Chicken vs African ostrich LastZ results

Chicken (Gallus gallus, bGalGal1.mat.broiler.GRCg7b) and African ostrich (Struthio camelus australis, ASM69896v1) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 107. Chicken 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

ParameterChickenAfrican ostrich
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size10,100,00010,100,000
Masking options

Statistics over 772,977 alignment blocks

Genome coverage (bp) Coding exon coverage (bp)
Chicken

Uncovered: 235,308,711 out of 1,053,332,251
Covered: 818,023,540 out of 1,053,332,251

Uncovered: 4,167,818 out of 31,304,036
Matches: 22,542,104 out of 31,304,036
Mismatches: 4,463,716 out of 31,304,036
Insertions: 130,398 out of 31,304,036
Identity over aligned base-pairs: 83.1%

African ostrich

Uncovered: 381,906,766 out of 1,225,041,896
Covered: 843,135,130 out of 1,225,041,896

Uncovered: 1,502,526 out of 24,733,708
Matches: 20,268,328 out of 24,733,708
Mismatches: 2,748,091 out of 24,733,708
Insertions: 214,763 out of 24,733,708
Identity over aligned base-pairs: 87.2%

Block size distribution

Size range All 772,977 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
19,916
134.1 kb
10 bp - 100 bp
68,325
3.1 Mb
1,467
104.4 kb
100 bp - 1 kb
384,727
187.2 Mb
6,936
2.4 Mb
1 kb - 10 kb
298,901
678.9 Mb
2,040
5.5 Mb
10 kb - 100 kb
1,108
13.4 Mb
445
15.9 Mb
100 kb - 1 Mb
474
185.7 Mb
1 Mb - 10 Mb
256
658.1 Mb
10 Mb - 100 Mb
1
15.1 Mb