Cow vs Alpaca LastZ results

Cow (Bos taurus, ARS-UCD1.3) and Alpaca (Vicugna pacos, vicPac1) 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

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

Statistics over 1,697,079 alignment blocks

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

Uncovered: 1,251,273,363 out of 2,711,209,831
Covered: 1,459,936,468 out of 2,711,209,831

Uncovered: 7,944,477 out of 37,648,360
Matches: 20,194,817 out of 37,648,360
Mismatches: 9,330,729 out of 37,648,360
Insertions: 178,337 out of 37,648,360
Identity over aligned base-pairs: 68.0%

Alpaca

Uncovered: 1,561,378,432 out of 2,967,746,133
Covered: 1,406,367,701 out of 2,967,746,133

Uncovered: 1,957,457 out of 19,005,742
Matches: 14,401,305 out of 19,005,742
Mismatches: 2,596,989 out of 19,005,742
Insertions: 49,991 out of 19,005,742
Identity over aligned base-pairs: 84.5%

Block size distribution

Size range All 1,697,079 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
57,571
370.1 kb
10 bp - 100 bp
145,272
7.3 Mb
15,173
1.0 Mb
100 bp - 1 kb
1,023,276
470.6 Mb
83,320
36.6 Mb
1 kb - 10 kb
464,011
888.5 Mb
46,365
131.6 Mb
10 kb - 100 kb
6,949
141.7 Mb
8,016
253.0 Mb
100 kb - 1 Mb
2,746
806.9 Mb
1 Mb - 10 Mb
193
279.6 Mb