Chicken vs Australian saltwater crocodile LastZ results

Chicken (Gallus gallus, bGalGal1.mat.broiler.GRCg7b) and Australian saltwater crocodile (Crocodylus porosus, CroPor_comp1) 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

ParameterChickenAustralian saltwater crocodile
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size10,100,00010,100,000
Masking options

Statistics over 494,092 alignment blocks

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

Uncovered: 755,081,547 out of 1,053,332,251
Covered: 298,250,704 out of 1,053,332,251

Uncovered: 5,712,144 out of 31,304,036
Matches: 20,495,185 out of 31,304,036
Mismatches: 4,907,815 out of 31,304,036
Insertions: 188,892 out of 31,304,036
Identity over aligned base-pairs: 80.1%

Australian saltwater crocodile

Uncovered: 1,746,346,729 out of 2,049,536,252
Covered: 303,189,523 out of 2,049,536,252

Uncovered: 3,333,715 out of 26,208,359
Matches: 18,542,194 out of 26,208,359
Mismatches: 4,096,055 out of 26,208,359
Insertions: 236,395 out of 26,208,359
Identity over aligned base-pairs: 81.1%

Block size distribution

Size range All 494,092 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
1,117
7.6 kb
10 bp - 100 bp
25,213
1.6 Mb
2,081
151.4 kb
100 bp - 1 kb
375,496
172.5 Mb
12,319
4.5 Mb
1 kb - 10 kb
92,225
148.1 Mb
2,816
6.6 Mb
10 kb - 100 kb
41
834.4 kb
281
7.9 Mb
100 kb - 1 Mb
103
36.0 Mb
1 Mb - 10 Mb
44
153.5 Mb
10 Mb - 100 Mb
6
114.4 Mb