Lamprey vs C.intestinalis LastZ results

Lamprey (Petromyzon marinus, Pmarinus_7.0) and C.intestinalis (Ciona intestinalis, KH) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 82. Lamprey 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

ParameterLampreyC.intestinalis
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size010,100,000
Masking options{default_soft_masking => 1}{default_soft_masking => 1}

Statistics over 22,838 alignment blocks

Genome coverage (bp) Coding exon coverage (bp)
Lamprey

Uncovered: 882,568,693 out of 885,550,958
Covered: 2,982,265 out of 885,550,958

Uncovered: 10,266,067 out of 12,541,363
Matches: 1,498,297 out of 12,541,363
Mismatches: 762,254 out of 12,541,363
Insertions: 14,745 out of 12,541,363
Identity over aligned base-pairs: 65.9%

C.intestinalis

Uncovered: 112,941,232 out of 115,227,500
Covered: 2,286,268 out of 115,227,500

Uncovered: 14,310,062 out of 16,116,563
Matches: 1,184,535 out of 16,116,563
Mismatches: 607,294 out of 16,116,563
Insertions: 14,672 out of 16,116,563
Identity over aligned base-pairs: 65.6%

Block size distribution

Size range All 22,838 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
42
202.0 bp
10 bp - 100 bp
7,263
555.8 kb
2,746
209.5 kb
100 bp - 1 kb
15,516
2.4 Mb
8,512
2.2 Mb
1 kb - 10 kb
17
28.3 kb
355
605.0 kb
10 kb - 100 kb
1
34.3 kb