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Offers users an effective platform to efficiently study protein ubiquitylation networks among large-scale ubiquitylation data. The current version of UbiNet was designed specifically for humans to serve as not only a meaningful framework for E3-substrate regulatory networks but also a new scheme to discover potential E3 ligases for ubiquitylated substrates. To date, UbiNet has accumulated 43 948 experimentally verified ubiquitylation sites from 14 692 ubiquitylated proteins of humans.


A public resource for the retrieval of experimentally verified human ubiquitination enzymes and substrates. hUbiquitome is the first comprehensive database of human ubiquitination cascades. Currently, hUbiquitome has in its repertoire curated data comprising 1 E1 enzyme, 12 E2 enzymes, 138 E3 ligases or complexes, 279 different substrate proteins and 17 deubiquitination enzyme terms. The biological functions of substrates from different kinds of E3s were analyzed using the collected data.

mUbiSiDa / mammalian Ubiquitination Site Database

Provides a scientific community with a comprehensive, freely and high-quality accessible resource of mammalian protein ubiquitination sites. The mUbiSiDa was designed to be a widely used tool for biologists and biomedical researchers with a user-friendly interface, and facilitate the further research of protein ubiquitination, biological networks and functional proteomics. It can also provide blast function to predict novel protein ubiquitination sites in other species by blast the query sequence in the deposit sequences.