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
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 size10,100,000
Masking options{default_soft_masking => 1}{default_soft_masking => 1}

Statistics over 372,976 alignment blocks

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

Uncovered: 2,985,360,206 out of 3,099,750,718
Covered: 114,390,512 out of 3,099,750,718

Uncovered: 9,190,580 out of 38,571,754
Matches: 21,822,888 out of 38,571,754
Mismatches: 7,131,070 out of 38,571,754
Insertions: 427,216 out of 38,571,754
Identity over aligned base-pairs: 74.3%

Painted turtle

Uncovered: 2,269,512,559 out of 2,365,766,571
Covered: 96,254,012 out of 2,365,766,571

Uncovered: 8,346,498 out of 33,484,189
Matches: 18,896,441 out of 33,484,189
Mismatches: 5,889,018 out of 33,484,189
Insertions: 352,232 out of 33,484,189
Identity over aligned base-pairs: 75.2%

Block size distribution

Size range All 372,976 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
854
4.6 kb
10 bp - 100 bp
43,480
3.2 Mb
14,735
1.1 Mb
100 bp - 1 kb
312,928
93.4 Mb
126,857
45.2 Mb
1 kb - 10 kb
15,634
24.6 Mb
21,039
47.8 Mb
10 kb - 100 kb
79
2.2 Mb
930
21.2 Mb
100 kb - 1 Mb
1
100.3 kb
43
8.1 Mb