Detailed entry information

Protein Information (annotations from UniProt)

Database IDHIV0002776
UniProt IDQ9NWM0
Primary gene name(s)SMOX
Synonym gene name(s)C20orf16, SMO
Protein nameSpermine oxidase
Protein functionFlavoenzyme which catalyzes the oxidation of spermine to spermidine. Can also use N(1-acetylspermine and spermidine as substrates, with different affinity depending on the isoform, isozyme and on the experimental conditions. Plays an important role in the regulation of polyamine intracellular concentration and has the potential to act as a determinant of cellular sensitivity to the antitumor polyamine analogs. May contribute to beta-alanine production via aldehyde dehydrogenase conversion of 3-amino-propanal.
Subcellular locationIsoform 1: Cytoplasm. Nucleus.;
SUBCELLULAR LOCATION: Isoform 4: Cytoplasm. Nucleus.;
SUBCELLULAR LOCATION: Isoform 6: Cytoplasm. Nucleus.
ECO codeClick here for more information.
Amino acid sequence
FASTA format: Q9NWM0
Gene Ontology
(Biological Process)
Complete annatation
polyamine biosynthetic process [GO:0006596];
polyamine catabolic process [GO:0006598];
spermine catabolic process [GO:0046208]
Gene Ontology
(Molecular Function)
Complete annatation
N1-acetylspermine:oxygen oxidoreductase, N1-acetylspermidine-forming activity [GO:0052895];
norspermine:oxygen oxidoreductase activity [GO:0052894];
polyamine oxidase activity [GO:0046592];
spermine:oxygen oxidoreductase, spermidine-forming activity [GO:0052901]
Gene Ontology
(Cellular Component)
Complete annatation
cytoplasm [GO:0005737];
cytosol [GO:0005829];
nucleus [GO:0005634]
Protein-protein interaction119994
Phylogenetic treeQ9NWM0
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. CD32.909445620448622.31253949323218e-093.08447745504384e-08
AZA vs. DISU0.4611285829522820.144587671152620.718797155225174
AZA vs. IL7-0.2263904902348380.2979874450823110.999311006273513
AZA vs. SAHA0.865337582720180.0009235010809030.0197512765176782
DISU vs. CD3-2.464497611793264.53345579753961e-063.6725263431595e-05
DISU vs. IL7-0.6971776021453340.01531643080505670.151548530095182
DISU vs. SAHA0.4091202380336870.1984442122294180.569884284014779
DMSO vs. AZA0.1686596230641990.3834977801862971
DMSO vs. CD3-2.756979982274061.0093881286366e-091.30527314660175e-08
DMSO vs. DISU-0.2953318889904870.2840316219126730.798676066834541
DMSO vs. IL7-0.3869311054243020.05664126208466950.465336035503529
DMSO vs. SAHA0.6943441250007970.005518529285263310.0599637742308603
HIV vs. Mock in Activation0.1484899978962980.8723792397993220.999983755607037
HIV vs. Mock in Latency0.3623022158037340.5006790296442880.999834320637052
IL7 vs. CD3-3.135433332241811.62333479991617e-113.88389292684704e-10
SAHA vs. CD3-2.067639522767587.33687783760484e-064.80307337153366e-05
SAHA vs. IL71.093329546267482.82413852604746e-050.000710702239426367
(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 0.481907 0.0237611
(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
unknown unknown unknown unknown

Protein Overview       top

Drug-protein Interaction       (annotations from DrugBank)      top

Drugbank ID Drug Name Drug Status Pharmacological Action Drug Action
DB00127 Spermine approved, nutraceutical yes ligand

Protein Secondary Structure       (annotations from PDB)      top

not found

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

HIV Partner Interaction Type PubMed
Tat activates 23665428

Metabolic/Signalling Pathway       (annotations from KEGG database)      top

Pathway Accession Number Description
hsa00330 Arginine and proline metabolism - Homo sapiens (human)
hsa00410 beta-Alanine metabolism - Homo sapiens (human)