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Cattle vs Alpaca LastZ results

Cattle (Bos taurus, ARS-UCD2.0) and Alpaca (Vicugna pacos, vicPac1) 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

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

Statistics over 1,700,900 alignment blocks

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

Uncovered: 1,308,756,717 out of 2,770,686,120
Covered: 1,461,929,403 out of 2,770,686,120

Uncovered: 6,994,514 out of 35,918,484
Matches: 19,849,317 out of 35,918,484
Mismatches: 8,911,360 out of 35,918,484
Insertions: 163,293 out of 35,918,484
Identity over aligned base-pairs: 68.6%

Alpaca

Uncovered: 1,561,280,143 out of 2,967,746,133
Covered: 1,406,465,990 out of 2,967,746,133

Uncovered: 1,958,194 out of 19,005,742
Matches: 14,399,894 out of 19,005,742
Mismatches: 2,597,546 out of 19,005,742
Insertions: 50,108 out of 19,005,742
Identity over aligned base-pairs: 84.5%

Block size distribution

Size range All 1,700,900 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
57,690
370.9 kb
10 bp - 100 bp
145,299
7.3 Mb
15,157
1.0 Mb
100 bp - 1 kb
1,026,599
472.0 Mb
83,790
36.8 Mb
1 kb - 10 kb
464,347
889.0 Mb
46,507
131.9 Mb
10 kb - 100 kb
6,965
142.0 Mb
8,038
253.9 Mb
100 kb - 1 Mb
2,749
807.5 Mb
1 Mb - 10 Mb
193
279.6 Mb