Protein
E3 SUMO-protein ligase PIAS4-A
Function
Functions as an E3-type small ubiquitin-like modifier (SUMO) ligase (By similarity). May play a role as a transcriptional coregulator in various cellular pathways (By similarity). Negatively regulates induction of interferon phi 1 (ifnphi1) mediated by mavs and ticam1/trif. Also inhibits ifnphi1-mediated activation of the interferon-stimulated genes (ISGs) pkz and cd40, and to a lesser extent rsad2 and isg15 (PubMed:22345667). May inhibit ticam1/trif-mediated activation of NF-kappa-B (PubMed:22345667).
Similarity
Belongs to the PIAS family.
Sequence
MAAELVEAMNMVKSFRVSDLQTLLASMGRSKSGLKQDLVGRALRLVQTEYSPELLKNVRQLYETRFPKASAWLAARRPETVAVNYPALNSSPRGTGQGTDYLNGIPKPAPPPAAEVKLVPLPFYHNLETLLPPTELVAQNSEKLQESQCVFDLTPNQVDQIRNSSELRPGMKSVQVVLRICYTDSIGVQEDQYPPNIAVKVNQSYCHVPGYYPSNKPGVEPRRPCRPVNITPWLHLSTVTNRVTITWGNFGKRYSVAVYLVRVFTSGELFNQLKHCSVENPDRCRERIQDKLRFDPESEIATTGLRVSLICPLVKMRLGVPCRVLTCAHLQCFDAVFFLQMNEKKPTWTCPVCDKPAPFELLTIDGLLSEILKETPEDVEEIEYLTDGSWRPIRDDKEKERERENSRTPDYPVVDICVPEANGHSPAHSGTNQTGKSGSGGASAGTGSTSGGSGGGTVVDLTLDDSSEEEGGGGAEDSEETDDSQDSPAPKRGRYDYDKDLVTAY