Arctica islandica
Ocean quahog clam
GC content
30.72%
Whole genome
Non-coding
3,006 bp
Including the D-loop
Where Ocean quahog clam sits among 2,335 species
Whole-genome GC content against maximum lifespan. Ocean quahog clam has the 1st longest lifespan of them.
- This species
- All other species
Base composition
Whole genome18,289 bp
- GC skew (G − C) / (G + C)
- +0.295
- AT skew (A − T) / (A + T)
- −0.164
Life history
- Maximum lifespan
- 507 years
- Female sexual maturity
- 12.5 years
- Male sexual maturity
- 13.1 years
Lifespan from AnAge · AnAge record · other traits from AnAge Build 15 (HAGRID 04631)
About this record
- Lifespan source
- AnAge build 15
- Based on
- an animal in the wild
- Data quality
- acceptable, medium sample
- Licence
- Free to use, subject to the Human Ageing Genomic Resources conditions of use
- Status
- Updated in build 2
- In the database since
- build 1 (2015-07-01)
- Last changed
- build 2 (2026-11-13)
Every change against the 2015 build is in the changelog download.
Composition by region
Reference (L) strand as deposited in RefSeqWhole genome18,289 bp
Protein-coding11,746 bp
12S rRNA863 bp
16S rRNA1,272 bp
All tRNA1,416 bp
Genes and regions
Select a column to sort; select a gene to compare it across species| Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| ND1NADH dehydrogenase subunit 1 | 912 bp | 32.35% | +0.302 | −0.293 | |||||
| ND2NADH dehydrogenase subunit 2 | 1,023 bp | 28.94% | +0.419 | −0.213 | |||||
| COX1Cytochrome c oxidase subunit I | 1,671 bp | 34.41% | +0.200 | −0.223 | |||||
| COX2Cytochrome c oxidase subunit II | 1,023 bp | 31.09% | +0.384 | −0.084 | |||||
| ATP6ATP synthase F0 subunit 6 | 744 bp | 31.86% | +0.350 | −0.278 | |||||
| COX3Cytochrome c oxidase subunit III | 930 bp | 33.55% | +0.308 | −0.282 | |||||
| ND3NADH dehydrogenase subunit 3 | 411 bp | 28.47% | +0.402 | −0.279 | |||||
| ND4LNADH dehydrogenase subunit 4L | 285 bp | 23.86% | +0.471 | −0.327 | |||||
| ND4NADH dehydrogenase subunit 4 | 1,416 bp | 31.00% | +0.289 | −0.238 | |||||
| ND5NADH dehydrogenase subunit 5 | 1,725 bp | 29.74% | +0.318 | −0.215 | |||||
| ND6NADH dehydrogenase subunit 6 | 504 bp | 28.97% | +0.466 | −0.207 | |||||
| CYTBCytochrome b | 1,119 bp | 32.80% | +0.193 | −0.285 | |||||
| 12S rRNA12S ribosomal RNA | 863 bp | 34.18% | +0.254 | +0.074 | |||||
| 16S rRNA16S ribosomal RNA | 1,272 bp | 30.50% | +0.268 | +0.009 |
Codon usage
Counts per codon, darker is more frequent3,921 codons in all protein-coding genes. Grouped with the Invertebrate mitochondrial code (NCBI table 5).
Phe F10.4%
UUU365
UUC43
Leu L14.7%
UUA328
UUG97
CUU91
CUC10
CUA40
CUG11
Ile I6.0%
AUU221
AUC16
Met M6.2%
AUA178
AUG64
Val V9.4%
GUU159
GUC11
GUA138
GUG61
Ser S10.9%
UCU128
UCC9
UCA43
UCG11
AGU62
AGC9
AGA107
AGG57
Pro P3.0%
CCU74
CCC10
CCA22
CCG10
Thr T3.1%
ACU72
ACC8
ACA38
ACG5
Ala A4.4%
GCU102
GCC13
GCA44
GCG13
Tyr Y3.4%
UAU115
UAC17
His H1.8%
CAU63
CAC8
Gln Q1.4%
CAA34
CAG20
Asn N2.7%
AAU90
AAC17
Lys K2.8%
AAA85
AAG26
Asp D2.0%
GAU65
GAC14
Glu E2.9%
GAA80
GAG32
Cys C2.1%
UGU68
UGC14
Trp W2.9%
UGA68
UGG44
Arg R1.5%
CGU15
CGC5
CGA27
CGG13
Gly G8.1%
GGU99
GGC14
GGA122
GGG84
Stop 0.3%
UAA9
UAG3
Genome map
36 annotated features in NC_022709.1Hover, tap or tab to a feature to see its position, length, strand and GC content. Genes and rRNAs open their own pages.
