Chromosome 21 open reading frame 56, DKFZp434N0650, MGC99490, Uncharacterized protein C21orf56, SPC1L_HUMAN.
The smallest of the human chromosomes, 21 makes up about 1.5% of the human genome. Chromosome 21 contains nearly 300 genes and 47 million base pairs. Down syndrome, also known as trisomy 21, is the disease most commonly associated with chromosome 21. Alz