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Protein Name: E3 ubiquitin-protein ligase RNF31

UniprotKB/SwissProt ID: RNF31_HUMAN (Q96EP0)

Gene Name: RNF31

Synonyms: ZIBRA

Organism: Homo sapiens (Human).

Function: E3 ubiquitin-protein ligase component of the LUBAC complex which conjugates linear ('Met-1'-linked) polyubiquitin chains to substrates and plays a key role in NF-kappa-B activation and regulation of inflammation. LUBAC conjugates linear polyubiquitin to IKBKG and RIPK1 and is involved in activation of the canonical NF-kappa-B and the JNK signaling pathways. Linear ubiquitination mediated by the LUBAC complex interferes with TNF- induced cell death and thereby prevents inflammation. LUBAC is proposed to be recruited to the TNF-R1 signaling complex (TNF-RSC) following polyubiquitination of TNF-RSC components by BIRC2 and/or BIRC3 and to conjugate linear polyubiquitin to IKBKG and possibly other components contributing to the stability of the complex. Together with FAM105B/otulin, the LUBAC complex regulates the canonical Wnt signaling during angiogenesis. Binds polyubiquitin of different linkage types.

Other Modifications: View all modification sites in dbPTM

Protein Subcellular Localization: Cytoplasm (By similarity).

PDB :
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Graphical Visualization of Ubiquitination Sites:
Overview of Protein Ubiquitination Sites with Functional and Structural Information
InterPro ID Domain
IPR000449
IPR001841
IPR001876
IPR002867
IPR015940


The ubiquitination sites of RNF31_HUMAN

No. Position Ubiquitinated Peptide Secondary Structure Solvent Accessibility Substrate Motifs PubMed ID
199RYWRGV K FNNPVF CCCCCC C CCCCHH 45.24%21890473
2330DRPRGC K GLGLGT CCCCCC C CCCCCC 61.05%21890473
3454YASSLE K GPPKPG CCCCCC C CCCCCC 80.26%21890473
4458LEKGPP K PGPPRR CCCCCC C CCCCCC 66.78%21890473
5579VRTRRR K VQELQS HHHHHH H HHHHHH 46.59%21906983
6640SWDGPD K QSLVRR CCCCCC H HHHHHH 44.94%21890473
7783AYALFH K KLTEGV HHHHHH H HHHHHH 41.99%21906983
8784YALFHK K LTEGVL HHHHHH H HHHHHH 52.66%21906983
91056QARLLQ K LTEEVP HHHHHH H HHHHCC 58.30%2190698

The interacting network mediated by proteins: RNF31_HUMAN

Metabolic pathway:
Kegg map ID Pathway
map03008Ribosome biogenesis in eukaryotes