Human vs Wallaby LastZ results

Human (Homo sapiens, GRCh38) and Wallaby (Notamacropus eugenii, Meug_1.0) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 76. 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

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

Statistics over 464,431 alignment blocks

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

Uncovered: 2,916,538,129 out of 3,099,750,718
Covered: 183,212,589 out of 3,099,750,718

Uncovered: 9,619,444 out of 38,571,754
Matches: 22,088,873 out of 38,571,754
Mismatches: 6,483,850 out of 38,571,754
Insertions: 379,587 out of 38,571,754
Identity over aligned base-pairs: 76.3%

Wallaby

Uncovered: 2,791,753,912 out of 2,955,773,937
Covered: 164,020,025 out of 2,955,773,937

Uncovered: 4,885,964 out of 25,589,509
Matches: 16,280,941 out of 25,589,509
Mismatches: 4,307,998 out of 25,589,509
Insertions: 114,606 out of 25,589,509
Identity over aligned base-pairs: 78.6%

Block size distribution

Size range All 464,431 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
1,289
7.0 kb
10 bp - 100 bp
47,122
3.3 Mb
22,542
1.6 Mb
100 bp - 1 kb
383,468
145.3 Mb
183,581
76.0 Mb
1 kb - 10 kb
32,551
47.0 Mb
42,895
94.9 Mb
10 kb - 100 kb
1
10.3 kb
1,357
22.9 Mb
100 kb - 1 Mb
1
161.9 kb