| DFFB | 
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| Identifiers | 
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| Aliases | DFFB, DNA fragmentation factor, 40kDa, beta polypeptide (caspase-activated DNase), CAD, CPAN, DFF-40, DFF2, DFF40, DNA fragmentation factor subunit beta | 
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| External IDs | OMIM: 601883; MGI: 1196287; HomoloGene: 3241; GeneCards: DFFB; OMA:DFFB - orthologs | 
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| | Gene location (Mouse) | 
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 |  |  | Chr. | Chromosome 4 (mouse) | 
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 |  |  | Band | 4|4 E2 | Start | 154,048,906 bp | 
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 | End | 154,059,583 bp | 
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| Wikidata | 
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Caspase-activated DNase (CAD) or DNA fragmentation factor subunit beta is a protein that in humans is encoded by the DFFB gene. It breaks up the DNA during apoptosis and promotes cell differentiation. It is usually an inactive monomer inhibited by ICAD. This is cleaved before dimerization.