Zebrafish vs Platyfish LastZ results

Zebrafish (Danio rerio, GRCz11) and Platyfish (Xiphophorus maculatus, X_maculatus-5.0-male) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 94. Zebrafish 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

ParameterZebrafishPlatyfish
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size010,100,000
Masking options

Statistics over 281,282 alignment blocks

Genome coverage (bp) Coding exon coverage (bp)
Zebrafish

Uncovered: 1,318,482,460 out of 1,373,471,384
Covered: 54,988,924 out of 1,373,471,384

Uncovered: 10,590,416 out of 42,031,845
Matches: 22,354,395 out of 42,031,845
Mismatches: 8,616,642 out of 42,031,845
Insertions: 470,392 out of 42,031,845
Identity over aligned base-pairs: 71.1%

Platyfish

Uncovered: 650,970,745 out of 704,321,165
Covered: 53,350,420 out of 704,321,165

Uncovered: 9,623,447 out of 39,808,847
Matches: 21,411,988 out of 39,808,847
Mismatches: 8,144,919 out of 39,808,847
Insertions: 628,493 out of 39,808,847
Identity over aligned base-pairs: 70.9%

Block size distribution

Size range All 281,282 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
1,816
8.0 kb
10 bp - 100 bp
42,378
3.1 Mb
13,137
976.2 kb
100 bp - 1 kb
232,772
56.5 Mb
69,627
21.3 Mb
1 kb - 10 kb
4,309
6.8 Mb
13,184
32.3 Mb
10 kb - 100 kb
7
138.6 kb
562
10.7 Mb
100 kb - 1 Mb
8
1.2 Mb