Human vs Zebrafish LastZ results

Human (Homo sapiens, GRCh38) and Zebrafish (Danio rerio, GRCz11) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 92. Human 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

ParameterHumanZebrafish
Chunk size30,000,00010,000,000
Overlap00
Group set size00
Masking options

Statistics over 264,968 alignment blocks

Genome coverage (bp) Coding exon coverage (bp)
Human

Uncovered: 3,062,809,131 out of 3,096,649,726
Covered: 33,840,595 out of 3,096,649,726

Uncovered: 14,820,889 out of 35,619,351
Matches: 14,206,748 out of 35,619,351
Mismatches: 6,224,533 out of 35,619,351
Insertions: 367,181 out of 35,619,351
Identity over aligned base-pairs: 68.3%

Zebrafish

Uncovered: 1,339,167,979 out of 1,373,471,384
Covered: 34,303,405 out of 1,373,471,384

Uncovered: 17,049,894 out of 42,031,845
Matches: 17,081,204 out of 42,031,845
Mismatches: 7,506,581 out of 42,031,845
Insertions: 394,166 out of 42,031,845
Identity over aligned base-pairs: 68.4%

Block size distribution

Size range All 264,968 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
1,486
6.3 kb
10 bp - 100 bp
52,683
4.0 Mb
20,137
1.5 Mb
100 bp - 1 kb
208,829
41.9 Mb
106,779
30.3 Mb
1 kb - 10 kb
1,960
3.1 Mb
8,521
15.9 Mb
10 kb - 100 kb
8
253.6 kb
67
1.1 Mb
100 kb - 1 Mb
2
239.6 kb
5
651.3 kb