Opossum vs Opossum LastZ results

Opossum (Monodelphis domestica, ASM229v1) and Opossum (Monodelphis domestica, ASM229v1) were aligned using the LastZ alignment algorithm (LastZ) in Ensembl release 100. Opossum 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

ParameterOpossum (reference)Opossum (non-reference)
Chunk size10,000,00010,100,000
Overlap0100,000
Group set size010,100,000
Masking options

Statistics over 439,532 alignment blocks

Genome coverage (bp) Coding exon coverage (bp)
Opossum

Uncovered: 1,713,277,346 out of 1,858,552,590
Covered: 145,275,244 out of 1,858,552,590

Uncovered: 4,831,526 out of 31,202,085
Matches: 19,907,456 out of 31,202,085
Mismatches: 6,111,166 out of 31,202,085
Insertions: 351,937 out of 31,202,085
Identity over aligned base-pairs: 75.5%