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Cattle vs American bison LastZ results

Cattle (Bos taurus, ARS-UCD2.0) and American bison (Bison bison bison, Bison_UMD1.0) 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

ParameterCattleAmerican bison
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size10,100,00010,100,000
Masking options

Statistics over 392,055 alignment blocks

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

Uncovered: 163,917,532 out of 2,770,686,120
Covered: 2,606,768,588 out of 2,770,686,120

Uncovered: 681,278 out of 35,918,484
Matches: 32,980,708 out of 35,918,484
Mismatches: 2,226,066 out of 35,918,484
Insertions: 30,432 out of 35,918,484
Identity over aligned base-pairs: 93.6%

American bison

Uncovered: 403,815,815 out of 2,953,622,319
Covered: 2,549,806,504 out of 2,953,622,319

Uncovered: 489,937 out of 30,104,366
Matches: 29,080,099 out of 30,104,366
Mismatches: 519,805 out of 30,104,366
Insertions: 14,525 out of 30,104,366
Identity over aligned base-pairs: 98.2%

Block size distribution

Size range All 392,055 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
3,234
21.0 kb
10 bp - 100 bp
27,566
1.4 Mb
7,556
455.8 kb
100 bp - 1 kb
93,173
42.7 Mb
22,097
8.3 Mb
1 kb - 10 kb
184,574
739.4 Mb
11,676
42.6 Mb
10 kb - 100 kb
83,412
1.8 Gb
7,735
169.3 Mb
100 kb - 1 Mb
96
11.0 Mb
369
118.8 Mb
1 Mb - 10 Mb
352
1.4 Gb
10 Mb - 100 Mb
61
890.7 Mb