O15226: NF-kappa-B-repressing factor (NKRF)

NF-kappa-B-repressing factor (NKRF) is a 690-residue protein from Homo sapiens. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: O15226.

Gene
NKRF
Organism
Homo sapiens
Length
690 residues
Mean pLDDT
69.6
Model
AF-O15226-F1 v6
Model created
1 Aug 2025
PDB structures
2

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Model confidence (pLDDT)

The mean pLDDT of this model is 69.6 (low overall). pLDDT is AlphaFold's per-residue confidence score from 0 to 100. In MolViewer, choose the B-factor color scheme to color the model by pLDDT, because AlphaFold stores it in the B-factor column.

pLDDT bandMeaningShare of residues
Above 90Very high: backbone and side chains are usually accurate30%
70 to 90Confident: backbone generally right30%
50 to 70Low: treat with caution10%
Below 50Very low: often disordered regions30%

What pLDDT means and how to read it

Function

Enhances the ATPase activity of DHX15 by acting like a brace that tethers mobile sections of DHX15 together, stabilizing a functional conformation with high RNA affinity of DHX15 (PubMed:12381793). Involved in the constitutive silencing of the interferon beta promoter, independently of the virus-induced signals, and in the inhibition of the basal and cytokine-induced iNOS promoter activity (PubMed:12381793). Also involved in the regulation of IL-8 transcription (PubMed:12381793). May also act as a DNA-binding transcription regulator: interacts with a specific negative regulatory element (NRE) 5'-AATTCCTCTGA-3' to mediate transcriptional repression of certain NK-kappa-B responsive genes…

Subunit structure

Interacts with NF-kappa-B (PubMed:10562553). Interacts with XRN2 (PubMed:24462208). Interacts (via G-patch domain) with DHX15; promoting the RNA helicase activity of DHX15 (PubMed:32179686)

Subcellular location

Nucleus, nucleolus

Experimental structures in the PDB

Compare the prediction with experimentally determined structures of the same protein:

PDB IDMethodResolutionChains and residues
6SH6X-ray1.85 ÅB=541-603
6SH7X-ray2.21 ÅB=541-603

More AlphaFold highlights

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