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Human vs Pig USMARC LastZ results

Human (Homo sapiens, GRCh38) and Pig USMARC (Sus scrofa, USMARCv1.0) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 97. Human 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
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

ParameterHumanPig USMARC
Chunk size30,000,00010,100,000
Overlap0100,000
Group set size10,100,000
Masking options{default_soft_masking => 1}{default_soft_masking => 1}

Statistics over 2,311,298 alignment blocks

Genome coverage (bp) Coding exon coverage (bp)
Human

Uncovered: 1,605,457,028 out of 3,099,750,718
Covered: 1,494,293,690 out of 3,099,750,718

Uncovered: 1,910,457 out of 38,571,754
Matches: 31,325,673 out of 38,571,754
Mismatches: 4,871,356 out of 38,571,754
Insertions: 464,268 out of 38,571,754
Identity over aligned base-pairs: 85.4%

Pig USMARC

Uncovered: 1,357,522,016 out of 2,755,438,035
Covered: 1,397,916,019 out of 2,755,438,035

Uncovered: 3,037,098 out of 35,166,034
Matches: 28,014,432 out of 35,166,034
Mismatches: 3,912,564 out of 35,166,034
Insertions: 201,940 out of 35,166,034
Identity over aligned base-pairs: 87.2%

Block size distribution

Size range All 2,311,298 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
88,385
587.7 kb
10 bp - 100 bp
285,864
13.9 Mb
17,702
1.2 Mb
100 bp - 1 kb
1,428,197
635.1 Mb
60,765
21.9 Mb
1 kb - 10 kb
507,993
941.8 Mb
19,633
49.6 Mb
10 kb - 100 kb
813
12.6 Mb
2,146
59.9 Mb
100 kb - 1 Mb
46
5.9 Mb
324
84.3 Mb
1 Mb - 10 Mb
70
264.0 Mb
10 Mb - 100 Mb
42
1.1 Gb