Human vs Guppy LastZ results

Human (Homo sapiens, GRCh38) and Guppy (Poecilia reticulata, Guppy_female_1.0_MT) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 94. 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

ParameterHumanGuppy
Chunk size30,000,00010,100,000
Overlap0100,000
Group set size010,100,000
Masking options

Statistics over 256,778 alignment blocks

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

Uncovered: 3,060,910,122 out of 3,096,649,726
Covered: 35,739,604 out of 3,096,649,726

Uncovered: 15,088,850 out of 35,619,351
Matches: 13,952,058 out of 35,619,351
Mismatches: 6,219,746 out of 35,619,351
Insertions: 358,697 out of 35,619,351
Identity over aligned base-pairs: 68.0%

Guppy

Uncovered: 698,623,425 out of 731,622,281
Covered: 32,998,856 out of 731,622,281

Uncovered: 13,891,637 out of 36,750,983
Matches: 15,636,837 out of 36,750,983
Mismatches: 6,788,604 out of 36,750,983
Insertions: 433,905 out of 36,750,983
Identity over aligned base-pairs: 68.4%

Block size distribution

Size range All 256,778 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
1,535
6.6 kb
10 bp - 100 bp
51,934
3.9 Mb
15,655
1.2 Mb
100 bp - 1 kb
200,551
40.2 Mb
84,008
25.4 Mb
1 kb - 10 kb
2,701
5.2 Mb
10,490
21.1 Mb
10 kb - 100 kb
53
867.5 kb
141
2.2 Mb
100 kb - 1 Mb
4
479.9 kb
5
830.9 kb