Detailed entry information

Protein Information (annotations from UniProt)

Database IDHIV0007726
UniProt IDO95155
Primary gene name(s)UBE4B
Synonym gene name(s)HDNB1, KIAA0684, UFD2
Protein nameUbiquitin conjugation factor E4 B
Protein functionUbiquitin-protein ligase that probably functions as an E3 ligase in conjunction with specific E1 and E2 ligases. May also function as an E4 ligase mediating the assembly of polyubiquitin chains on substrates ubiquitinated by another E3 ubiquitin ligase. {ECO:0000250|UniProtKB:P54860, ECO:0000250|UniProtKB:Q9ES00}.
Subcellular locationCytoplasm {ECO:0000250|UniProtKB:Q9ES00}. Nucleus {ECO:0000250|UniProtKB:Q9ES00}.
ECO codeClick here for more information.
Amino acid sequence
FASTA format: O95155
Gene Ontology
(Biological Process)
Complete annatation
ER-associated ubiquitin-dependent protein catabolic process [GO:0030433];
granzyme-mediated apoptotic signaling pathway [GO:0008626];
neuron projection development [GO:0031175];
proteasome-mediated ubiquitin-dependent protein catabolic process [GO:0043161];
protein autoubiquitination [GO:0051865];
protein monoubiquitination [GO:0006513];
protein polyubiquitination [GO:0000209];
protein ubiquitination involved in ubiquitin-dependent protein catabolic process [GO:0042787];
response to UV [GO:0009411];
ventricular trabecula myocardium morphogenesis [GO:0003222]
Gene Ontology
(Molecular Function)
Complete annatation
ATP binding [GO:0005524];
enzyme binding [GO:0019899];
ligase activity [GO:0016874];
ubiquitin-ubiquitin ligase activity [GO:0034450]
Gene Ontology
(Cellular Component)
Complete annatation
cytoplasm [GO:0005737];
nucleus [GO:0005634];
ubiquitin ligase complex [GO:0000151]
Protein-protein interaction115566
Phylogenetic treeO95155
HIV replication factor status Zhou et al., Cell. Host. Microbe., 2008
Brass et al., Science, 2008
Smith et al., J. Immunol, 2010
gene status
Lu et al., J. Virol., 2011
      Folds changes 8h: unknown; Folds changes 16h: unknown; Tested: unknown;
Schoggins JW and Rice CM, Curr. Opin. Virol., 2011
      Targeted viruses: unknown
      Viral life cycle: unknown
      Mechanism related to antiviral activity: unknown
Anti-viral restriction factor Liu et al., Retrovirology, 2011
      unknown (Triplicates)

Gene Expression Profile       top

            Up-regulated;            Down-regulated

For brief introduction to each study, please go to the help page.

Gene expression during HIV latency

(1). Mohammadi et al., PLoS Pathog., 2014

Differentially expressed transcripts (Pairwise) during latency and subsequent viral reactivation using several agents - Primary CD4+ T-cell based model

DMSO: Dimethyl suloxyde (negative control) - 0.0033% final
SAHA: Vorinostat (Histone deacetylase inhibitor) - 0.5 μM
CD3: TCR Stimulation by IL-2+ antiCD3/anti-CD28 antibodies
IL7: Interleukin-7 based stimulation
DISU: Disulfiram (alcohol dehydrogenase inhibitor) - 0.5 μM
AZA: 5-azacytidine (AZA; DNA methylation inhibitor) - 1 μM
Experimental Condition Log2 Fold Change P value Adjusted P value
AZA vs. CD3-0.2405935599845450.4716427663823330.591004304532301
AZA vs. DISU0.4685659335334910.06465885686995660.557950517715582
AZA vs. IL7-0.03560766746474620.8536883075038760.999311006273513
AZA vs. SAHA-0.08596241388266380.7250466315944720.923407119489742
DISU vs. CD30.695962017920540.06035280959350910.12569193863119
DISU vs. IL7-0.5134142822877180.04229974502551380.271926932306875
DISU vs. SAHA-0.5525846286855850.05868281333937630.305600787780836
DMSO vs. AZA0.009281137048730910.9560355114204671
DMSO vs. CD30.2382316419661220.4638657968409430.574747405420898
DMSO vs. DISU-0.4613228607356030.05929215242987130.469534788451359
DMSO vs. IL7-0.03759504423298720.8350017154309130.963494783989913
DMSO vs. SAHA-0.1015943239837120.6671740062811110.895677013193434
HIV vs. Mock in Activation0.3400224672055180.5861876687926390.999983755607037
HIV vs. Mock in Latency0.05379478972078750.7454206007273080.999834320637052
IL7 vs. CD30.2120674664390530.5141541781983650.642394390582225
SAHA vs. CD30.1304240495828880.7181357340327060.79511465078781
SAHA vs. IL7-0.05381752052382050.8256718634125420.92495375067484
(2). Iglesias-Ussel et al., J. Virol., 2013

