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Aliases for DDX21 Gene

Aliases for DDX21 Gene

  • DExD-Box Helicase 21 2 3 5
  • DEAD/H (Asp-Glu-Ala-Asp/His) Box Polypeptide 21 2 3
  • Nucleolar RNA Helicase Gu 3 4
  • Nucleolar RNA Helicase II 3 4
  • DEAD-Box Helicase 21 2 3
  • DEAD Box Protein 21 3 4
  • RH II/Gu 3 4
  • Gu-Alpha 3 4
  • DEAD (Asp-Glu-Ala-Asp) Box Polypeptide 21 3
  • DEAD (Asp-Glu-Ala-Asp) Box Helicase 21 3
  • RNA Helicase II/Gu Alpha 3
  • Nucleolar RNA Helicase 2 3
  • EC 3.6.4.13 4
  • Gu Protein 3
  • RH-II/GuA 3
  • RH-II/GU 3
  • EC 3.6.1 61
  • GURDB 3
  • GUA 3

External Ids for DDX21 Gene

Previous GeneCards Identifiers for DDX21 Gene

  • GC10P069527
  • GC10P069802
  • GC10P070608
  • GC10P070060
  • GC10P070385
  • GC10P070715
  • GC10P064717

Summaries for DDX21 Gene

Entrez Gene Summary for DDX21 Gene

  • DEAD box proteins, characterized by the conserved motif Asp-Glu-Ala-Asp (DEAD), are putative RNA helicases. They are implicated in a number of cellular processes involving alteration of RNA secondary structure such as translation initiation, nuclear and mitochondrial splicing, and ribosome and spliceosome assembly. Based on their distribution patterns, some members of this family are believed to be involved in embryogenesis, spermatogenesis, and cellular growth and division. This gene encodes a DEAD box protein, which is an antigen recognized by autoimmune antibodies from a patient with watermelon stomach disease. This protein unwinds double-stranded RNA, folds single-stranded RNA, and may play important roles in ribosomal RNA biogenesis, RNA editing, RNA transport, and general transcription. [provided by RefSeq, Jul 2008]

GeneCards Summary for DDX21 Gene

DDX21 (DExD-Box Helicase 21) is a Protein Coding gene. Diseases associated with DDX21 include Stomach Disease and Cerebral Creatine Deficiency Syndrome 3. Among its related pathways are Gene Expression and Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3. GO annotations related to this gene include nucleic acid binding and RNA binding. An important paralog of this gene is DDX50.

UniProtKB/Swiss-Prot for DDX21 Gene

  • RNA helicase that acts as a sensor of the transcriptional status of both RNA polymerase (Pol) I and II: promotes ribosomal RNA (rRNA) processing and transcription from polymerase II (Pol II) (PubMed:25470060). Binds various RNAs, such as rRNAs, snoRNAs, 7SK and, at lower extent, mRNAs (PubMed:25470060). In the nucleolus, localizes to rDNA locus, where it directly binds rRNAs and snoRNAs, and promotes rRNA transcription, processing and modification. Required for rRNA 2-O-methylation, possibly by promoting the recruitment of late-acting snoRNAs SNORD56 and SNORD58 with pre-ribosomal complexes (PubMed:25470060, PubMed:25477391). In the nucleoplasm, binds 7SK RNA and is recruited to the promoters of Pol II-transcribed genes: acts by facilitating the release of P-TEFb from inhibitory 7SK snRNP in a manner that is dependent on its helicase activity, thereby promoting transcription of its target genes (PubMed:25470060). Functions as cofactor for JUN-activated transcription: required for phosphorylation of JUN at Ser-77 (PubMed:11823437, PubMed:25260534). Can unwind double-stranded RNA (helicase) and can fold or introduce a secondary structure to a single-stranded RNA (foldase) (PubMed:9461305). Involved in rRNA processing (PubMed:14559904, PubMed:18180292).

Gene Wiki entry for DDX21 Gene

No data available for CIViC summary , Tocris Summary , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for DDX21 Gene

