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Human vs Hedgehog LastZ results

Human (Homo sapiens, GRCh38) and Hedgehog (Erinaceus europaeus, HEDGEHOG) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 76. 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

ParameterHumanHedgehog
Chunk size30,000,00010,100,000
Overlap0100,000
Group set size10,100,000
Masking options{default_soft_masking => 1}

Statistics over 1,185,065 alignment blocks

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

Uncovered: 2,507,488,427 out of 3,099,750,718
Covered: 592,262,291 out of 3,099,750,718

Uncovered: 9,262,298 out of 38,571,754
Matches: 23,802,145 out of 38,571,754
Mismatches: 5,055,773 out of 38,571,754
Insertions: 451,538 out of 38,571,754
Identity over aligned base-pairs: 81.2%

Hedgehog

Uncovered: 2,833,280,898 out of 3,377,541,562
Covered: 544,260,664 out of 3,377,541,562

Uncovered: 4,341,445 out of 23,719,458
Matches: 16,494,942 out of 23,719,458
Mismatches: 2,826,994 out of 23,719,458
Insertions: 56,077 out of 23,719,458
Identity over aligned base-pairs: 85.1%

Block size distribution

Size range All 1,185,065 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
13,741
89.1 kb
10 bp - 100 bp
113,371
6.9 Mb
17,060
1.2 Mb
100 bp - 1 kb
904,230
388.9 Mb
150,716
68.6 Mb
1 kb - 10 kb
153,706
228.5 Mb
103,112
285.3 Mb
10 kb - 100 kb
17
188.2 kb
10,563
242.6 Mb
100 kb - 1 Mb
193
26.9 Mb