Detailed entry information

Protein Information (annotations from UniProt)

Database IDHIV0000474
UniProt IDO95931
Primary gene name(s)CBX7
Synonym gene name(s)unknown
Protein nameChromobox protein homolog 7
Protein functionComponent of a Polycomb group, PcG multiprotein PRC1-like complex, a complex class required to maintain the transcriptionally repressive state of many genes, including Hox genes, throughout development. PcG PRC1 complex acts via chromatin remodeling and modification of histones; it mediates monoubiquitination of histone H2A 'Lys-119', rendering chromatin heritably changed in its expressibility. Promotes histone H3 trimethylation at 'Lys-9', H3K9me3. Binds to trimethylated lysine residues in histones, and possibly also other proteins. Regulator of cellular lifespan by maintaining the repression of CDKN2A, but not by inducing telomerase activity. {ECO:0000269|PubMed:19636380, ECO:0000269|PubMed:21047797, ECO:0000269|PubMed:21060834, ECO:0000269|PubMed:21282530}.
Subcellular locationNucleus {ECO:0000269|PubMed:14647293, ECO:0000269|PubMed:21060834, ECO:0000269|PubMed:21282530}.
ECO codeClick here for more information.
Amino acid sequence
FASTA format: O95931
Gene Ontology
(Biological Process)
Complete annatation
covalent chromatin modification [GO:0016569];
negative regulation of transcription from RNA polymerase II promoter [GO:0000122];
response to drug [GO:0042493];
sebaceous gland development [GO:0048733];
transcription, DNA-templated [GO:0006351]
Gene Ontology
(Molecular Function)
Complete annatation
chromatin binding [GO:0003682];
single-stranded RNA binding [GO:0003727]
Gene Ontology
(Cellular Component)
Complete annatation
cytoplasm [GO:0005737];
heterochromatin [GO:0000792];
nuclear chromatin [GO:0000790];
nucleoplasm [GO:0005654];
nucleus [GO:0005634];
PcG protein complex [GO:0031519];
PRC1 complex [GO:0035102]
Protein-protein interaction117044
Phylogenetic treeO95931
HIV replication factor status Zhou et al., Cell. Host. Microbe., 2008
      unknown
Brass et al., Science, 2008
      unknown
Smith et al., J. Immunol, 2010
      Negatively associated
Interferon-stimulated
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. CD3-2.270519969491953.76219055908678e-117.12358493800953e-10
AZA vs. DISU0.01373460714632340.9566682959369260.996649735504266
AZA vs. IL7-0.7462711681524420.0001158596267462060.0169548752810249
AZA vs. SAHA-0.04286607532244160.860537402825220.967429787016006
DISU vs. CD32.27208158208892.25604568360183e-094.1271398828415e-08
DISU vs. IL7-0.7700273829732130.002386972882919450.0479142692543418
DISU vs. SAHA-0.05450498211502790.8515341050251740.960203429486898
DMSO vs. AZA-0.004877284284271480.9767797209235541
DMSO vs. CD32.253584710428081.761557566482e-113.14429677002977e-10
DMSO vs. DISU-0.02058480543333830.9327128748902170.991044421109467
DMSO vs. IL7-0.7340499393095615.03581629384131e-050.00720080429099172
DMSO vs. SAHA-0.04334134613945280.8541249575580040.961936959393066
HIV vs. Mock in Activation0.2169707016415260.7286459386629770.999983755607037
HIV vs. Mock in Latency0.1893298595359780.2513558603333970.999834320637052
IL7 vs. CD31.529491559576423.32411595460602e-062.87460698702103e-05
SAHA vs. CD32.204202708438952.58169818856402e-093.93389198196762e-08
SAHA vs. IL70.7001225934538280.004291007782179610.0345711658517239
(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) TRUE
(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 -1.16423 0.000305467
(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
unknown unknown unknown unknown unknown
(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