Genomics for DDX21 Gene

Regulatory Elements for DDX21 Gene

Enhancers for DDX21 Gene
GeneHancer Identifier Enhancer Score Enhancer Sources Gene-Enhancer Score TSS distance (kb) Number of Genes Away Size (kb) Transcription Factor Binding Sites within enhancer Gene Targets for Enhancer
GH10G069179 1.2 ENCODE 31.6 +224.5 224537 3.3 MLX CREB3L1 DMAP1 YY1 SLC30A9 ZNF143 ZNF263 SP3 TBX21 MEF2D DDX50 DDX21 CCAR1 TYSND1 HKDC1 MIR1254-1 SUPV3L1 LOC101928994 VPS26A
GH10G069055 2 FANTOM5 Ensembl ENCODE dbSUPER 14 +101.3 101261 3.6 PKNOX1 MLX CREB3L1 ARNT ARID4B SIN3A DMAP1 YY1 ZNF766 ZNF143 DDX21 DDX50 CCAR1 SRGN KIF1BP GC10P069047 GC10P069071
GH10G069085 1.8 FANTOM5 ENCODE dbSUPER 14.6 +133.9 133896 8.7 HDGF PKNOX1 CREB3L1 ARNT WRNIP1 SIN3A ZNF2 YY1 ZNF766 CBX5 DDX50 DDX21 SRGN RUFY2 SUPV3L1 HKDC1 PBLD LOC101928994 TACR2 VPS26A
GH10G069315 1.7 FANTOM5 ENCODE dbSUPER 13.8 +362.6 362575 7.2 HDGF PKNOX1 FOXA2 CREB3L1 ARNT AGO1 SIN3A ZNF2 ZNF207 FOS HK1 DDX21 ENSG00000231748 HKDC1 TYSND1 C10orf35 DDX50 RPS15AP28 TACR2
GH10G069227 1.5 Ensembl ENCODE dbSUPER 14.2 +273.4 273366 3.7 HDGF PKNOX1 MLX ARID4B YBX1 GATA2 ZNF263 SP5 JUNB TBX21 HKDC1 DDX21 ENSG00000231748 HK1 SUPV3L1 LOC101928994
- Elite enhancer and/or Elite enhancer-gene association Download GeneHancer data dump

Enhancers around DDX21 on UCSC Golden Path with GeneCards custom track

Promoters for DDX21 Gene
Ensembl Regulatory Elements (ENSRs) TSS Distance (bp) Size (bp) Binding Sites for Transcription Factors within promoters
ENSR00000029181 277 2401 MLX CREB3L1 AGO1 DMAP1 YBX1 YY1 SLC30A9 ZNF143 SP3 NFYC

Genomic Location for DDX21 Gene

Chromosome:
10
Start:
68,956,123 bp from pter
End:
68,985,073 bp from pter
Size:
28,951 bases
Orientation:
Plus strand

Genomic View for DDX21 Gene

Genes around DDX21 on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
DDX21 Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for DDX21 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for DDX21 Gene

Proteins for DDX21 Gene

  • Protein details for DDX21 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Q9NR30-DDX21_HUMAN
    Recommended name:
    Nucleolar RNA helicase 2
    Protein Accession:
    Q9NR30
    Secondary Accessions:
    • B2RDL0
    • Q13436
    • Q5VX41
    • Q68D35

    Protein attributes for DDX21 Gene

    Size:
    783 amino acids
    Molecular mass:
    87344 Da
    Quaternary structure:
    • Component of the B-WICH complex, at least composed of SMARCA5/SNF2H, BAZ1B/WSTF, SF3B1, DEK, MYO1C, ERCC6, MYBBP1A and DDX21. Interacts with C1QBP. Interacts with JUN (PubMed:11823437, PubMed:18180292). Interacts with WDR46 (PubMed:23848194).
    Miscellaneous:
    • Autoantibodies against DDX21 are found in patients with watermelon stomach disease, which is characterized by prominent stripes of ectatic vascular tissue in the stomach similar to stripes on a watermelon.
    SequenceCaution:
    • Sequence=AAB02546.1; Type=Erroneous initiation; Evidence={ECO:0000305};

    Three dimensional structures from OCA and Proteopedia for DDX21 Gene

    Alternative splice isoforms for DDX21 Gene

    UniProtKB/Swiss-Prot:

neXtProt entry for DDX21 Gene

Selected DME Specific Peptides for DDX21 Gene

Q9NR30:
  • VAARGLDI
  • NGKLDLT
  • VGTPGRI
  • HVVLDEVDQMLD
  • YIHRSGRT
  • ILVGTPGR
  • AARGLDIP
  • SFAIPLIE
  • LAPTREL
  • GRTGRAG
  • VAKKYMKS
  • PKPKKMKK
  • TNVAARGLD
  • APTRELA
  • DSEDNPQTLLFSATCP
  • EQKEGAFSNF

Post-translational modifications for DDX21 Gene

  • Modification sites at PhosphoSitePlus
  • Modification sites at neXtProt

Other Protein References for DDX21 Gene

Domains & Families for DDX21 Gene

Gene Families for DDX21 Gene

Suggested Antigen Peptide Sequences for DDX21 Gene

GenScript: Design optimal peptide antigens:

