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Cattle vs Sheep LastZ results

Cattle (Bos taurus, ARS-UCD2.0) and Sheep (Ovis aries, ARS-UI_Ramb_v2.0) 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

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

Statistics over 871,766 alignment blocks

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

Uncovered: 466,688,102 out of 2,770,686,120
Covered: 2,303,998,018 out of 2,770,686,120

Uncovered: 834,499 out of 35,918,484
Matches: 33,950,800 out of 35,918,484
Mismatches: 1,082,682 out of 35,918,484
Insertions: 50,503 out of 35,918,484
Identity over aligned base-pairs: 96.8%

Sheep

Uncovered: 385,234,329 out of 2,628,146,905
Covered: 2,242,912,576 out of 2,628,146,905

Uncovered: 1,543,145 out of 36,241,706
Matches: 33,583,695 out of 36,241,706
Mismatches: 1,063,276 out of 36,241,706
Insertions: 51,590 out of 36,241,706
Identity over aligned base-pairs: 96.8%

Block size distribution

Size range All 871,766 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
18,009
113.2 kb
10 bp - 100 bp
62,305
3.2 Mb
15,136
956.3 kb
100 bp - 1 kb
265,421
123.1 Mb
37,582
11.4 Mb
1 kb - 10 kb
491,289
1.7 Gb
5,743
15.6 Mb
10 kb - 100 kb
34,738
506.9 Mb
1,062
26.2 Mb
100 kb - 1 Mb
4
488.7 kb
59
13.5 Mb
1 Mb - 10 Mb
8
37.7 Mb
10 Mb - 100 Mb
26
1.6 Gb
100 Mb - 1 Gb
6
668.0 Mb