Human vs Tasmanian devil LastZ results

Human (Homo sapiens, GRCh38) and Tasmanian devil (Sarcophilus harrisii, mSarHar1.11) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 111. 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

ParameterHumanTasmanian devil
Chunk size30,000,00010,100,000
Overlap0100,000
Group set size010,100,000
Masking options

Statistics over 552,468 alignment blocks

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

Uncovered: 2,869,369,233 out of 3,099,750,718
Covered: 230,381,485 out of 3,099,750,718

Uncovered: 4,504,818 out of 35,869,223
Matches: 24,222,530 out of 35,869,223
Mismatches: 6,762,501 out of 35,869,223
Insertions: 379,374 out of 35,869,223
Identity over aligned base-pairs: 77.2%

Tasmanian devil

Uncovered: 2,872,472,299 out of 3,086,674,442
Covered: 214,202,143 out of 3,086,674,442

Uncovered: 5,468,573 out of 33,303,076
Matches: 21,616,877 out of 33,303,076
Mismatches: 5,842,648 out of 33,303,076
Insertions: 374,978 out of 33,303,076
Identity over aligned base-pairs: 77.7%

Block size distribution

Size range All 552,468 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
1,229
7.4 kb
10 bp - 100 bp
44,667
3.1 Mb
11,790
859.8 kb
100 bp - 1 kb
454,905
177.4 Mb
126,581
52.6 Mb
1 kb - 10 kb
51,629
82.1 Mb
32,667
75.2 Mb
10 kb - 100 kb
31
867.7 kb
2,035
49.7 Mb
100 kb - 1 Mb
7
905.5 kb
241
61.2 Mb
1 Mb - 10 Mb
14
24.9 Mb