Human vs Kakapo LastZ results

Human (Homo sapiens, GRCh38) and Kakapo (Strigops habroptila, bStrHab1_v1.p) 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

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

Statistics over 311,829 alignment blocks

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

Uncovered: 3,013,460,086 out of 3,099,750,718
Covered: 86,290,632 out of 3,099,750,718

Uncovered: 11,500,447 out of 38,571,754
Matches: 19,981,566 out of 38,571,754
Mismatches: 6,667,053 out of 38,571,754
Insertions: 422,688 out of 38,571,754
Identity over aligned base-pairs: 73.8%

Kakapo

Uncovered: 1,093,378,579 out of 1,165,621,973
Covered: 72,243,394 out of 1,165,621,973

Uncovered: 4,581,370 out of 26,948,573
Matches: 16,731,109 out of 26,948,573
Mismatches: 5,353,245 out of 26,948,573
Insertions: 282,849 out of 26,948,573
Identity over aligned base-pairs: 74.8%

Block size distribution

Size range All 311,829 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
623
3.3 kb
10 bp - 100 bp
39,782
3.0 Mb
10,453
777.7 kb
100 bp - 1 kb
260,863
73.5 Mb
91,468
32.2 Mb
1 kb - 10 kb
10,548
16.3 Mb
15,603
36.5 Mb
10 kb - 100 kb
12
256.8 kb
772
17.4 Mb
100 kb - 1 Mb
1
100.2 kb
36
6.3 Mb