Cow vs Beluga whale LastZ results

Cow (Bos taurus, ARS-UCD1.3) and Beluga whale (Delphinapterus leucas, ASM228892v3) 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

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

Statistics over 2,009,452 alignment blocks

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

Uncovered: 1,064,784,380 out of 2,711,209,831
Covered: 1,646,425,451 out of 2,711,209,831

Uncovered: 3,263,674 out of 37,648,360
Matches: 31,189,928 out of 37,648,360
Mismatches: 3,031,934 out of 37,648,360
Insertions: 162,824 out of 37,648,360
Identity over aligned base-pairs: 90.7%

Beluga whale

Uncovered: 752,417,588 out of 2,362,774,659
Covered: 1,610,357,071 out of 2,362,774,659

Uncovered: 1,041,336 out of 31,519,471
Matches: 27,956,736 out of 31,519,471
Mismatches: 2,372,110 out of 31,519,471
Insertions: 149,289 out of 31,519,471
Identity over aligned base-pairs: 91.7%

Block size distribution

Size range All 2,009,452 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
70,015
447.2 kb
10 bp - 100 bp
176,928
9.1 Mb
19,714
1.3 Mb
100 bp - 1 kb
1,185,274
541.2 Mb
50,045
16.0 Mb
1 kb - 10 kb
575,615
1.1 Gb
10,113
26.6 Mb
10 kb - 100 kb
1,620
22.9 Mb
1,014
22.9 Mb
100 kb - 1 Mb
83
33.6 Mb
1 Mb - 10 Mb
129
557.7 Mb
10 Mb - 100 Mb
53
1.1 Gb