Nereis pelagica
GC content
37.00%
Whole genome
Non-coding
1,482 bp
Including the D-loop
Where Nereis pelagica sits among 2,335 species
Whole-genome GC content against maximum lifespan. Nereis pelagica has the 2,213th longest lifespan of them.
- This species
- All other species
Base composition
Whole genome15,764 bp
- GC skew (G − C) / (G + C)
- −0.195
- AT skew (A − T) / (A + T)
- +0.001
About this record
- Lifespan source
- SeaLifeBase v26.06
- Based on
- an animal in the wild
- Data quality
- acceptable
- Licence
- CC BY-NC 4.0
- Status
- New in build 2
- In the database since
- build 2 (2026-11-13)
The lifespan value is for non-commercial use only; the genome data is not restricted by it.
Every change against the 2015 build is in the changelog download.
Composition by region
Reference (L) strand as deposited in RefSeqWhole genome15,764 bp
Protein-coding11,016 bp
12S rRNA803 bp
16S rRNA1,084 bp
All tRNA1,379 bp
Genes and regions
Select a column to sort; select a gene to compare it across species| Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| ND1NADH dehydrogenase subunit 1 | 919 bp | 35.91% | −0.236 | −0.015 | |||||
| ND2NADH dehydrogenase subunit 2 | 984 bp | 35.98% | −0.226 | +0.038 | |||||
| COX1Cytochrome c oxidase subunit I | 1,534 bp | 40.29% | −0.139 | −0.037 | |||||
| COX2Cytochrome c oxidase subunit II | 690 bp | 37.25% | −0.097 | +0.072 | |||||
| ATP8ATP synthase F0 subunit 8 | 159 bp | 42.14% | −0.433 | −0.152 | |||||
| ATP6ATP synthase F0 subunit 6 | 693 bp | 39.25% | −0.257 | −0.040 | |||||
| COX3Cytochrome c oxidase subunit III | 783 bp | 42.27% | −0.118 | −0.133 | |||||
| ND3NADH dehydrogenase subunit 3 | 345 bp | 34.78% | −0.233 | −0.049 | |||||
| ND4LNADH dehydrogenase subunit 4L | 288 bp | 34.03% | −0.143 | −0.032 | |||||
| ND4NADH dehydrogenase subunit 4 | 1,332 bp | 37.31% | −0.304 | −0.037 | |||||
| ND5NADH dehydrogenase subunit 5 | 1,687 bp | 36.99% | −0.292 | +0.007 | |||||
| ND6NADH dehydrogenase subunit 6 | 457 bp | 36.98% | −0.243 | −0.063 | |||||
| CYTBCytochrome b | 1,152 bp | 39.58% | −0.171 | −0.037 | |||||
| 12S rRNA12S ribosomal RNA | 803 bp | 37.98% | −0.207 | +0.161 | |||||
| 16S rRNA16S ribosomal RNA | 1,084 bp | 34.69% | −0.106 | +0.065 |
Codon usage
Counts per codon, darker is more frequent3,673 codons in all protein-coding genes. Grouped with the Invertebrate mitochondrial code (NCBI table 5).
Phe F6.4%
UUU141
UUC95
Leu L14.1%
UUA188
UUG17
CUU98
CUC46
CUA138
CUG30
Ile I8.4%
AUU187
AUC120
Met M8.1%
AUA242
AUG56
Val V5.9%
GUU51
GUC33
GUA105
GUG27
Ser S9.7%
UCU75
UCC54
UCA89
UCG11
AGU21
AGC28
AGA57
AGG20
Pro P4.8%
CCU41
CCC73
CCA55
CCG9
Thr T6.8%
ACU63
ACC68
ACA106
ACG14
Ala A7.4%
GCU65
GCC89
GCA98
GCG18
Tyr Y3.0%
UAU47
UAC63
His H3.0%
CAU51
CAC59
Gln Q2.0%
CAA65
CAG10
Asn N3.7%
AAU63
AAC72
Lys K2.2%
AAA65
AAG15
Asp D1.8%
GAU34
GAC31
Glu E2.1%
GAA59
GAG19
Cys C0.8%
UGU20
UGC9
Trp W2.9%
UGA83
UGG22
Arg R1.6%
CGU19
CGC11
CGA21
CGG8
Gly G5.2%
GGU20
GGC34
GGA95
GGG41
Stop 0.2%
UAA8
UAG1
Genome map
37 annotated features in NC_086457.1Hover, tap or tab to a feature to see its position, length, strand and GC content. Genes and rRNAs open their own pages.
