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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
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 size10,100,000
Masking options

Statistics over 246,542 alignment blocks

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

Uncovered: 3,064,011,114 out of 3,099,750,718
Covered: 35,739,604 out of 3,099,750,718

Uncovered: 17,855,857 out of 38,571,754
Matches: 14,067,063 out of 38,571,754
Mismatches: 6,278,252 out of 38,571,754
Insertions: 370,582 out of 38,571,754
Identity over aligned base-pairs: 67.9%

Guppy

Uncovered: 699,010,057 out of 731,622,281
Covered: 32,612,224 out of 731,622,281

Uncovered: 14,089,134 out of 36,750,983
Matches: 15,517,259 out of 36,750,983
Mismatches: 6,714,319 out of 36,750,983
Insertions: 430,271 out of 36,750,983
Identity over aligned base-pairs: 68.5%

Block size distribution

Size range All 246,542 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
1,491
6.4 kb
10 bp - 100 bp
49,403
3.7 Mb
15,028
1.1 Mb
100 bp - 1 kb
192,910
38.7 Mb
80,930
24.5 Mb
1 kb - 10 kb
2,686
5.1 Mb
10,112
20.3 Mb
10 kb - 100 kb
49
768.8 kb
137
2.1 Mb
100 kb - 1 Mb
3
350.1 kb
4
627.7 kb