Opossum vs Tasmanian devil LastZ results

Opossum (Monodelphis domestica, ASM229v1) and Tasmanian devil (Sarcophilus harrisii, mSarHar1.11) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 102. Opossum 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

ParameterOpossumTasmanian devil
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size10,100,00010,100,000
Masking options

Statistics over 2,230,276 alignment blocks

Genome coverage (bp) Coding exon coverage (bp)
Opossum

Uncovered: 1,996,159,314 out of 3,600,504,728
Covered: 1,604,345,414 out of 3,600,504,728

Uncovered: 3,426,378 out of 35,083,223
Matches: 27,688,730 out of 35,083,223
Mismatches: 3,704,596 out of 35,083,223
Insertions: 263,519 out of 35,083,223
Identity over aligned base-pairs: 87.5%

Tasmanian devil

Uncovered: 1,540,334,646 out of 3,086,657,325
Covered: 1,546,322,679 out of 3,086,657,325

Uncovered: 2,552,288 out of 33,291,752
Matches: 26,747,351 out of 33,291,752
Mismatches: 3,794,047 out of 33,291,752
Insertions: 198,066 out of 33,291,752
Identity over aligned base-pairs: 87.0%

Block size distribution

Size range All 2,230,276 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
67,264
444.8 kb
10 bp - 100 bp
232,005
11.4 Mb
21,690
1.5 Mb
100 bp - 1 kb
1,349,937
622.5 Mb
91,164
30.8 Mb
1 kb - 10 kb
580,291
1.1 Gb
16,583
37.7 Mb
10 kb - 100 kb
775
11.5 Mb
779
17.8 Mb
100 kb - 1 Mb
4
507.7 kb
111
37.7 Mb
1 Mb - 10 Mb
50
181.1 Mb
10 Mb - 100 Mb
20
694.7 Mb
100 Mb - 1 Gb
5
707.3 Mb