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Table 1. Number of nullomers found in the human genome and in various functional categories for kmer length up to 15 bp

From: Absent from DNA and protein: genomic characterization of nullomers and nullpeptides across functional categories and evolution

Length Genome Genic CCDS Exonic Intronic Promoter 5′UTR 3′UTR
Size of sequence space (bp) 30493128927
(100%)
1500831648
(46.77%)
34823267
1.09%
97533778
3.04%
1432130176
44.62%
151349111
4.72%
19990533
0.62%
49256976
1.53%
10 0 0 1553 65 0 55 6321 4783
11 104 480 159,400 29,908 1342 22,390 38,0030 235,512
12 44,287 115,211 3,798,220 1,459,145 179,991 1,157,400 5,954,005 4,008,652
13 2,347,664 3,986,232 37,728,254 21,795,714 4,889,886 18,632,872 46,458,594 34,749,772
14 40,798,250 59,680,430 222,865,418 173,484,802 65,434,475 155,022,567 240,489,521 211,238,387
15 405,373,474 504,426,674 1,018,873,404 935,392,848 523,843,630 889,865,066 1,042,269,144 999,624,368