Opossum vs Common wombat LastZ results

Opossum (Monodelphis domestica, ASM229v1) and Common wombat (Vombatus ursinus, bare-nosed_wombat_genome_assembly) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 98. 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

ParameterOpossumCommon wombat
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size010,100,000
Masking options{default_soft_masking => 1}{default_soft_masking => 1}

Statistics over 2,436,640 alignment blocks

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

Uncovered: 1,742,362,204 out of 3,600,504,728
Covered: 1,858,142,524 out of 3,600,504,728

Uncovered: 3,091,091 out of 35,083,223
Matches: 28,420,441 out of 35,083,223
Mismatches: 3,387,186 out of 35,083,223
Insertions: 184,505 out of 35,083,223
Identity over aligned base-pairs: 88.8%

Common wombat

Uncovered: 1,657,030,054 out of 3,486,597,218
Covered: 1,829,567,164 out of 3,486,597,218

Uncovered: 4,570,481 out of 33,831,805
Matches: 25,943,179 out of 33,831,805
Mismatches: 3,161,303 out of 33,831,805
Insertions: 156,842 out of 33,831,805
Identity over aligned base-pairs: 88.7%

Block size distribution

Size range All 2,436,640 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
85,556
554.9 kb
10 bp - 100 bp
250,563
12.3 Mb
27,863
1.9 Mb
100 bp - 1 kb
1,421,209
648.5 Mb
107,035
35.6 Mb
1 kb - 10 kb
678,105
1.3 Gb
21,102
52.0 Mb
10 kb - 100 kb
1,204
18.4 Mb
1,739
38.6 Mb
100 kb - 1 Mb
3
381.6 kb
239
83.3 Mb
1 Mb - 10 Mb
170
616.2 Mb
10 Mb - 100 Mb
61
1.1 Gb