Chicken vs Coelacanth LastZ results

Chicken (Gallus gallus, bGalGal1.mat.broiler.GRCg7b) and Coelacanth (Latimeria chalumnae, LatCha1) 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

ParameterChickenCoelacanth
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size10,100,00010,100,000
Masking options

Statistics over 168,221 alignment blocks

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

Uncovered: 1,011,664,942 out of 1,053,332,251
Covered: 41,667,309 out of 1,053,332,251

Uncovered: 9,471,916 out of 31,304,036
Matches: 15,772,263 out of 31,304,036
Mismatches: 5,853,307 out of 31,304,036
Insertions: 206,550 out of 31,304,036
Identity over aligned base-pairs: 72.2%

Coelacanth

Uncovered: 2,820,685,921 out of 2,860,591,921
Covered: 39,906,000 out of 2,860,591,921

Uncovered: 12,261,693 out of 30,870,617
Matches: 13,477,719 out of 30,870,617
Mismatches: 4,916,576 out of 30,870,617
Insertions: 214,629 out of 30,870,617
Identity over aligned base-pairs: 72.4%

Block size distribution

Size range All 168,221 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
640
2.6 kb
10 bp - 100 bp
17,967
1.4 Mb
7,908
616.5 kb
100 bp - 1 kb
146,210
36.0 Mb
68,479
20.6 Mb
1 kb - 10 kb
3,382
5.4 Mb
7,611
17.0 Mb
10 kb - 100 kb
22
364.7 kb
253
4.6 Mb
100 kb - 1 Mb
2
287.4 kb