Human vs Mexican tetra LastZ results

Human (Homo sapiens, GRCh38) and Mexican tetra (Astyanax mexicanus, Astyanax_mexicanus-2.0) 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

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

Statistics over 254,551 alignment blocks

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

Uncovered: 3,060,180,675 out of 3,096,649,726
Covered: 36,469,051 out of 3,096,649,726

Uncovered: 14,293,886 out of 35,619,351
Matches: 14,655,867 out of 35,619,351
Mismatches: 6,290,460 out of 35,619,351
Insertions: 379,138 out of 35,619,351
Identity over aligned base-pairs: 68.7%

Mexican tetra

Uncovered: 1,300,512,706 out of 1,335,239,194
Covered: 34,726,488 out of 1,335,239,194

Uncovered: 17,768,674 out of 42,605,471
Matches: 17,140,647 out of 42,605,471
Mismatches: 7,271,753 out of 42,605,471
Insertions: 424,397 out of 42,605,471
Identity over aligned base-pairs: 69.0%

Block size distribution

Size range All 254,551 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
1,568
7.1 kb
10 bp - 100 bp
49,845
3.8 Mb
16,987
1.3 Mb
100 bp - 1 kb
200,945
40.4 Mb
93,316
27.4 Mb
1 kb - 10 kb
2,159
3.8 Mb
9,164
17.9 Mb
10 kb - 100 kb
33
636.5 kb
116
2.0 Mb
100 kb - 1 Mb
1
120.5 kb
1
120.8 kb