Human vs Tiger LastZ results

Human (Homo sapiens, GRCh38) and Tiger (Panthera tigris altaica, PanTig1.0) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 93. Human was used as the reference species. After running LastZ, the raw LastZ alignment blocks were chained according to their location in both genomes. During the final netting process, the best sub-chain was chosen in each region on the reference species.

Configuration parameters

ParameterValue
Gap open penalty (O)400
Gap extend penalty (E)30
HSP threshold (K)3000
Threshold for gapped extension (L)3000
Threshold for alignments between gapped alignment blocks (H)2200
Masking count (M)
Seed and Transition value (T)1
Scoring matrix (Q)
Default:
     A    C    G    T
    91 -114  -31 -123
  -114  100 -125  -31
   -31 -125  100 -114
  -123  -31 -114   91

Chunking parameters

ParameterHumanTiger
Chunk size30,000,00010,100,000
Overlap0100,000
Group set size010,100,000
Masking options{default_soft_masking => 1}{default_soft_masking => 1}

Statistics over 2,283,469 alignment blocks

Genome coverage (bp) Coding exon coverage (bp)
Human

Uncovered: 1,478,718,360 out of 3,096,649,726
Covered: 1,617,931,366 out of 3,096,649,726

Uncovered: 1,093,852 out of 35,522,272
Matches: 27,912,089 out of 35,522,272
Mismatches: 6,214,299 out of 35,522,272
Insertions: 302,032 out of 35,522,272
Identity over aligned base-pairs: 81.1%

Tiger

Uncovered: 870,895,633 out of 2,391,065,193
Covered: 1,520,169,560 out of 2,391,065,193

Uncovered: 541,337 out of 27,396,606
Matches: 23,509,968 out of 27,396,606
Mismatches: 3,243,733 out of 27,396,606
Insertions: 101,568 out of 27,396,606
Identity over aligned base-pairs: 87.5%

Block size distribution

Size range All 2,283,469 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
87,165
581.0 kb
10 bp - 100 bp
283,088
13.4 Mb
18,905
1.3 Mb
100 bp - 1 kb
1,351,110
610.3 Mb
57,729
20.6 Mb
1 kb - 10 kb
561,611
1.1 Gb
18,340
45.5 Mb
10 kb - 100 kb
490
6.9 Mb
1,670
41.6 Mb
100 kb - 1 Mb
5
604.8 kb
299
111.0 Mb
1 Mb - 10 Mb
342
1.2 Gb
10 Mb - 100 Mb
23
317.7 Mb