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Human vs Fugu LastZ results

Human (Homo sapiens, GRCh38) and Fugu (Takifugu rubripes, fTakRub1.2) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 99. 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

ParameterHumanFugu
Chunk size30,000,00010,100,000
Overlap0100,000
Group set size10,100,000
Masking options

Statistics over 256,992 alignment blocks

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

Uncovered: 3,064,952,947 out of 3,099,750,718
Covered: 34,797,771 out of 3,099,750,718

Uncovered: 18,001,085 out of 38,571,754
Matches: 14,067,084 out of 38,571,754
Mismatches: 6,127,080 out of 38,571,754
Insertions: 376,505 out of 38,571,754
Identity over aligned base-pairs: 68.4%

Fugu

Uncovered: 351,091,663 out of 384,110,215
Covered: 33,018,552 out of 384,110,215

Uncovered: 15,116,700 out of 37,455,454
Matches: 15,281,712 out of 37,455,454
Mismatches: 6,602,134 out of 37,455,454
Insertions: 454,908 out of 37,455,454
Identity over aligned base-pairs: 68.4%

Block size distribution

Size range All 256,992 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
1,812
8.4 kb
10 bp - 100 bp
53,635
4.0 Mb
14,967
1.1 Mb
100 bp - 1 kb
199,800
40.4 Mb
75,005
23.2 Mb
1 kb - 10 kb
1,721
2.6 Mb
10,652
21.3 Mb
10 kb - 100 kb
17
903.2 kb
102
2.1 Mb
100 kb - 1 Mb
7
877.4 kb
9
1.1 Mb