Human vs Shrew mouse LastZ results

Human (Homo sapiens, GRCh38) and Shrew mouse (Mus pahari, PAHARI_EIJ_v1.1) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 90. 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
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

ParameterHumanShrew mouse
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 1,533,176 alignment blocks

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

Uncovered: 2,107,572,806 out of 3,099,750,718
Covered: 992,177,912 out of 3,099,750,718

Uncovered: 2,718,499 out of 38,571,754
Matches: 29,293,012 out of 38,571,754
Mismatches: 5,953,861 out of 38,571,754
Insertions: 606,382 out of 38,571,754
Identity over aligned base-pairs: 81.7%

Shrew mouse

Uncovered: 1,570,306,942 out of 2,475,012,951
Covered: 904,706,009 out of 2,475,012,951

Uncovered: 1,432,738 out of 32,578,444
Matches: 26,185,877 out of 32,578,444
Mismatches: 4,798,119 out of 32,578,444
Insertions: 161,710 out of 32,578,444
Identity over aligned base-pairs: 84.1%

Block size distribution

Size range All 1,533,176 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
20,930
141.9 kb
10 bp - 100 bp
147,217
8.0 Mb
11,528
782.8 kb
100 bp - 1 kb
1,021,095
472.7 Mb
44,278
16.3 Mb
1 kb - 10 kb
343,709
588.3 Mb
15,417
36.8 Mb
10 kb - 100 kb
224
3.2 Mb
1,163
28.9 Mb
100 kb - 1 Mb
1
139.5 kb
223
72.4 Mb
1 Mb - 10 Mb
128
452.7 Mb
10 Mb - 100 Mb
27
464.6 Mb