Cow vs Domestic yak LastZ results

Cow (Bos taurus, ARS-UCD1.3) and Domestic yak (Bos grunniens, LU_Bosgru_v3.0) 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

ParameterCowDomestic yak
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size10,100,00010,100,000
Masking options

Statistics over 405,339 alignment blocks

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

Uncovered: 185,391,760 out of 2,711,209,831
Covered: 2,525,818,071 out of 2,711,209,831

Uncovered: 974,143 out of 37,648,360
Matches: 36,279,186 out of 37,648,360
Mismatches: 347,577 out of 37,648,360
Insertions: 47,454 out of 37,648,360
Identity over aligned base-pairs: 98.9%

Domestic yak

Uncovered: 357,609,124 out of 2,832,776,395
Covered: 2,475,167,271 out of 2,832,776,395

Uncovered: 2,075,507 out of 34,628,786
Matches: 32,342,369 out of 34,628,786
Mismatches: 196,635 out of 34,628,786
Insertions: 14,275 out of 34,628,786
Identity over aligned base-pairs: 99.4%

Block size distribution

Size range All 405,339 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
2,319
14.2 kb
10 bp - 100 bp
18,240
961.9 kb
5,533
333.0 kb
100 bp - 1 kb
66,377
31.5 Mb
14,562
5.1 Mb
1 kb - 10 kb
233,625
1.0 Gb
4,266
12.9 Mb
10 kb - 100 kb
84,776
1.5 Gb
1,065
28.8 Mb
100 kb - 1 Mb
2
207.9 kb
69
14.9 Mb
1 Mb - 10 Mb
20
94.9 Mb
10 Mb - 100 Mb
45
1.9 Gb
100 Mb - 1 Gb
4
465.2 Mb