Mouse vs Squirrel LastZ results

Mouse (Mus musculus, GRCm39) and Squirrel (Ictidomys tridecemlineatus, SpeTri2.0) 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
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

ParameterMouseSquirrel
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size10,100,000
Masking options

Statistics over 1,481,157 alignment blocks

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

Uncovered: 1,734,910,252 out of 2,728,222,451
Covered: 993,312,199 out of 2,728,222,451

Uncovered: 2,300,823 out of 39,092,596
Matches: 29,731,943 out of 39,092,596
Mismatches: 6,740,848 out of 39,092,596
Insertions: 318,982 out of 39,092,596
Identity over aligned base-pairs: 80.8%

Squirrel

Uncovered: 1,526,106,920 out of 2,478,410,228
Covered: 952,303,308 out of 2,478,410,228

Uncovered: 995,704 out of 30,223,248
Matches: 24,728,894 out of 30,223,248
Mismatches: 4,310,026 out of 30,223,248
Insertions: 188,624 out of 30,223,248
Identity over aligned base-pairs: 84.6%

Block size distribution

Size range All 1,481,157 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
20,807
138.7 kb
10 bp - 100 bp
140,524
7.7 Mb
15,513
1.1 Mb
100 bp - 1 kb
969,039
448.7 Mb
70,557
28.0 Mb
1 kb - 10 kb
350,214
618.4 Mb
22,822
55.0 Mb
10 kb - 100 kb
571
8.2 Mb
1,153
25.1 Mb
100 kb - 1 Mb
2
273.2 kb
336
145.4 Mb
1 Mb - 10 Mb
281
734.4 Mb
10 Mb - 100 Mb
7
94.4 Mb