Cow vs Sheep LastZ results

Cow (Bos taurus, ARS-UCD1.3) and Sheep (Ovis aries, ARS-UI_Ramb_v2.0) 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

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

Statistics over 866,905 alignment blocks

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

Uncovered: 414,150,823 out of 2,711,209,831
Covered: 2,297,059,008 out of 2,711,209,831

Uncovered: 1,142,370 out of 37,648,360
Matches: 35,255,280 out of 37,648,360
Mismatches: 1,183,233 out of 37,648,360
Insertions: 67,477 out of 37,648,360
Identity over aligned base-pairs: 96.6%

Sheep

Uncovered: 385,095,141 out of 2,628,146,905
Covered: 2,243,051,764 out of 2,628,146,905

Uncovered: 1,553,029 out of 36,241,706
Matches: 33,575,809 out of 36,241,706
Mismatches: 1,061,365 out of 36,241,706
Insertions: 51,503 out of 36,241,706
Identity over aligned base-pairs: 96.8%

Block size distribution

Size range All 866,905 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
17,920
112.6 kb
10 bp - 100 bp
61,810
3.2 Mb
14,931
942.6 kb
100 bp - 1 kb
263,227
122.2 Mb
37,056
11.2 Mb
1 kb - 10 kb
489,232
1.7 Gb
5,655
15.4 Mb
10 kb - 100 kb
34,712
506.6 Mb
1,031
25.6 Mb
100 kb - 1 Mb
4
488.7 kb
57
13.3 Mb
1 Mb - 10 Mb
7
31.8 Mb
10 Mb - 100 Mb
26
1.6 Gb
100 Mb - 1 Gb
6
668.1 Mb