Graphical View of Domain Structure for InterPro Entry

Q9NR30

UniProtKB/Swiss-Prot:

DDX21_HUMAN :
  • The helicase and foldase activities reside in two separate domains, the helicase in the N-terminus and the foldase in the C-terminus.
  • Belongs to the DEAD box helicase family. DDX21/DDX50 subfamily.
Domain:
  • The helicase and foldase activities reside in two separate domains, the helicase in the N-terminus and the foldase in the C-terminus.
  • The 3 X 5 AA repeats seem to be critical for the RNA folding activity.
Family:
  • Belongs to the DEAD box helicase family. DDX21/DDX50 subfamily.
genes like me logo Genes that share domains with DDX21: view

Function for DDX21 Gene

Molecular function for DDX21 Gene

UniProtKB/Swiss-Prot CatalyticActivity:
ATP + H(2)O = ADP + phosphate.
UniProtKB/Swiss-Prot Function:
RNA helicase that acts as a sensor of the transcriptional status of both RNA polymerase (Pol) I and II: promotes ribosomal RNA (rRNA) processing and transcription from polymerase II (Pol II) (PubMed:25470060). Binds various RNAs, such as rRNAs, snoRNAs, 7SK and, at lower extent, mRNAs (PubMed:25470060). In the nucleolus, localizes to rDNA locus, where it directly binds rRNAs and snoRNAs, and promotes rRNA transcription, processing and modification. Required for rRNA 2-O-methylation, possibly by promoting the recruitment of late-acting snoRNAs SNORD56 and SNORD58 with pre-ribosomal complexes (PubMed:25470060, PubMed:25477391). In the nucleoplasm, binds 7SK RNA and is recruited to the promoters of Pol II-transcribed genes: acts by facilitating the release of P-TEFb from inhibitory 7SK snRNP in a manner that is dependent on its helicase activity, thereby promoting transcription of its target genes (PubMed:25470060). Functions as cofactor for JUN-activated transcription: required for phosphorylation of JUN at Ser-77 (PubMed:11823437, PubMed:25260534). Can unwind double-stranded RNA (helicase) and can fold or introduce a secondary structure to a single-stranded RNA (foldase) (PubMed:9461305). Involved in rRNA processing (PubMed:14559904, PubMed:18180292).

Enzyme Numbers (IUBMB) for DDX21 Gene

Gene Ontology (GO) - Molecular Function for DDX21 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0003676 nucleic acid binding IEA --
GO:0003723 RNA binding IDA 22658674
GO:0003725 double-stranded RNA binding IEA --
GO:0004004 ATP-dependent RNA helicase activity TAS,IMP 25470060
GO:0004386 helicase activity IEA --
genes like me logo Genes that share ontologies with DDX21: view
genes like me logo Genes that share phenotypes with DDX21: view

Animal Model Products

Inhibitory RNA Products

Clone Products

No data available for Human Phenotype Ontology , Animal Models , Transcription Factor Targets and HOMER Transcription for DDX21 Gene

Localization for DDX21 Gene

Subcellular locations from UniProtKB/Swiss-Prot for DDX21 Gene

Nucleus, nucleolus. Nucleus, nucleoplasm. Note=Present both in nucleolus and nucleoplasm. Interaction with JUN promotes translocation from the nucleolus to the nucleoplasm (PubMed:11823437, PubMed:18180292). Interaction with WDR46 is required for localization to the nucleolus (PubMed:23848194). {ECO:0000269 PubMed:11823437, ECO:0000269 PubMed:18180292, ECO:0000269 PubMed:23848194}.

Subcellular locations from

COMPARTMENTS
Extracellular space Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi Apparatus Nucleus Mitochondrion 0 1 2 3 4 5 Confidence
COMPARTMENTS Subcellular localization image for DDX21 gene
Compartment Confidence
nucleus 5
cytosol 3
mitochondrion 1

Gene Ontology (GO) - Cellular Components for DDX21 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005634 nucleus IDA --
GO:0005654 nucleoplasm TAS --
GO:0005730 nucleolus IDA,TAS --
GO:0016020 membrane IDA 16210410
genes like me logo Genes that share ontologies with DDX21: view

Pathways & Interactions for DDX21 Gene

genes like me logo Genes that share pathways with DDX21: view

Gene Ontology (GO) - Biological Process for DDX21 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0001649 osteoblast differentiation IDA 16210410
GO:0006351 transcription, DNA-templated IEA --
GO:0006364 rRNA processing IEA --
GO:0006366 transcription from RNA polymerase II promoter IMP 25470060
GO:0009615 response to virus IEA --
genes like me logo Genes that share ontologies with DDX21: view

