Cow vs Blue whale LastZ results

Cow (Bos taurus, ARS-UCD1.3) and Blue whale (Balaenoptera musculus, mBalMus1.v2) 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

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

Statistics over 1,997,024 alignment blocks

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

Uncovered: 1,029,026,429 out of 2,711,209,831
Covered: 1,682,183,402 out of 2,711,209,831

Uncovered: 2,932,183 out of 37,648,360
Matches: 31,659,386 out of 37,648,360
Mismatches: 2,909,557 out of 37,648,360
Insertions: 147,234 out of 37,648,360
Identity over aligned base-pairs: 91.2%

Blue whale

Uncovered: 730,591,217 out of 2,379,995,981
Covered: 1,649,404,764 out of 2,379,995,981

Uncovered: 885,156 out of 31,093,315
Matches: 27,855,034 out of 31,093,315
Mismatches: 2,241,405 out of 31,093,315
Insertions: 111,720 out of 31,093,315
Identity over aligned base-pairs: 92.2%

Block size distribution

Size range All 1,997,024 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
68,221
440.1 kb
10 bp - 100 bp
186,513
9.5 Mb
21,206
1.4 Mb
100 bp - 1 kb
1,151,886
525.8 Mb
51,542
16.2 Mb
1 kb - 10 kb
588,468
1.2 Gb
9,299
24.3 Mb
10 kb - 100 kb
1,928
28.0 Mb
975
22.4 Mb
100 kb - 1 Mb
8
1.1 Mb
68
25.4 Mb
1 Mb - 10 Mb
48
218.4 Mb
10 Mb - 100 Mb
54
1.4 Gb