1), and a light chain (DYNLT2B) are unique to the cytoplasmic dynein complex 2, but a subset of the light chains are also shared by dynein-1 and dynein-2 complexes (PubMed:25205765, PubMed:31451806). Interacts with DYNC2I1; their C-terminal domains each bind a copy of the heavy chain, and their extended N-terminal regions are held together by an array of light chain dimers (PubMed:29742051, PubMed:31451806). Interacts with DYNLL2; this interaction is essential for dynein-2-mediated retrograde trafficking of ciliary proteins (PubMed:30649997). Interacts with DYNLRB1; this interaction is essential for dynein-2-mediated retrograde trafficking of ciliary proteins (PubMed:30649997). Interacts (via the WD domains) with MAP3K7 and TAB3. Interacts (via WD domains) with TAB2 (via C-terminus). Interacts (via WD domains) with TRAF6 (via TRAF-type domains) (PubMed:19521662).

EXTERNAL LINKS

DYNC2I2

Cytoplasmic dynein 2 intermediate chain 2

DYNC2I2

Molecular Synopsis