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Cattle vs Pig LastZ results

Cattle (Bos taurus, ARS-UCD2.0) and Pig (Sus scrofa, Sscrofa11.1) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 114. Cattle 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

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

Statistics over 2,457,669 alignment blocks

Genome coverage (bp) Coding exon coverage (bp)
Cattle

Uncovered: 1,227,248,848 out of 2,770,686,120
Covered: 1,543,437,272 out of 2,770,686,120

Uncovered: 1,305,998 out of 35,918,484
Matches: 30,910,726 out of 35,918,484
Mismatches: 3,506,025 out of 35,918,484
Insertions: 195,735 out of 35,918,484
Identity over aligned base-pairs: 89.3%

Pig

Uncovered: 1,009,587,376 out of 2,501,912,388
Covered: 1,492,325,012 out of 2,501,912,388

Uncovered: 2,446,359 out of 35,448,596
Matches: 29,565,492 out of 35,448,596
Mismatches: 3,256,291 out of 35,448,596
Insertions: 180,454 out of 35,448,596
Identity over aligned base-pairs: 89.6%

Block size distribution

Size range All 2,457,669 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
109,636
704.1 kb
10 bp - 100 bp
249,937
12.5 Mb
15,120
1.0 Mb
100 bp - 1 kb
1,600,223
699.8 Mb
46,378
15.7 Mb
1 kb - 10 kb
497,039
892.8 Mb
10,113
26.0 Mb
10 kb - 100 kb
834
11.7 Mb
980
21.9 Mb
100 kb - 1 Mb
93
30.5 Mb
1 Mb - 10 Mb
76
320.9 Mb
10 Mb - 100 Mb
52
1.2 Gb