Olink

Olink®
Part of Thermo Fisher Scientific

Reveal

Gene
RNF135

Uniprot
Q8IUD6

Protein
E3 ubiquitin-protein ligase RNF135

See alternative names RIG-I E3 ubiquitin ligase,
RING finger protein 135,
RING finger protein leading to RIG-I activation,
RING-type E3 ubiquitin transferase RNF135

Uniprot Function Description

E2-dependent E3 ubiquitin-protein ligase that functions as a RIGI coreceptor in the sensing of viral RNAs in cell cytoplasm and the activation of the antiviral innate immune response (PubMed:19017631, PubMed:19484123, PubMed:21147464, PubMed:23950712, PubMed:28469175, PubMed:31006531). Together with the UBE2D3, UBE2N and UB2V1 E2 ligases, catalyzes the 'Lys-63'-linked polyubiquitination of RIGI oligomerized on viral RNAs, an essential step in the activation of the RIG-I signaling pathway (PubMed:19017631, PubMed:21147464, PubMed:28469175, PubMed:31006531). Through a ubiquitin-independent parallel mechanism, which consists in bridging RIGI filaments forming on longer viral RNAs, further activates the RIG-I signaling pathway (PubMed:31006531). This second mechanism that synergizes with the ubiquitin-dependent one would thereby allow an RNA length-dependent regulation of the RIG-I signaling pathway (Probable). Associated with the E2 ligase UBE2N, also constitutively synthesizes unanchored 'Lys-63'-linked polyubiquitin chains that may also activate the RIG-I signaling pathway (PubMed:28469175, PubMed:31006531).

Sample type

Recommended sample types are human plasma and serum. For other sample types e.g cerebrospinal fluid, (CSF), tissue or cell lysate, please contact support@olink.com for more information. Please note that protein expression levels are expected to vary in different sample types and certain assays may be affected by interfering substances such as hemolysate.

Precision

Precision (repeatability) is calculated from linearized NPX values over LOD.

Within run precision Coefficient of Variation (CV)
5%
Between run precision Coefficient of Variation (CV)
4%

Analytical measuring range

The technical data reported below refers to the measured value in the in vitro validation assays run using known concentrations of recombinant antigen. Please note that these figures are for reference only and CANNOT be used to convert NPX values to absolute concentrations for proteins measured in plasma or serum samples.

LOD (pg/mL)
5.9
LLOQ (pg/mL)
5.9
ULOQ (pg/mL)
3906
Hooked
Yes
Hook (pg/mL)
15625
Range (logs)
2.8

Dilution factor

For optimal assay readout, Olink assays are run using different dilutions of the original samples e.g. undiluted, 1:10, or higher. The dilution factor for this assay is noted below and should be taken into account when estimating the appropriate addressable biological concentration of the protein based on the in vitro validation data.

Dilution factor
1:1

Sensitivity plot

The calibrator curve shown below visualizes the analytical measuring range data based on in vitro measurement of recombinant antigen. Please note that this is shown for reference only and CANNOT be used to convert NPX values to absolute concentrations for proteins measured in plasma or serum samples. The vertical dotted lines represent LLOQ and ULOQ respectively, and the horizontal line indicates the LOD.

10⁻⁵10⁻⁴10⁻³10⁻²10⁻¹10⁰10¹10²10³10⁴10⁵10⁶1614121086420−2pg/mLNPXReplicate4PLLODLLOQULOQ

Sample distribution plot

The plot below shows the levels of protein measured in a number of commercial plasma samples. The distributions of samples are presented as boxplots, with the first quartile, median and third quartile marked. Whiskers are set to 10ᵗʰ and 90ᵗʰ percentiles. Replicates <10ᵗʰ and >90ᵗʰ percentile are presented as outlier replicates. Healthy control samples are shown in blue and samples obtained from patients with a range of diseases are shown in red. The latter include inflammatory, cardiovascular, autoimmune & neurological diseases, as well as cancer. The data is shown to give a general idea of the sort of data range to expect, but cannot cover all potential levels that may be seen in clinical samples.

1614121086420−2NPXControl SamplesDisease SamplesLOD

Biomarker Validation Data

Additional validation data, as well as a more detailed description of how the Olink panels are quality controlled can be found in our Data Validation documents – go to Document download center

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