E3 ubiquitin-protein ligase SspH1

UniProtKB accession:  D0ZVG2

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UniProtKB description:  Effector proteins function to alter host cell physiology and promote bacterial survival in host tissues (PubMed:10564523, PubMed:16611232, PubMed:18005683, PubMed:24248594). This protein is an E3 ubiquitin-protein ligase that interferes with the host's ubiquitination pathway and targets host proteins for proteasomal degradation (PubMed:10564523, PubMed:16611232, PubMed:18005683, PubMed:24248594). Can ubiquitinate ubiquitin, giving rise to polyubiquitin chains (in vitro) (PubMed:18005683). Polyubiquitinates host PKN1, leading to its proteasomal degradation (PubMed:16611232, PubMed:24248594). Down-modulates production of host pro-inflammatory cytokines by inhibiting NF-kappa-B-dependent gene expression; this depends only partially on its E3 ubiquitin-protein ligase activity (PubMed:12819095).