Up and Downregulated transcripts during Latency (Latently infected CD4+ T cells vs Uninfected)- Primary CD4+Tcell based model
Log2 Fold Change P Value
unknown unknown

Gene expression during HIV infection and replication

(1). Imbeault et al., PloS Pathog., 2012

Transcriptomic profiling of HIV-1 infected CD4+ T cells - Primary CD4+ T cells
Experiment type Log2 Fold Change P Value Adjusted P Value
Infected vs. Mock unknown unknown unknown
Infected vs. Bystander unknown unknown unknown
(2). Lefebvre et al., J. Virol., 2011

Transcriptome analysis of T-cell line (Sup T1)
Log2 Fold Change unknown
(3). Li et al., J. Immunol., 2013

Lymphatic tissue
Acute Fold Change Acute P Value Asymt Fold Change Asypt P Value AIDS Fold Change AIDS P Value
unknown unknown unknown unknown unknown unknown
(4). Chang et al., MBio., 2011

Transcriptome analysis of T-cell line (Sup T1)

Derived from Sherrill-Mix et al., BMC Retrovirol., 2015 cross validation
Up-regulated (True) unknown
(5). Sherrill-Mix et al., BMC Retrovirol., 2015

Deep RNA-seq analysis of primary human T cell infected with low passage HIV isolate HIV89.6 - Primary CD4+ T cell based
Test Status Log2 Fold Change P Value
OK 0.0548737 0.788264
(6). Rotger et al., PLoS Pathog., 2010

Genome-wide mRNA expression of CD4+ T cells from HIV-infected patient
(Genes differentially expressed (at adjusted p<0.01) according to the empirical Bayes approach)
Log2 Fold Change P Value
unknown unknown

Proteomic/Transcriptomics studies indicating differentially expressed genes mediated by HIV

(1). Greenwood et al., Elife, 2016

Activated (CD3/CD28) Primary human CD4+ T cells infected with pNL4-3-dE-EGFP. The table shows the complete (unfiltered) TMT (tandem mass tag)-based proteomic time course dataset
6 h 24 h 48 h 72 h RTi
1.064 1.256 1.586 1.672 1.357
(2). Navare et al., Virology, 2012

SUP-T1 cell line
FC-4hpi P-value FC-8hpi P-value FC-20hpi P-value Category
unknown unknown unknown unknown unknown unknown unknown
(3). Hyrcza et al., J. Virolo., 2007

Primary human CD4+ and CD8+ T Cells
Affymetrix Prob ID Fold Change In CD8? Category
unknown unknown unknown unknown

Protein Overview       top

Drug-protein Interaction       (annotations from DrugBank)      top

not found

Protein Secondary Structure       (annotations from PDB)      top

PDB Accession Method Resolution Chain Structure Preview
2KRE NMR - A=1208-1302.
3L1X X-ray 2.6Å A=1208-1302.
3L1Z X-ray 3.1Å B=1208-1302.

HIV-1 Interaction       (annotations from NCBI HIV-1 Interaction Database)      top

not found

Metabolic/Signalling Pathway       (annotations from KEGG database)      top

Pathway Accession Number Description
hsa04120 Ubiquitin mediated proteolysis - Homo sapiens (human)
hsa04141 Protein processing in endoplasmic reticulum - Homo sapiens (human)