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
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

ParameterHumanWallaby
Chunk size30,000,00010,100,000
Overlap0100,000
Group set size010,100,000
Masking options{default_soft_masking => 1}

Statistics over 464,431 alignment blocks

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

Uncovered: 2,913,437,137 out of 3,096,649,726
Covered: 183,212,589 out of 3,096,649,726

Uncovered: 7,194,351 out of 35,228,305
Matches: 21,472,198 out of 35,228,305
Mismatches: 6,231,454 out of 35,228,305
Insertions: 330,302 out of 35,228,305
Identity over aligned base-pairs: 76.6%

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: 16,280,883 out of 25,589,509
Mismatches: 4,308,056 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