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
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 size10,100,000
Masking options

Statistics over 262,569 alignment blocks

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

Uncovered: 3,063,281,667 out of 3,099,750,718
Covered: 36,469,051 out of 3,099,750,718

Uncovered: 17,050,001 out of 38,571,754
Matches: 14,787,350 out of 38,571,754
Mismatches: 6,345,537 out of 38,571,754
Insertions: 388,866 out of 38,571,754
Identity over aligned base-pairs: 68.7%

Mexican tetra

Uncovered: 1,300,505,091 out of 1,335,239,194
Covered: 34,734,103 out of 1,335,239,194

Uncovered: 17,767,334 out of 42,605,471
Matches: 17,141,328 out of 42,605,471
Mismatches: 7,272,361 out of 42,605,471
Insertions: 424,448 out of 42,605,471
Identity over aligned base-pairs: 69.0%

Block size distribution

Size range All 262,569 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
1,612
7.3 kb
10 bp - 100 bp
51,533
3.9 Mb
17,353
1.3 Mb
100 bp - 1 kb
207,070
41.7 Mb
95,534
28.2 Mb
1 kb - 10 kb
2,319
4.2 Mb
9,578
18.8 Mb
10 kb - 100 kb
34
648.2 kb
125
2.1 Mb
100 kb - 1 Mb
1
120.5 kb
1
120.8 kb