Human vs Painted turtle LastZ results

Human (Homo sapiens, GRCh38) and Painted turtle (Chrysemys picta bellii, Chrysemys_picta_bellii-3.0.3) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 95. 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

ParameterHumanPainted turtle
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 361,225 alignment blocks

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

Uncovered: 2,982,259,214 out of 3,096,649,726
Covered: 114,390,512 out of 3,096,649,726

Uncovered: 6,646,403 out of 35,570,071
Matches: 21,521,053 out of 35,570,071
Mismatches: 7,004,066 out of 35,570,071
Insertions: 398,549 out of 35,570,071
Identity over aligned base-pairs: 74.4%

Painted turtle

Uncovered: 2,269,549,185 out of 2,365,766,571
Covered: 96,217,386 out of 2,365,766,571

Uncovered: 8,351,168 out of 33,484,189
Matches: 18,893,771 out of 33,484,189
Mismatches: 5,887,013 out of 33,484,189
Insertions: 352,237 out of 33,484,189
Identity over aligned base-pairs: 75.2%

Block size distribution

Size range All 361,225 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
825
4.5 kb
10 bp - 100 bp
41,855
3.1 Mb
14,395
1.1 Mb
100 bp - 1 kb
303,168
90.8 Mb
123,857
44.1 Mb
1 kb - 10 kb
15,298
24.0 Mb
20,295
46.1 Mb
10 kb - 100 kb
78
2.1 Mb
905
20.7 Mb
100 kb - 1 Mb
1
100.3 kb
43
8.1 Mb