Mouse vs Steppe mouse LastZ results

Mouse (Mus musculus, GRCm39) and Steppe mouse (Mus spicilegus, MUSP714) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 103. Mouse 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

ParameterMouseSteppe mouse
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size010,100,000
Masking options

Statistics over 599,731 alignment blocks

Genome coverage (bp) Coding exon coverage (bp)
Mouse

Uncovered: 299,689,216 out of 2,728,222,451
Covered: 2,428,533,235 out of 2,728,222,451

Uncovered: 271,860 out of 72,028,242
Matches: 70,024,144 out of 72,028,242
Mismatches: 1,672,868 out of 72,028,242
Insertions: 59,370 out of 72,028,242
Identity over aligned base-pairs: 97.6%

Steppe mouse

Uncovered: 237,873,011 out of 2,496,083,520
Covered: 2,258,210,509 out of 2,496,083,520

Uncovered: 1,032,271 out of 38,767,275
Matches: 37,294,923 out of 38,767,275
Mismatches: 419,147 out of 38,767,275
Insertions: 20,934 out of 38,767,275
Identity over aligned base-pairs: 98.8%

Block size distribution

Size range All 599,731 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
7,797
45.9 kb
10 bp - 100 bp
68,897
3.5 Mb
20,781
1.2 Mb
100 bp - 1 kb
165,745
72.0 Mb
48,305
18.7 Mb
1 kb - 10 kb
284,619
1.1 Gb
45,522
149.3 Mb
10 kb - 100 kb
72,661
1.2 Gb
5,709
136.7 Mb
100 kb - 1 Mb
12
1.5 Mb
1,204
460.5 Mb
1 Mb - 10 Mb
689
1.7 Gb
10 Mb - 100 Mb
2
21.6 Mb