Human vs Hagfish LastZ results

Human (Homo sapiens, GRCh38) and Hagfish (Eptatretus burgeri, Eburgeri_3.2) 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
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

ParameterHumanHagfish
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 113,237 alignment blocks

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

Uncovered: 3,077,791,304 out of 3,099,750,718
Covered: 21,959,414 out of 3,099,750,718

Uncovered: 26,112,176 out of 38,571,754
Matches: 8,300,099 out of 38,571,754
Mismatches: 4,002,449 out of 38,571,754
Insertions: 157,030 out of 38,571,754
Identity over aligned base-pairs: 66.6%

Hagfish

Uncovered: 2,596,381,930 out of 2,608,383,542
Covered: 12,001,612 out of 2,608,383,542

Uncovered: 16,375,450 out of 23,977,300
Matches: 5,077,497 out of 23,977,300
Mismatches: 2,411,583 out of 23,977,300
Insertions: 112,770 out of 23,977,300
Identity over aligned base-pairs: 66.8%

Block size distribution

Size range All 113,237 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
583
2.6 kb
10 bp - 100 bp
23,794
1.8 Mb
12,524
980.4 kb
100 bp - 1 kb
87,372
16.1 Mb
61,235
14.9 Mb
1 kb - 10 kb
1,435
3.7 Mb
2,476
5.6 Mb
10 kb - 100 kb
52
628.1 kb
66
865.9 kb
100 kb - 1 Mb
1
105.4 kb
1
105.4 kb