Human vs Rabbit LastZ results

Human (Homo sapiens, GRCh38) and Rabbit (Oryctolagus cuniculus, OryCun2.0) 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

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

Statistics over 2,046,023 alignment blocks

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

Uncovered: 1,776,448,884 out of 3,099,750,718
Covered: 1,323,301,834 out of 3,099,750,718

Uncovered: 3,700,843 out of 38,571,754
Matches: 29,468,666 out of 38,571,754
Mismatches: 4,850,237 out of 38,571,754
Insertions: 552,008 out of 38,571,754
Identity over aligned base-pairs: 84.5%

Rabbit

Uncovered: 1,519,004,956 out of 2,737,490,501
Covered: 1,218,485,545 out of 2,737,490,501

Uncovered: 4,238,147 out of 34,042,187
Matches: 25,795,498 out of 34,042,187
Mismatches: 3,826,319 out of 34,042,187
Insertions: 182,223 out of 34,042,187
Identity over aligned base-pairs: 86.6%

Block size distribution

Size range All 2,046,023 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
29,524
200.1 kb
10 bp - 100 bp
217,264
12.1 Mb
16,611
1.1 Mb
100 bp - 1 kb
1,349,840
594.5 Mb
59,413
21.6 Mb
1 kb - 10 kb
449,004
802.1 Mb
18,465
46.4 Mb
10 kb - 100 kb
390
5.0 Mb
1,927
51.1 Mb
100 kb - 1 Mb
1
137.5 kb
394
109.5 Mb
1 Mb - 10 Mb
97
275.2 Mb
10 Mb - 100 Mb
32
909.1 Mb