Human vs Platyfish LastZ results

Human (Homo sapiens, GRCh38) and Platyfish (Xiphophorus maculatus, X_maculatus-5.0-male) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 94. 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

ParameterHumanPlatyfish
Chunk size30,000,00010,100,000
Overlap0100,000
Group set size10,100,000
Masking options

Statistics over 247,358 alignment blocks

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

Uncovered: 3,066,806,003 out of 3,099,750,718
Covered: 32,944,715 out of 3,099,750,718

Uncovered: 17,926,156 out of 38,571,754
Matches: 14,145,878 out of 38,571,754
Mismatches: 6,131,737 out of 38,571,754
Insertions: 367,983 out of 38,571,754
Identity over aligned base-pairs: 68.5%

Platyfish

Uncovered: 672,849,364 out of 704,321,165
Covered: 31,471,801 out of 704,321,165

Uncovered: 16,545,528 out of 39,808,847
Matches: 15,967,047 out of 39,808,847
Mismatches: 6,858,968 out of 39,808,847
Insertions: 437,304 out of 39,808,847
Identity over aligned base-pairs: 68.6%

Block size distribution

Size range All 247,358 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
1,467
6.5 kb
10 bp - 100 bp
50,095
3.8 Mb
14,887
1.1 Mb
100 bp - 1 kb
194,235
38.6 Mb
80,129
24.2 Mb
1 kb - 10 kb
1,554
2.4 Mb
9,415
18.3 Mb
10 kb - 100 kb
6
134.6 kb
70
996.4 kb
100 kb - 1 Mb
1
100.2 kb
3
383.5 kb