Zebrafish vs Elephant shark LastZ results

Zebrafish (Danio rerio, GRCz11) and Elephant shark (Callorhinchus milii, Callorhinchus_milii-6.1.3) 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

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

Statistics over 199,933 alignment blocks

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

Uncovered: 1,338,964,672 out of 1,373,471,384
Covered: 34,506,712 out of 1,373,471,384

Uncovered: 17,349,672 out of 42,031,845
Matches: 16,768,838 out of 42,031,845
Mismatches: 7,529,291 out of 42,031,845
Insertions: 384,044 out of 42,031,845
Identity over aligned base-pairs: 67.9%

Elephant shark

Uncovered: 947,229,692 out of 974,498,586
Covered: 27,268,894 out of 974,498,586

Uncovered: 11,778,066 out of 30,661,569
Matches: 12,868,868 out of 30,661,569
Mismatches: 5,699,219 out of 30,661,569
Insertions: 315,416 out of 30,661,569
Identity over aligned base-pairs: 68.1%

Block size distribution

Size range All 199,933 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
1,134
4.6 kb
10 bp - 100 bp
32,299
2.5 Mb
13,082
1.0 Mb
100 bp - 1 kb
164,287
34.1 Mb
74,809
21.1 Mb
1 kb - 10 kb
2,189
3.4 Mb
8,168
16.4 Mb
10 kb - 100 kb
24
450.9 kb
105
1.7 Mb
100 kb - 1 Mb
2
220.9 kb