Related Experiment Video
Updated: Jul 24, 2025

Sample Preparation for Mass Spectrometry-based Identification of RNA-binding Regions
Published on: September 28, 2017
Resonance assignments of the PUB domain of the RNF31 protein
Lanlan Song1,2, Fumei Zhong1,2, Xiaoming Tu3,4
1Ministry of Education Key Laboratory for Membraneless Organelles & Cellular Dynamics, Hefei, China.
Abstract:
E3 ubiquitin protein ligase RNF31 is present in human proteins and is involved in linear ubiquitin chain assembly complex (LUBAC) activity and cell growth. RNF31 is involved in ubiquitination, which is the post-translational modification of proteins. Ubiquitin molecules connect with amino acid residues of target proteins under the action of ubiquitin-activating enzyme E1, ubiquitin binding enzyme E2 and ubiquitin ligase E3, so as to achieve certain physiological functions. The abnormal expression of ubiquitination promotes the formation of cancer. In studies of breast cancer, RNF31 mRNA levels were found to be higher in cancer cells than in other tissues. The PUB domain of RNF31 is the binding site of the ubiquitin thioesterase otulin. Here, we report the backbone and side-chain resonance assignments of the PUB domain of RNF31 and study the backbone relaxation of the domain. These studies will contribute to further understanding of the structural and functional relationship of RNF31 protein, which may also be a target for drug research.
Related Concept Videos
Transcriptional Regulation: Riboswitches
Bacterial RNA Polymerase
In most genes, the transcription site is a single base present upstream of the coding sequence. Though RNAP is a catalytically efficient enzyme, it does not recognize...
Conserved Binding Sites
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
Other Nuclides: 31P, 19F, 15N NMR
While fluorine-19 and phosphorous-31 have high natural abundances (100%) and positive gyromagnetic ratios, nitrogen-15 has a low natural abundance and a negative gyromagnetic ratio. However, nitrogen-15 is still preferred over nitrogen-14 (which has a...
Transcription Initiation
The promoters and enhancers and their accessory proteins allow tight regulation of...
Eukaryotic RNA Polymerases
All three eukaryotic RNAPs require specific transcription factors, of which the...

