Cow vs Pig LastZ results

Cow (Bos taurus, ARS-UCD1.3) and Pig (Sus scrofa, Sscrofa11.1) 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

ParameterCowPig
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size10,100,00010,100,000
Masking options

Statistics over 2,450,521 alignment blocks

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

Uncovered: 1,170,966,517 out of 2,711,209,831
Covered: 1,540,243,314 out of 2,711,209,831

Uncovered: 2,355,033 out of 37,648,360
Matches: 31,416,943 out of 37,648,360
Mismatches: 3,652,506 out of 37,648,360
Insertions: 223,878 out of 37,648,360
Identity over aligned base-pairs: 89.0%

Pig

Uncovered: 1,009,820,105 out of 2,501,912,388
Covered: 1,492,092,283 out of 2,501,912,388

Uncovered: 2,471,459 out of 35,419,727
Matches: 29,515,080 out of 35,419,727
Mismatches: 3,251,776 out of 35,419,727
Insertions: 181,412 out of 35,419,727
Identity over aligned base-pairs: 89.6%

Block size distribution

Size range All 2,450,521 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
109,353
702.3 kb
10 bp - 100 bp
249,501
12.4 Mb
15,127
1.0 Mb
100 bp - 1 kb
1,594,397
697.4 Mb
46,138
15.6 Mb
1 kb - 10 kb
496,437
891.8 Mb
10,103
26.1 Mb
10 kb - 100 kb
833
11.7 Mb
941
21.1 Mb
100 kb - 1 Mb
91
30.1 Mb
1 Mb - 10 Mb
75
318.7 Mb
10 Mb - 100 Mb
52
1.2 Gb