Human vs Cat LastZ results

Human (Homo sapiens, GRCh38) and Cat (Felis catus, Felis_catus_9.0) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 93. 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

ParameterHumanCat
Chunk size30,000,00010,100,000
Overlap0100,000
Group set size010,100,000
Masking options{default_soft_masking => 1}{default_soft_masking => 1}

Statistics over 2,398,632 alignment blocks

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

Uncovered: 1,479,370,375 out of 3,096,649,726
Covered: 1,617,279,351 out of 3,096,649,726

Uncovered: 593,246 out of 35,522,272
Matches: 30,458,710 out of 35,522,272
Mismatches: 4,205,205 out of 35,522,272
Insertions: 265,111 out of 35,522,272
Identity over aligned base-pairs: 87.2%

Cat

Uncovered: 999,153,084 out of 2,521,863,845
Covered: 1,522,710,761 out of 2,521,863,845

Uncovered: 854,023 out of 31,563,304
Matches: 27,164,494 out of 31,563,304
Mismatches: 3,422,803 out of 31,563,304
Insertions: 121,984 out of 31,563,304
Identity over aligned base-pairs: 88.5%

Block size distribution

Size range All 2,398,632 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
92,193
612.9 kb
10 bp - 100 bp
299,895
14.3 Mb
20,417
1.4 Mb
100 bp - 1 kb
1,430,471
642.2 Mb
63,257
22.6 Mb
1 kb - 10 kb
575,054
1.1 Gb
20,285
51.9 Mb
10 kb - 100 kb
1,001
15.2 Mb
2,105
56.1 Mb
100 kb - 1 Mb
18
2.3 Mb
259
64.4 Mb
1 Mb - 10 Mb
54
189.0 Mb
10 Mb - 100 Mb
40
1.4 Gb