Human vs Platyfish LastZ results

Human (Homo sapiens, GRCh38) and Platyfish (Xiphophorus maculatus, X_maculatus-5.0-male) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 94. 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

ParameterHumanPlatyfish
Chunk size30,000,00010,100,000
Overlap0100,000
Group set size010,100,000
Masking options

Statistics over 257,710 alignment blocks

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

Uncovered: 3,063,705,011 out of 3,096,649,726
Covered: 32,944,715 out of 3,096,649,726

Uncovered: 15,150,486 out of 35,619,351
Matches: 14,029,690 out of 35,619,351
Mismatches: 6,082,540 out of 35,619,351
Insertions: 356,635 out of 35,619,351
Identity over aligned base-pairs: 68.5%

Platyfish

Uncovered: 672,396,124 out of 704,321,165
Covered: 31,925,041 out of 704,321,165

Uncovered: 16,352,395 out of 39,808,847
Matches: 16,084,910 out of 39,808,847
Mismatches: 6,930,772 out of 39,808,847
Insertions: 440,770 out of 39,808,847
Identity over aligned base-pairs: 68.6%

Block size distribution

Size range All 257,710 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
1,555
6.9 kb
10 bp - 100 bp
52,726
4.0 Mb
15,565
1.2 Mb
100 bp - 1 kb
201,852
40.0 Mb
83,174
25.2 Mb
1 kb - 10 kb
1,567
2.4 Mb
9,746
18.9 Mb
10 kb - 100 kb
7
202.7 kb
72
1.1 Mb
100 kb - 1 Mb
3
367.9 kb
4
651.4 kb