Zebrafish vs Huchen LastZ results

Zebrafish (Danio rerio, GRCz11) and Huchen (Hucho hucho, ASM331708v1) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 97. 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

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

Statistics over 604,216 alignment blocks

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

Uncovered: 1,272,814,433 out of 1,373,471,384
Covered: 100,656,951 out of 1,373,471,384

Uncovered: 6,759,952 out of 42,031,845
Matches: 24,957,076 out of 42,031,845
Mismatches: 9,813,954 out of 42,031,845
Insertions: 500,863 out of 42,031,845
Identity over aligned base-pairs: 70.8%

Huchen

Uncovered: 2,346,525,156 out of 2,487,549,814
Covered: 141,024,658 out of 2,487,549,814

Uncovered: 15,893,400 out of 70,924,295
Matches: 39,822,969 out of 70,924,295
Mismatches: 13,826,628 out of 70,924,295
Insertions: 1,381,298 out of 70,924,295
Identity over aligned base-pairs: 72.4%

Block size distribution

Size range All 604,216 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
4,338
20.2 kb
10 bp - 100 bp
88,660
6.3 Mb
28,646
2.1 Mb
100 bp - 1 kb
492,971
125.8 Mb
160,457
50.4 Mb
1 kb - 10 kb
17,761
42.3 Mb
31,548
87.4 Mb
10 kb - 100 kb
486
5.8 Mb
2,100
37.2 Mb
100 kb - 1 Mb
23
3.1 Mb