Human vs Tarsier LastZ results

Human (Homo sapiens, GRCh38) and Tarsier (Carlito syrichta, Tarsius_syrichta-2.0.1) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 91. 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)
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

ParameterHumanTarsier
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 2,801,864 alignment blocks

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

Uncovered: 1,191,550,571 out of 3,096,649,726
Covered: 1,905,099,155 out of 3,096,649,726

Uncovered: 869,647 out of 35,444,608
Matches: 29,740,388 out of 35,444,608
Mismatches: 4,574,271 out of 35,444,608
Insertions: 260,302 out of 35,444,608
Identity over aligned base-pairs: 86.0%

Tarsier

Uncovered: 1,682,370,079 out of 3,453,864,774
Covered: 1,771,494,695 out of 3,453,864,774

Uncovered: 986,268 out of 28,501,270
Matches: 24,606,317 out of 28,501,270
Mismatches: 2,828,547 out of 28,501,270
Insertions: 80,138 out of 28,501,270
Identity over aligned base-pairs: 89.4%

Block size distribution

Size range All 2,801,864 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
116,023
779.3 kb
10 bp - 100 bp
411,896
19.3 Mb
38,568
2.6 Mb
100 bp - 1 kb
1,642,155
701.6 Mb
160,242
51.4 Mb
1 kb - 10 kb
630,879
1.2 Gb
28,026
74.1 Mb
10 kb - 100 kb
901
12.5 Mb
7,224
268.2 Mb
100 kb - 1 Mb
10
1.1 Mb
5,226
1.5 Gb
1 Mb - 10 Mb
84
104.3 Mb