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
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

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

Statistics over 428,918 alignment blocks

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

Uncovered: 3,052,970,057 out of 3,096,649,726
Covered: 43,679,669 out of 3,096,649,726

Uncovered: 13,560,577 out of 35,619,351
Matches: 14,900,565 out of 35,619,351
Mismatches: 6,748,979 out of 35,619,351
Insertions: 409,230 out of 35,619,351
Identity over aligned base-pairs: 67.5%

Huchen

Uncovered: 2,419,941,694 out of 2,487,549,814
Covered: 67,608,120 out of 2,487,549,814

Uncovered: 28,270,815 out of 70,924,295
Matches: 29,450,974 out of 70,924,295
Mismatches: 12,306,655 out of 70,924,295
Insertions: 895,851 out of 70,924,295
Identity over aligned base-pairs: 69.0%

Block size distribution

Size range All 428,918 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
3,037
13.7 kb
10 bp - 100 bp
83,591
6.2 Mb
27,842
2.1 Mb
100 bp - 1 kb
336,821
69.0 Mb
149,893
44.7 Mb
1 kb - 10 kb
5,316
12.3 Mb
17,364
37.5 Mb
10 kb - 100 kb
151
1.9 Mb
335
4.9 Mb
100 kb - 1 Mb
2
256.5 kb
5
594.9 kb