Gene Information
Gene NameDDX21
OrganismHomo sapiens (Human)
Gene Length547
Protein NamesProbable ATP-dependent RNA helicase DDX56 (EC 3.6.4.13) (ATP-dependent 61 kDa nucleolar RNA helicase) (DEAD box protein 21) (DEAD box protein 56)
Target NameNA
Target TypeNA
Gene Age544 ( ENSG00000165732 )
Evolutionary StageEuk+Bac
AlphaFoldDBQ9NY93
Gene CardDDX56
Uniprot IDQ9NY93
PfamPF00270; PF00271
In ASDno
Allosteric Predictionyes (0.312880326)
Ortholog in AnimalsAlpaca_ DDX21 ( ortholog_one2one )
Dog_ DDX21 ( ortholog_one2one )
GuineaPig_ DDX21 ( ortholog_one2one )
Macaque_ KIFBP ( ortholog_one2one )
Mouse_ Ddx21 ( ortholog_one2one )
Pig_ DDX21 ( ortholog_one2one )
Rat_ Ddx21 ( ortholog_one2one )
Rabbit_ DDX21 ( ortholog_one2one )
OhnologsNA
ParalogsDDX28, DDX42, DDX25, DDX47, DDX49, DDX20, DDX50, DDX41, DDX24, TDRD12, DDX5, DDX52, DDX56, DDX3X, DDX3Y, DDX59, DDX39B, DDX23, EIF4A3, DDX54, DDX10, DDX19A, DDX19B, EIF4A1, DDX6, DDX39A, DDX55, DDX18, DDX4, DDX1, DDX53, DDX17, DDX31, DDX51, DDX43, EIF4A2, DDX27, DDX46
TissueNA
Tissue SpecificityDetected in heart, brain, liver, pancreas, placenta and lung.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB NA 
DBSNP NA 
Subcellular location [CC]Nucleus, nucleolus {ECO:0000269|PubMed:12429849, ECO:0000269|PubMed:22925334, ECO:0000269|PubMed:31340999, ECO:0000269|PubMed:33789112}.
Mouse PG classificationNA
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