Human protein: polyubiquitin-C
Human protein sequence: MQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDYNIQKESTLHLVLRLRGGMQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDYNIQKESTLHLVLRLRGGMQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDYNIQKESTLHLVLRLRGGMQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDYNIQKESTLHLVLRLRGGMQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDYNIQKESTLHLVLRLRGGMQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDYNIQKESTLHLVLRLRGGMQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDYNIQKESTLHLVLRLRGGMQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDYNIQKESTLHLVLRLRGGMQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDYNIQKESTLHLVLRLRGGV

HIV protein: matrix
Interaction type: ubiquitinated by
Description: Monoubiquitinated forms of the HIV-1 matrix (MA), capsid (CA), and nucleocapsid (NC) proteins are detected in mature virus particles
HIV protein sequence: MGARASVLSGGELDRWEKIRLRPGGKKKYKLKHIVWASRELERFAVNPGLLETSEGCRQILGQLQPSLQTGSEELRSLYNTVATLYCVHQRIEIKDTKEALDKIEEEQNKSKKKAQQAAADTGHSNQVSQNY

HIV protein: capsid
Interaction type: ubiquitinated by
Description: Monoubiquitinated forms of the HIV-1 matrix (MA), capsid (CA), and nucleocapsid (NC) proteins are detected in mature virus particles
HIV protein sequence: PIVQNIQGQMVHQAISPRTLNAWVKVVEEKAFSPEVIPMFSALSEGATPQDLNTMLNTVGGHQAAMQMLKETINEEAAEWDRVHPVHAGPIAPGQMREPRGSDIAGTTSTLQEQIGWMTNNPPIPVGEIYKRWIILGLNKIVRMYSPTSILDIRQGPKEPFRDYVDRFYKTLRAEQASQEVKNWMTETLLVQNANPDCKTILKALGPAATLEEMMTACQGVGGPGHKARVL

HIV protein: nucleocapsid
Interaction type: ubiquitinated by
Description: Monoubiquitinated forms of the HIV-1 matrix (MA), capsid (CA), and nucleocapsid (NC) proteins are detected in mature virus particles
HIV protein sequence: MQRGNFRNQRKIVKCFNCGKEGHTARNCRAPRKKGCWKCGKEGHQMKDCTERQAN

HIV protein: p6
Interaction type: ubiquitinated by
Description: Ubiquitination of HIV-1 p6-Gag may be important for proper virus release from cells
HIV protein sequence: LQSRPEPTAPPEESFRSGVETTTPPQKQEPIDKELYPLTSLRSLFGNDPSSQ

HIV protein: p6
Interaction type: ubiquitinated by
Description: HIV-1 Gag PTAP mutant impairs the entry of Gag into the ESCRT pathway and leads to increased ubiquitination of Gag
HIV protein sequence: LQSRPEPTAPPEESFRSGVETTTPPQKQEPIDKELYPLTSLRSLFGNDPSSQ

HIV protein: p6
Interaction type: ubiquitinated by
Description: The L domain (P(T/S)APP; amino acids 7-11) of HIV-1 p6-Gag interacts with a ubiquitin ligase complex resulting in the monoubiquitination of p6
HIV protein sequence: LQSRPEPTAPPEESFRSGVETTTPPQKQEPIDKELYPLTSLRSLFGNDPSSQ

HIV protein: p1
Interaction type: ubiquitinated by
Description: HIV-1 p1 is mono- or di-ubiquitinated at levels comparable to those of the other HIV-2 Gag domains MA, CA, NC, and p6; cumulative replacement of all lysine residues in NC and p1 or in NC and p6 results in an accumulation of late budding structures
HIV protein sequence: FLGKIWPSYKGRPGNF

HIV protein: Vif
Interaction type: inhibited by
Description: HIV-1 Vif-induced G2 accumulation requires a Cul5-based E3 ligase, but is independent of APOBEC3D/E, F, and G expression. Overexpression of ubiquitin(K48R) abolishes Vif-induced G2 accumulation
HIV protein sequence: MENRWQVMIVWQVDRMRIRTWKSLVKHHMYVSGKARGWFYRHHYESPHPRISSEVHIPLGDARLVITTYWGLHTGERDWHLGQGVSIEWRKKRYSTQVDPELADQLIHLYYFDCFSDSAIRKALLGHIVSPRCEYQAGHNKVGSLQYLALAALITPKKIKPPLPSVTKLTEDRWNKPQKTKGHRGSHTMNGH

HIV protein: Vpr
Interaction type: cooperates with
Description: The C-terminal domain or the R90 residue of HIV-1 Vpr are important for Vpr-mediated IL-12 degradation via ubiquitin-dependent pathway
HIV protein sequence: MEQAPEDQGPQREPHNEWTLELLEELKNEAVRHFPRIWLHGLGQHIYETYGDTWAGVEAIIRILQQLLFIHFRIGCRHSRIGVTRQRRARNGASRS

HIV protein: Vpr
Interaction type: complexes with
Description: A di-Ub(K48)-hHR23A-Vpr ternary complex is formed with Lys-48-linked di-ubiquitin binding to the UBA1 domain in the Vpr-hHR23A complex
HIV protein sequence: MEQAPEDQGPQREPHNEWTLELLEELKNEAVRHFPRIWLHGLGQHIYETYGDTWAGVEAIIRILQQLLFIHFRIGCRHSRIGVTRQRRARNGASRS

HIV protein: Tat
Interaction type: ubiquitinated by
Description: HIV-1 Tat is ubiquitinated on Lys71 by Hdm2 in conjunction with ubiquitin-activating enzyme E1 and ubiquitin-conjugating enzyme E2D 1 (UbcH5)
HIV protein sequence: MEPVDPRLEPWKHPGSQPKTACTNCYCKKCCFHCQVCFITKALGISYGRKKRRQRRRAHQNSQTHQASLSKQPTSQPRGDPTGPKE

HIV protein: Rev
Interaction type: ubiquitinated by
Description: HIV-1 Rev is modified by polyubiquitination at Lys-33 and Lys-115; Lys-33 is the most efficient residue for branching of ubiquitin chains
HIV protein sequence: MAGRSGDSDEELIRTVRLIKLLYQSNPPPNPEGTRQARRNRRRRWRERQRQIHSISERILGTYLGRSAEPVPLQLPPLERLTLDCNEDCGTSGTQGVGSPQILVESPTVLESGTKE