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Human vs Alpine marmot LastZ results

Human (Homo sapiens, GRCh38) and Alpine marmot (Marmota marmota marmota, marMar2.1) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 96. 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

ParameterHumanAlpine marmot
Chunk size30,000,00010,100,000
Overlap0100,000
Group set size10,100,000
Masking options{default_soft_masking => 1}{default_soft_masking => 1}

Statistics over 2,179,285 alignment blocks

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

Uncovered: 1,517,263,017 out of 3,099,750,718
Covered: 1,582,487,701 out of 3,099,750,718

Uncovered: 2,051,842 out of 38,571,754
Matches: 30,971,221 out of 38,571,754
Mismatches: 5,074,413 out of 38,571,754
Insertions: 474,278 out of 38,571,754
Identity over aligned base-pairs: 84.8%

Alpine marmot

Uncovered: 1,048,563,005 out of 2,510,587,379
Covered: 1,462,024,374 out of 2,510,587,379

Uncovered: 1,875,208 out of 31,034,716
Matches: 25,716,139 out of 31,034,716
Mismatches: 3,329,962 out of 31,034,716
Insertions: 113,407 out of 31,034,716
Identity over aligned base-pairs: 88.2%

Block size distribution

Size range All 2,179,285 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
70,857
474.6 kb
10 bp - 100 bp
265,189
12.6 Mb
17,173
1.2 Mb
100 bp - 1 kb
1,297,529
580.5 Mb
62,060
21.9 Mb
1 kb - 10 kb
545,024
1.1 Gb
22,191
54.6 Mb
10 kb - 100 kb
681
9.6 Mb
1,596
37.5 Mb
100 kb - 1 Mb
5
579.3 kb
165
59.9 Mb
1 Mb - 10 Mb
135
541.3 Mb
10 Mb - 100 Mb
47
941.1 Mb