Human vs Eurasian red squirrel LastZ results

Human (Homo sapiens, GRCh38) and Eurasian red squirrel (Sciurus vulgaris, mSciVul1.1) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 101. 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

ParameterHumanEurasian red squirrel
Chunk size30,000,00010,100,000
Overlap0100,000
Group set size10,100,000
Masking options

Statistics over 2,583,992 alignment blocks

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

Uncovered: 1,473,743,287 out of 3,099,750,718
Covered: 1,626,007,431 out of 3,099,750,718

Uncovered: 1,423,834 out of 38,571,754
Matches: 31,895,991 out of 38,571,754
Mismatches: 4,768,221 out of 38,571,754
Insertions: 483,708 out of 38,571,754
Identity over aligned base-pairs: 85.9%

Eurasian red squirrel

Uncovered: 1,232,461,835 out of 2,878,591,032
Covered: 1,646,129,197 out of 2,878,591,032

Uncovered: 306,371 out of 33,947,064
Matches: 29,612,058 out of 33,947,064
Mismatches: 3,904,818 out of 33,947,064
Insertions: 123,817 out of 33,947,064
Identity over aligned base-pairs: 88.0%

Block size distribution

Size range All 2,583,992 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
76,410
512.1 kb
10 bp - 100 bp
358,405
18.4 Mb
61,214
4.2 Mb
100 bp - 1 kb
1,534,463
665.5 Mb
166,678
57.0 Mb
1 kb - 10 kb
613,571
1.2 Gb
49,081
124.7 Mb
10 kb - 100 kb
1,111
16.7 Mb
4,196
96.4 Mb
100 kb - 1 Mb
32
4.2 Mb
256
60.6 Mb
1 Mb - 10 Mb
51
192.2 Mb
10 Mb - 100 Mb
38
1.4 Gb