<div class="infobox">
| Attribute | Value |
|---|---|
| Gene Symbol | RNF11 |
| Protein | RNF11 Protein |
| Chromosomal Location | 1p13.3 |
| NCBI Gene ID | 26994 |
| UniProt ID | Q9Y3F4 |
| Aliases | RNF11, MODATOR |
</div>
RNF11 (RING Finger Protein 11) is a small RING-type E3 ubiquitin ligase that functions as a critical regulator of [NF-kB](/entities/nf-kb) signaling and other cellular pathways[@rnf2007]. It is expressed in various tissues, including the brain, and plays important roles in immune response and cell survival. As a modular signaling protein, RNF11 contains multiple functional domains that enable it to interact with various signaling complexes and regulate diverse cellular processes[@tai2000].
The human RNF11 gene encodes a 154-amino acid protein with a C3HC4 RING finger domain at its C-terminus, flanked by proline-rich regions and potential phosphorylation sites. This structure allows RNF11 to serve as a molecular scaffold, bringing together different signaling components and modulating their activity through ubiquitination[@azzi2012].
RNF11 is a modular signaling protein with multiple functional domains that enable it to participate in various cellular processes:
RNF11 contains a functional RING finger domain that catalyzes ubiquitin transfer to target proteins[@li2016]. This enzymatic activity is essential for:
<div class="infobox">
| Attribute | Value |
|---|---|
| Gene Symbol | RNF11 |
| Protein | RNF11 Protein |
| Chromosomal Location | 1p13.3 |
| NCBI Gene ID | 26994 |
| UniProt ID | Q9Y3F4 |
| Aliases | RNF11, MODATOR |
</div>
RNF11 (RING Finger Protein 11) is a small RING-type E3 ubiquitin ligase that functions as a critical regulator of [NF-kB](/entities/nf-kb) signaling and other cellular pathways[@rnf2007]. It is expressed in various tissues, including the brain, and plays important roles in immune response and cell survival. As a modular signaling protein, RNF11 contains multiple functional domains that enable it to interact with various signaling complexes and regulate diverse cellular processes[@tai2000].
The human RNF11 gene encodes a 154-amino acid protein with a C3HC4 RING finger domain at its C-terminus, flanked by proline-rich regions and potential phosphorylation sites. This structure allows RNF11 to serve as a molecular scaffold, bringing together different signaling components and modulating their activity through ubiquitination[@azzi2012].
RNF11 is a modular signaling protein with multiple functional domains that enable it to participate in various cellular processes:
RNF11 contains a functional RING finger domain that catalyzes ubiquitin transfer to target proteins[@li2016]. This enzymatic activity is essential for:
RNF11 functions as both a positive and negative regulator of NF-kB signaling depending on context[@nfkb2020]. This dual regulatory function is mediated through:
Beyond NF-kB, RNF11 modulates [ERK](/entities/erk) and [JNK](/entities/jnk) MAPK pathways[@tai2000]. These pathways are critical for:
RNF11 is a key modulator of neuroinflammatory processes that underlie many neurodegenerative diseases[@chen2019]. The protein's role in neuroinflammation encompasses multiple aspects:
Microglia are the resident immune cells of the central nervous system and play a central role in neurodegeneration[@mhatre2014]. RNF11 regulates NF-kB-dependent inflammatory cytokine production in microglia, including:
RNF11 modulates TNF receptor signaling cascades through direct interactions with TNFR-associated signaling complexes[@song2017]. This modulation affects:
In Alzheimer's disease, RNF11 contributes to pathogenesis through multiple mechanisms[@gao2018]:
RNF11 influences [amyloid precursor protein](/entities/app-protein) (APP) trafficking and processing through its effects on cellular trafficking pathways. The ubiquitin-proteasome system plays a crucial role in regulating APP metabolism, and RNF11's E3 ligase activity can affect:
Through its interactions with the ubiquitin system, RNF11 may influence tau protein clearance and aggregation[@shi2019]. The UPS is critical for removing abnormal tau species, and RNF11 dysregulation could contribute to:
RNF11 modulates [TNF-alpha-mediated neuronal apoptosis](/entities/apoptosis), a key mechanism of neuronal loss in AD. The protein's regulation of:
In Parkinson's disease, RNF11's role in neuroinflammation and protein clearance is particularly relevant[@xu2018]:
NF-kB dysregulation affects viability of dopaminergic neurons in the [substantia nigra](/brain-regions/substantia-nigra). RNF11's modulation of NF-kB signaling influences:
RNF11 may influence inflammatory pathways triggered by [alpha-synuclein](/proteins/alpha-synuclein) aggregation[@liu2020]. The protein's role in:
RNF11 controls inflammatory responses in [astrocytes](/entities/astrocytes) and microglia, the two major glial cell types involved in neuroinflammation. Activated glia produce:
RNF11 may play a role in Multiple System Atrophy (MSA), a neurodegenerative disorder characterized by:
RNF11-mediated neurodegeneration involves multiple interconnected molecular pathways:
Enhanced NF-kB signaling leads to increased pro-inflammatory cytokine production[@hai2021]. The mechanisms include:
This hyperactivation creates a feed-forward loop where inflammation promotes more inflammation through NF-kB-dependent gene expression.
The UPS is critical for cellular protein homeostasis, and RNF11 plays a role in regulating this system[@johnson2021]:
NF-kB-mediated effects on mitochondrial quality control include:
Inflammatory activation increases [reactive oxygen species](/entities/reactive-oxygen-species) (ROS) production. RNF11 contributes to oxidative stress through:
RNF11 interacts with multiple proteins to execute its cellular functions:
| Protein | Interaction Type | Functional Outcome |
|---------|-----------------|-------------------|
| TRAF2 | Direct binding | NF-kB activation modulation |
| TRAF6 | Direct binding | NF-kB and MAPK signaling |
| TAK1 | Kinase complex | Signal transduction |
| IKK complex | Regulatory interaction | NF-kB activation |
| TAB2/TAK1 | Complex formation | Downstream signaling |
| A20 | Negative regulation | Feedback inhibition |
| UBC13 | Ubiquitin-conjugating enzyme | K63-linked ubiquitination |
Targeting RNF11 signaling represents a potential therapeutic approach[@chen2024]:
Reducing downstream inflammatory signaling through:
Targeting RNF11 E3 ligase activity through:
Reducing neuroinflammation through microglial pathway targeting:
RNF11 expression could serve as a biomarker for:
Potential therapeutic strategies include:
RNF11 is a multifunctional RING finger protein that plays critical roles in regulating NF-kB signaling, neuroinflammation, and protein degradation in the brain. Its functions in microglial activation, neuronal survival, and protein clearance make it relevant to the pathogenesis of multiple neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, and Multiple System Atrophy. Understanding RNF11's complex regulatory functions provides insights into disease mechanisms and potential therapeutic targets.