Pig vs Pig - Meishan LastZ results

Pig (Sus scrofa, Sscrofa11.1) and Pig - Meishan (Sus scrofa, Meishan_pig_v1) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 98. Pig 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

ParameterPigPig - Meishan
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size010,100,000
Masking options{default_soft_masking => 1}{default_soft_masking => 1}

Statistics over 234,823 alignment blocks

Genome coverage (bp) Coding exon coverage (bp)
Pig

Uncovered: 74,442,364 out of 2,501,912,388
Covered: 2,427,470,024 out of 2,501,912,388

Uncovered: 723,490 out of 35,828,571
Matches: 34,451,067 out of 35,828,571
Mismatches: 633,706 out of 35,828,571
Insertions: 20,308 out of 35,828,571
Identity over aligned base-pairs: 98.1%

Pig - Meishan

Uncovered: 104,508,232 out of 2,467,495,771
Covered: 2,362,987,539 out of 2,467,495,771

Uncovered: 326,765 out of 34,405,547
Matches: 33,925,300 out of 34,405,547
Mismatches: 138,822 out of 34,405,547
Insertions: 14,660 out of 34,405,547
Identity over aligned base-pairs: 99.5%

Block size distribution

Size range All 234,823 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
3,993
26.2 kb
10 bp - 100 bp
28,824
1.4 Mb
11,617
697.2 kb
100 bp - 1 kb
65,835
24.6 Mb
33,764
10.7 Mb
1 kb - 10 kb
68,678
298.0 Mb
8,929
32.0 Mb
10 kb - 100 kb
65,896
1.9 Gb
2,600
89.5 Mb
100 kb - 1 Mb
1,597
210.4 Mb
2,078
860.0 Mb
1 Mb - 10 Mb
774
1.4 Gb