Human vs Golden Hamster LastZ results

Human (Homo sapiens, GRCh38) and Golden Hamster (Mesocricetus auratus, MesAur1.0) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 90. 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
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

ParameterHumanGolden Hamster
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size10,100,000
Masking options{default_soft_masking => 1}{default_soft_masking => 1}

Statistics over 1,458,823 alignment blocks

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

Uncovered: 2,135,502,948 out of 3,099,750,718
Covered: 964,247,770 out of 3,099,750,718

Uncovered: 3,800,728 out of 38,571,754
Matches: 28,453,726 out of 38,571,754
Mismatches: 5,716,232 out of 38,571,754
Insertions: 601,068 out of 38,571,754
Identity over aligned base-pairs: 81.8%

Golden Hamster

Uncovered: 1,634,584,393 out of 2,504,925,039
Covered: 870,340,646 out of 2,504,925,039

Uncovered: 1,276,725 out of 28,004,075
Matches: 22,673,394 out of 28,004,075
Mismatches: 3,930,010 out of 28,004,075
Insertions: 123,946 out of 28,004,075
Identity over aligned base-pairs: 84.8%

Block size distribution

Size range All 1,458,823 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
21,951
148.6 kb
10 bp - 100 bp
143,525
7.7 Mb
11,311
785.4 kb
100 bp - 1 kb
970,227
446.7 Mb
49,632
18.9 Mb
1 kb - 10 kb
322,917
555.5 Mb
16,958
40.4 Mb
10 kb - 100 kb
203
2.5 Mb
1,061
23.6 Mb
100 kb - 1 Mb
279
115.6 Mb
1 Mb - 10 Mb
240
716.2 Mb
10 Mb - 100 Mb
8
97.0 Mb