- Protein-coding12
- rRNA2
- tRNA22
- Outer ring: + strand, arrows run clockwise. Inner ring: − strand.
- Middle ring: GC% of each gene against the whole genome (30.7%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).
All 36 features as a table
| Feature | Type | Start | End | Length | Strand | GC |
|---|---|---|---|---|---|---|
| tRNA-Glu | Transfer RNA | 8 | 80 | 73 bp | + | – |
| tRNA-Leu | Transfer RNA | 719 | 781 | 63 bp | + | – |
| tRNA-Val | Transfer RNA | 784 | 848 | 65 bp | + | – |
| tRNA-Asp | Transfer RNA | 898 | 960 | 63 bp | + | – |
| tRNA-Thr | Transfer RNA | 983 | 1,045 | 63 bp | + | – |
| 12S rRNA | Ribosomal RNA | 1,059 | 1,921 | 863 bp | + | 34.2% |
| tRNA-Cys | Transfer RNA | 1,996 | 2,058 | 63 bp | + | – |
| tRNA-Tyr | Transfer RNA | 2,058 | 2,121 | 64 bp | + | – |
| COX3 | Protein-coding gene | 2,199 | 3,128 | 930 bp | + | 33.6% |
| tRNA-Phe | Transfer RNA | 3,155 | 3,220 | 66 bp | + | – |
| COX1 | Protein-coding gene | 3,315 | 4,985 | 1,671 bp | + | 34.4% |
| tRNA-Ala | Transfer RNA | 5,028 | 5,091 | 64 bp | + | – |
| COX2 | Protein-coding gene | 5,092 | 6,114 | 1,023 bp | + | 31.1% |
| tRNA-Asn | Transfer RNA | 6,165 | 6,228 | 64 bp | + | – |
| ND5 | Protein-coding gene | 6,215 | 7,939 | 1,725 bp | + | 29.7% |
| tRNA-Met | Transfer RNA | 7,980 | 8,045 | 66 bp | + | – |
| ND2 | Protein-coding gene | 8,048 | 9,070 | 1,023 bp | + | 28.9% |
| tRNA-Gly | Transfer RNA | 9,083 | 9,146 | 64 bp | + | – |
| ND4 | Protein-coding gene | 10,455 | 11,870 | 1,416 bp | + | 31.0% |
| ND6 | Protein-coding gene | 11,854 | 12,357 | 504 bp | + | 29.0% |
| ND4L | Protein-coding gene | 12,363 | 12,647 | 285 bp | + | 23.9% |
| tRNA-Trp | Transfer RNA | 12,706 | 12,770 | 65 bp | + | – |
| tRNA-Gln | Transfer RNA | 12,779 | 12,835 | 57 bp | + | – |
| tRNA-Arg | Transfer RNA | 12,858 | 12,930 | 73 bp | + | – |
| CYTB | Protein-coding gene | 12,959 | 14,078 | 1,120 bp | + | 32.8% |
| 16S rRNA | Ribosomal RNA | 14,096 | 15,367 | 1,272 bp | + | 30.5% |
| tRNA-His | Transfer RNA | 15,369 | 15,430 | 62 bp | + | – |
| tRNA-Glu | Transfer RNA | 15,428 | 15,493 | 66 bp | + | – |
| tRNA-Ser | Transfer RNA | 15,490 | 15,552 | 63 bp | + | – |
| ATP6 | Protein-coding gene | 15,553 | 16,296 | 744 bp | + | 31.9% |
| ND3 | Protein-coding gene | 16,326 | 16,736 | 411 bp | + | 28.5% |
| tRNA-Ile | Transfer RNA | 16,740 | 16,809 | 70 bp | + | – |
| tRNA-Lys | Transfer RNA | 16,806 | 16,873 | 68 bp | + | – |
| tRNA-Leu | Transfer RNA | 16,875 | 16,938 | 64 bp | + | – |
| ND1 | Protein-coding gene | 16,939 | 17,850 | 912 bp | + | 32.4% |
| tRNA-Pro | Transfer RNA | 17,867 | 17,928 | 62 bp | + | – |