No data available for SIGNOR curated interactions for DDX21 Gene

Drugs & Compounds for DDX21 Gene

(3) Drugs for DDX21 Gene - From: HMDB

Name Status Disease Links Group Role Mechanism of Action Clinical Trials
Phosphoric acid Approved Pharma 0
Water Approved Pharma 0
Adenosine triphosphate Approved Nutra 0

(1) Additional Compounds for DDX21 Gene - From: HMDB

Name Synonyms Role CAS Number PubChem IDs PubMed IDs
ADP
  • Adenosindiphosphorsaeure
  • Adenosine 5'-pyrophosphate
  • Adenosine diphosphate
  • Adenosine pyrophosphate
  • Adenosine-5'-diphosphate
Full agonist, Agonist 58-64-0
genes like me logo Genes that share compounds with DDX21: view

Transcripts for DDX21 Gene

Unigene Clusters for DDX21 Gene

DEAD (Asp-Glu-Ala-Asp) box helicase 21:
Representative Sequences:

Inhibitory RNA Products

Clone Products

Alternative Splicing Database (ASD) splice patterns (SP) for DDX21 Gene

No ASD Table

Relevant External Links for DDX21 Gene

GeneLoc Exon Structure for
DDX21
ECgene alternative splicing isoforms for
DDX21

Expression for DDX21 Gene

mRNA expression in normal human tissues from GTEx, Illumina, BioGPS, and CGAP SAGE for DDX21 Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

Protein differential expression in normal tissues from HIPED for DDX21 Gene

This gene is overexpressed in Peripheral blood mononuclear cells (21.0), Tlymphocyte (6.3), and Stomach (6.0).

Integrated Proteomics: protein expression in normal tissues and cell lines from ProteomicsDB, PaxDb, MaxQB, and MOPED for DDX21 Gene



Protein tissue co-expression partners for DDX21 Gene

- Elite partner

NURSA nuclear receptor signaling pathways regulating expression of DDX21 Gene:

DDX21

SOURCE GeneReport for Unigene cluster for DDX21 Gene:

Hs.223141

Evidence on tissue expression from TISSUES for DDX21 Gene

  • Liver(4.8)
  • Intestine(4.4)
  • Muscle(4.4)
  • Nervous system(3.4)
  • Skin(3.2)
  • Lung(2.5)
  • Kidney(2.4)
  • Spleen(2.4)
  • Blood(2.3)
  • Bone marrow(2)
genes like me logo Genes that share expression patterns with DDX21: view

Primer Products

No data available for mRNA differential expression in normal tissues , mRNA Expression by UniProt/SwissProt and Phenotype-based relationships between genes and organs from Gene ORGANizer for DDX21 Gene

Orthologs for DDX21 Gene

This gene was present in the common ancestor of eukaryotes.

Orthologs for DDX21 Gene

Organism Taxonomy Gene Similarity Type Details
chimpanzee
(Pan troglodytes)
Mammalia DDX21 34 35
  • 99.83 (n)
cow
(Bos Taurus)
Mammalia DDX21 34 35
  • 89.34 (n)
-- 35
  • 75 (a)
OneToMany
dog
(Canis familiaris)
Mammalia DDX21 34 35
  • 89.31 (n)
mouse
(Mus musculus)
Mammalia Ddx21 34 16 35
  • 86.07 (n)
rat
(Rattus norvegicus)
Mammalia Ddx21 34
  • 83.83 (n)
oppossum
(Monodelphis domestica)
Mammalia DDX21 35
  • 71 (a)
OneToOne
platypus
(Ornithorhynchus anatinus)
Mammalia DDX21 35
  • 66 (a)
OneToOne
chicken
(Gallus gallus)
Aves DDX50 34
  • 70.39 (n)
-- 35
  • 67 (a)
ManyToMany
-- 35
  • 65 (a)
ManyToMany
lizard
(Anolis carolinensis)
Reptilia -- 35
  • 61 (a)
OneToMany
tropical clawed frog
(Silurana tropicalis)
Amphibia ddx21 34
  • 63.18 (n)
zebrafish
(Danio rerio)
Actinopterygii ddx21 34 35
  • 64.37 (n)
-- 34
baker's yeast
(Saccharomyces cerevisiae)
Saccharomycetes TIF1 35
  • 32 (a)
ManyToMany
TIF2 35
  • 32 (a)
ManyToMany
DBP3 35
  • 29 (a)
ManyToMany
thale cress
(Arabidopsis thaliana)
eudicotyledons PRH75 34
  • 49.35 (n)
rice
(Oryza sativa)
Liliopsida Os09g0520700 34
  • 51.24 (n)
sea squirt
(Ciona savignyi)
Ascidiacea CSA.2984 35
  • 50 (a)
OneToMany
Species where no ortholog for DDX21 was found in the sources mined by GeneCards:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • African malaria mosquito (Anopheles gambiae)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • fruit fly (Drosophila melanogaster)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • rainbow trout (Oncorhynchus mykiss)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)

