Human vs Narwhal LastZ results

Human (Homo sapiens, GRCh38) and Narwhal (Monodon monoceros, NGI_Narwhal_1) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 101. 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

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

Statistics over 2,163,715 alignment blocks

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

Uncovered: 1,510,955,383 out of 3,096,649,726
Covered: 1,585,694,343 out of 3,096,649,726

Uncovered: 985,397 out of 35,634,800
Matches: 30,121,339 out of 35,634,800
Mismatches: 4,235,575 out of 35,634,800
Insertions: 292,489 out of 35,634,800
Identity over aligned base-pairs: 86.9%

Narwhal

Uncovered: 816,753,243 out of 2,355,574,979
Covered: 1,538,821,736 out of 2,355,574,979

Uncovered: 239,676 out of 31,508,919
Matches: 27,739,926 out of 31,508,919
Mismatches: 3,397,897 out of 31,508,919
Insertions: 131,420 out of 31,508,919
Identity over aligned base-pairs: 88.7%

Block size distribution

Size range All 2,163,715 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
71,860
482.5 kb
10 bp - 100 bp
280,463
13.8 Mb
34,899
2.4 Mb
100 bp - 1 kb
1,240,282
553.5 Mb
114,350
42.2 Mb
1 kb - 10 kb
569,957
1.1 Gb
33,530
80.6 Mb
10 kb - 100 kb
1,148
16.8 Mb
2,092
48.8 Mb
100 kb - 1 Mb
5
600.5 kb
149
43.6 Mb
1 Mb - 10 Mb
60
221.4 Mb
10 Mb - 100 Mb
37
1.2 Gb
100 Mb - 1 Gb
1
102.1 Mb