Pig vs Sheep LastZ results

Pig (Sus scrofa, Sscrofa11.1) and Sheep (Ovis aries, ARS-UI_Ramb_v2.0) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 111. Pig 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

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

Statistics over 2,396,820 alignment blocks

Genome coverage (bp) Coding exon coverage (bp)
Pig

Uncovered: 980,095,785 out of 2,501,912,388
Covered: 1,521,816,603 out of 2,501,912,388

Uncovered: 1,156,924 out of 35,419,727
Matches: 30,533,318 out of 35,419,727
Mismatches: 3,532,636 out of 35,419,727
Insertions: 196,849 out of 35,419,727
Identity over aligned base-pairs: 89.1%

Sheep

Uncovered: 1,164,876,730 out of 2,628,146,905
Covered: 1,463,270,175 out of 2,628,146,905

Uncovered: 3,102,017 out of 36,241,706
Matches: 29,618,539 out of 36,241,706
Mismatches: 3,337,427 out of 36,241,706
Insertions: 183,723 out of 36,241,706
Identity over aligned base-pairs: 89.4%

Block size distribution

Size range All 2,396,820 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
107,242
690.0 kb
10 bp - 100 bp
248,262
12.3 Mb
17,958
1.2 Mb
100 bp - 1 kb
1,545,063
680.1 Mb
59,415
20.5 Mb
1 kb - 10 kb
495,447
892.7 Mb
14,351
35.4 Mb
10 kb - 100 kb
805
11.6 Mb
994
24.0 Mb
100 kb - 1 Mb
1
139.6 kb
82
26.4 Mb
1 Mb - 10 Mb
81
329.8 Mb
10 Mb - 100 Mb
49
1.2 Gb