Upcoming Ensembl Platform Transition

This is the final release of its kind on this website.

In summer 2026, this site will bring you to the new Ensembl platform currently at beta.ensembl.org.
Please bookmark this archive to retain access to the current site, tools and functionality until they are available on the new platform -> jun2026.archive.ensembl.org

Human vs Mouse Lemur LastZ results

Human (Homo sapiens, GRCh38) and Mouse Lemur (Microcebus murinus, Mmur_3.0) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 91. 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
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

ParameterHumanMouse Lemur
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 2,223,849 alignment blocks

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

Uncovered: 1,325,078,141 out of 3,099,750,718
Covered: 1,774,672,577 out of 3,099,750,718

Uncovered: 1,235,065 out of 38,571,754
Matches: 32,996,729 out of 38,571,754
Mismatches: 3,964,510 out of 38,571,754
Insertions: 375,450 out of 38,571,754
Identity over aligned base-pairs: 88.4%

Mouse Lemur

Uncovered: 829,559,044 out of 2,487,409,138
Covered: 1,657,850,094 out of 2,487,409,138

Uncovered: 1,248,793 out of 32,222,963
Matches: 28,024,450 out of 32,222,963
Mismatches: 2,832,139 out of 32,222,963
Insertions: 117,581 out of 32,222,963
Identity over aligned base-pairs: 90.5%

Block size distribution

Size range All 2,223,849 alignment blocks Blocks grouped in nets
# blocks Total size (incl. gaps) # nets Total size (incl. gaps)
1 bp - 10 bp
78,572
528.2 kb
10 bp - 100 bp
323,250
15.5 Mb
34,464
2.3 Mb
100 bp - 1 kb
1,220,295
526.7 Mb
125,265
41.7 Mb
1 kb - 10 kb
599,655
1.3 Gb
23,792
56.3 Mb
10 kb - 100 kb
2,076
26.8 Mb
2,086
55.4 Mb
100 kb - 1 Mb
1
140.0 kb
277
78.5 Mb
1 Mb - 10 Mb
119
438.4 Mb
10 Mb - 100 Mb
49
1.2 Gb