Mouse vs Eurasian red squirrel LastZ results

Mouse (Mus musculus, GRCm39) and Eurasian red squirrel (Sciurus vulgaris, mSciVul1.1) 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

ParameterMouseEurasian red squirrel
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size010,100,000
Masking options

Statistics over 1,568,638 alignment blocks

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

Uncovered: 1,705,180,188 out of 2,728,222,451
Covered: 1,023,042,263 out of 2,728,222,451

Uncovered: 936,627 out of 36,014,121
Matches: 29,134,005 out of 36,014,121
Mismatches: 5,708,705 out of 36,014,121
Insertions: 234,784 out of 36,014,121
Identity over aligned base-pairs: 83.1%

Eurasian red squirrel

Uncovered: 1,884,333,720 out of 2,878,591,032
Covered: 994,257,312 out of 2,878,591,032

Uncovered: 2,620,454 out of 33,947,064
Matches: 26,357,554 out of 33,947,064
Mismatches: 4,709,202 out of 33,947,064
Insertions: 259,854 out of 33,947,064
Identity over aligned base-pairs: 84.1%

Block size distribution

Size range All 1,568,638 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
22,124
147.2 kb
10 bp - 100 bp
165,695
9.3 Mb
35,513
2.4 Mb
100 bp - 1 kb
1,018,831
466.5 Mb
89,920
29.9 Mb
1 kb - 10 kb
361,631
635.5 Mb
17,932
40.0 Mb
10 kb - 100 kb
347
5.6 Mb
535
14.3 Mb
100 kb - 1 Mb
10
1.2 Mb
123
42.1 Mb
1 Mb - 10 Mb
116
413.6 Mb
10 Mb - 100 Mb
33
575.9 Mb