Recombinant Human IKK gamma/NEMO protein

Specifications

Form

Liquid

Additional notes

Affinity purified.

General info

Function

Regulatory subunit of the IKK core complex which phosphorylates inhibitors of NF-kappa-B thus leading to the dissociation of the inhibitor/NF-kappa-B complex and ultimately the degradation of the inhibitor (PubMed : 14695475, PubMed : 20724660, PubMed : 21518757, PubMed : 9751060). Its binding to scaffolding polyubiquitin plays a key role in IKK activation by multiple signaling receptor pathways (PubMed : 16547522, PubMed : 18287044, PubMed : 19033441, PubMed : 19185524, PubMed : 21606507, PubMed : 27777308, PubMed : 33567255). Can recognize and bind both 'Lys-63'-linked and linear polyubiquitin upon cell stimulation, with a much higher affinity for linear polyubiquitin (PubMed : 16547522, PubMed : 18287044, PubMed : 19033441, PubMed : 19185524, PubMed : 21606507, PubMed : 27777308). Could be implicated in NF-kappa-B-mediated protection from cytokine toxicity. Essential for viral activation of IRF3 (PubMed : 19854139). Involved in TLR3- and IFIH1-mediated antiviral innate response; this function requires 'Lys-27'-linked polyubiquitination (PubMed : 20724660).. (Microbial infection) Also considered to be a mediator for HTLV-1 Tax oncoprotein activation of NF-kappa-B.

Post-translational modifications

Phosphorylation at Ser-68 attenuates aminoterminal homodimerization.. Polyubiquitinated on Lys-285 via 'Lys-63'-linked ubiquitin; the ubiquitination is mediated downstream of NOD2 and RIPK2 and probably plays a role in signaling by facilitating interactions with ubiquitin domain-containing proteins and activates the NF-kappa-B pathway (PubMed:15620648, PubMed:17562858, PubMed:19136968). Polyubiquitinated on Lys-285 and Lys-399 through 'Lys-63'-linked ubiquitin; the ubiquitination is mediated by BCL10, MALT1 and TRAF6 and probably plays a role in signaling by facilitating interactions with ubiquitin domain-containing proteins and activates the NF-kappa-B pathway (PubMed:14695475, PubMed:17562858, PubMed:19136968). Monoubiquitinated on Lys-277 and Lys-309; promotes nuclear export (PubMed:14651848). Polyubiquitinated through 'Lys-27' by TRIM23; involved in antiviral innate and inflammatory responses (PubMed:20724660). Linear polyubiquitinated on Lys-111, Lys-143, Lys-226, Lys-246, Lys-264, Lys-277, Lys-285, Lys-292, Lys-302, Lys-309 and Lys-326; the head-to-tail polyubiquitination is mediated by the LUBAC complex and plays a key role in NF-kappa-B activation (PubMed:21455181). Deubiquitinated by USP10 in a TANK-dependent and -independent manner, leading to the negative regulation of NF-kappa-B signaling upon DNA damage (PubMed:25861989). Ubiquitinated at Lys-326 by MARCHF2 following bacterial and viral infection which leads to its degradation (PubMed:32935379). Polyubiquitinated via 'Lys-29'-linked ubiquitin; leading to lysosomal degradation (PubMed:21518757).. Sumoylated on Lys-277 and Lys-309 with SUMO1; the modification results in phosphorylation of Ser-85 by ATM leading to a replacement of the sumoylation by mono-ubiquitination on these residues.. Neddylated by TRIM40, resulting in stabilization of NFKBIA and down-regulation of NF-kappa-B activity.. (Microbial infection) Cleaved by hepatitis A virus (HAV) protease 3C allowing the virus to disrupt the host innate immune signaling.. (Microbial infection) Deubiquitinated by Epstein-Barr virus BPLF1 on both 'Lys-48' and 'Lys-63'-linked ubiquitin chains; leading to NF-kappa-B signaling inhibition.. (Microbial infection) Polyubiquitinated on Lys-309 and Lys-321 via 'Lys-27'-linked ubiquitin by Shigella flexneri E3 ubiquitin-protein ligase ipah9.8, leading to its degradation by the proteasome.. (Microbial infection) Polyubiquitination through 'Lys-63' is interrupted by interaction with SARS coronavirus-2/SARS-CoV-2 virus protein ORF9B which inhibits the NF-kappa-B pathway.

Subcellular localisation

Nucleus