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Human vs Huchen LastZ results

Human (Homo sapiens, GRCh38) and Huchen (Hucho hucho, ASM331708v1) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 97. 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

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

Statistics over 405,099 alignment blocks

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

Uncovered: 3,056,071,049 out of 3,099,750,718
Covered: 43,679,669 out of 3,099,750,718

Uncovered: 16,273,214 out of 38,571,754
Matches: 15,042,936 out of 38,571,754
Mismatches: 6,832,152 out of 38,571,754
Insertions: 423,452 out of 38,571,754
Identity over aligned base-pairs: 67.5%

Huchen

Uncovered: 2,421,404,163 out of 2,487,549,814
Covered: 66,145,651 out of 2,487,549,814

Uncovered: 28,942,867 out of 70,924,295
Matches: 29,003,327 out of 70,924,295
Mismatches: 12,095,799 out of 70,924,295
Insertions: 882,302 out of 70,924,295
Identity over aligned base-pairs: 69.1%

Block size distribution

Size range All 405,099 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
2,869
12.9 kb
10 bp - 100 bp
78,414
5.9 Mb
26,380
2.0 Mb
100 bp - 1 kb
318,692
65.3 Mb
142,450
42.3 Mb
1 kb - 10 kb
4,992
11.3 Mb
16,286
34.9 Mb
10 kb - 100 kb
131
1.5 Mb
312
4.4 Mb
100 kb - 1 Mb
1
139.0 kb
4
477.4 kb