Evolution for DDX21 Gene

ENSEMBL:
Gene Tree for DDX21 (if available)
TreeFam:
Gene Tree for DDX21 (if available)

Paralogs for DDX21 Gene

Paralogs for DDX21 Gene

(8) SIMAP similar genes for DDX21 Gene using alignment to 2 proteins:

genes like me logo Genes that share paralogs with DDX21: view

Variants for DDX21 Gene

Sequence variations from dbSNP and Humsavar for DDX21 Gene

SNP ID Clin Chr 10 pos Sequence Context AA Info Type
rs1000029965 -- 68,957,702(+) TATTT(A/G)GTGGA intron-variant
rs1000051705 -- 68,964,445(+) TTTTG(A/G)GGACC intron-variant
rs1000322128 -- 68,964,218(+) TGACA(A/T)TTAAC intron-variant
rs1000376753 -- 68,969,652(+) TCTAT(C/T)TGAGT intron-variant
rs1000567999 -- 68,984,471(+) ACTTG(C/G)CAGTT utr-variant-3-prime

Structural Variations from Database of Genomic Variants (DGV) for DDX21 Gene

Variant ID Type Subtype PubMed ID
nsv519999 CNV loss 19592680
nsv831907 CNV gain 17160897
nsv948053 CNV duplication 23825009

Variation tolerance for DDX21 Gene

Residual Variation Intolerance Score: 39.8% of all genes are more intolerant (likely to be disease-causing)
Gene Damage Index Score: 2.10; 38.40% of all genes are more intolerant (likely to be disease-causing)

Relevant External Links for DDX21 Gene

SNPedia medical, phenotypic, and genealogical associations of SNPs for
DDX21

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for DDX21 Gene

Disorders for DDX21 Gene

MalaCards: The human disease database

(6) MalaCards diseases for DDX21 Gene - From: DISEASES and GeneCards

Disorder Aliases PubMed IDs
stomach disease
  • gastric disease
cerebral creatine deficiency syndrome 3
  • agat deficiency
cerebral creatine deficiency syndrome 2
  • guanidinoacetate methyltransferase deficiency
cerebral creatine deficiency syndrome
  • cerebral creatine deficiency syndromes
neurodermatitis
- elite association - COSMIC cancer census association via MalaCards
Search DDX21 in MalaCards View complete list of genes associated with diseases

Relevant External Links for DDX21

Genetic Association Database (GAD)
DDX21
Human Genome Epidemiology (HuGE) Navigator
DDX21
Atlas of Genetics and Cytogenetics in Oncology and Haematology:
DDX21
genes like me logo Genes that share disorders with DDX21: view

No data available for UniProtKB/Swiss-Prot and Genatlas for DDX21 Gene

Publications for DDX21 Gene

  1. c-Jun supports ribosomal RNA processing and nucleolar localization of RNA helicase DDX21. (PMID: 18180292) HolmstrAPm T.H. … Westermarck J. (J. Biol. Chem. 2008) 2 3 4 64
  2. A nucleolar RNA helicase recognized by autoimmune antibodies from a patient with watermelon stomach disease. (PMID: 8614622) Valdez B.C. … Busch H. (Nucleic Acids Res. 1996) 2 3 4 64
  3. The association of late-acting snoRNPs with human pre-ribosomal complexes requires the RNA helicase DDX21. (PMID: 25477391) Sloan K.E. … Bohnsack M.T. (Nucleic Acids Res. 2015) 3 4 64
  4. RNA helicase DDX21 coordinates transcription and ribosomal RNA processing. (PMID: 25470060) Calo E. … Wysocka J. (Nature 2015) 3 4 64
  5. Elevated DDX21 regulates c-Jun activity and rRNA processing in human breast cancers. (PMID: 25260534) Zhang Y. … Weber J.D. (Breast Cancer Res. 2014) 3 4 64

Products for DDX21 Gene

Sources for DDX21 Gene

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