Cow vs Sperm whale LastZ results

Cow (Bos taurus, ARS-UCD1.3) and Sperm whale (Physeter catodon, ASM283717v2) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 111. Cow 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

ParameterCowSperm whale
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size10,100,00010,100,000
Masking options

Statistics over 2,037,088 alignment blocks

Genome coverage (bp) Coding exon coverage (bp)
Cow

Uncovered: 1,058,874,676 out of 2,711,209,831
Covered: 1,652,335,155 out of 2,711,209,831

Uncovered: 3,170,313 out of 37,648,360
Matches: 31,323,477 out of 37,648,360
Mismatches: 2,995,722 out of 37,648,360
Insertions: 158,848 out of 37,648,360
Identity over aligned base-pairs: 90.9%

Sperm whale

Uncovered: 892,309,234 out of 2,512,132,974
Covered: 1,619,823,740 out of 2,512,132,974

Uncovered: 1,263,510 out of 30,899,790
Matches: 27,281,213 out of 30,899,790
Mismatches: 2,243,273 out of 30,899,790
Insertions: 111,794 out of 30,899,790
Identity over aligned base-pairs: 92.1%

Block size distribution

Size range All 2,037,088 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
70,266
448.9 kb
10 bp - 100 bp
178,948
9.1 Mb
19,265
1.3 Mb
100 bp - 1 kb
1,203,924
550.9 Mb
50,163
16.2 Mb
1 kb - 10 kb
582,750
1.1 Gb
10,178
26.3 Mb
10 kb - 100 kb
1,200
15.8 Mb
2,982
94.6 Mb
100 kb - 1 Mb
296
68.8 Mb
1 Mb - 10 Mb
60
244.1 Mb
10 Mb - 100 Mb
53
1.3 Gb