- Protein-coding13
- rRNA2
- tRNA22
- Outer ring: + strand, arrows run clockwise. Inner ring: − strand.
- Middle ring: GC% of each gene against the whole genome (37.0%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).
All 37 features as a table
| Feature | Type | Start | End | Length | Strand | GC |
|---|---|---|---|---|---|---|
| tRNA-Tyr | Transfer RNA | 353 | 415 | 63 bp | + | – |
| ATP8 | Protein-coding gene | 474 | 632 | 159 bp | + | 42.1% |
| tRNA-Met | Transfer RNA | 633 | 693 | 61 bp | + | – |
| tRNA-Asp | Transfer RNA | 705 | 767 | 63 bp | + | – |
| COX3 | Protein-coding gene | 809 | 1,591 | 783 bp | + | 42.3% |
| tRNA-Gln | Transfer RNA | 1,592 | 1,650 | 59 bp | + | – |
| ND6 | Protein-coding gene | 1,660 | 2,116 | 457 bp | + | 37.0% |
| CYTB | Protein-coding gene | 2,117 | 3,268 | 1,152 bp | + | 39.6% |
| tRNA-Trp | Transfer RNA | 3,269 | 3,331 | 63 bp | + | – |
| ATP6 | Protein-coding gene | 3,332 | 4,024 | 693 bp | + | 39.3% |
| tRNA-Arg | Transfer RNA | 4,031 | 4,080 | 50 bp | + | – |
| tRNA-His | Transfer RNA | 4,081 | 4,142 | 62 bp | + | – |
| ND5 | Protein-coding gene | 4,143 | 5,829 | 1,687 bp | + | 37.0% |
| tRNA-Phe | Transfer RNA | 5,830 | 5,891 | 62 bp | + | – |
| tRNA-Glu | Transfer RNA | 5,892 | 5,956 | 65 bp | + | – |
| tRNA-Pro | Transfer RNA | 5,957 | 6,018 | 62 bp | + | – |
| tRNA-Thr | Transfer RNA | 6,036 | 6,103 | 68 bp | + | – |
| ND4L | Protein-coding gene | 6,104 | 6,391 | 288 bp | + | 34.0% |
| ND4 | Protein-coding gene | 6,385 | 7,716 | 1,332 bp | + | 37.3% |
| 12S rRNA | Ribosomal RNA | 7,717 | 8,519 | 803 bp | + | 38.0% |
| tRNA-Val | Transfer RNA | 8,520 | 8,584 | 65 bp | + | – |
| 16S rRNA | Ribosomal RNA | 8,685 | 9,768 | 1,084 bp | + | 34.7% |
| tRNA-Leu | Transfer RNA | 9,769 | 9,831 | 63 bp | + | – |
| tRNA-Ser (AGY) | Transfer RNA | 9,836 | 9,894 | 59 bp | + | – |
| tRNA-Ala | Transfer RNA | 9,895 | 9,958 | 64 bp | + | – |
| tRNA-Leu (CUN) | Transfer RNA | 9,959 | 10,021 | 63 bp | + | – |
| ND1 | Protein-coding gene | 10,022 | 10,940 | 919 bp | + | 35.9% |
| tRNA-Ile | Transfer RNA | 10,941 | 11,005 | 65 bp | + | – |
| tRNA-Lys | Transfer RNA | 11,006 | 11,068 | 63 bp | + | – |
| ND3 | Protein-coding gene | 11,069 | 11,413 | 345 bp | + | 34.8% |
| tRNA-Ser | Transfer RNA | 11,414 | 11,479 | 66 bp | + | – |
| ND2 | Protein-coding gene | 11,480 | 12,463 | 984 bp | + | 36.0% |
| tRNA-Cys | Transfer RNA | 12,467 | 12,528 | 62 bp | + | – |
| COX1 | Protein-coding gene | 12,531 | 14,064 | 1,534 bp | + | 40.3% |
| tRNA-Asn | Transfer RNA | 14,065 | 14,129 | 65 bp | + | – |
| COX2 | Protein-coding gene | 14,130 | 14,819 | 690 bp | + | 37.3% |
| tRNA-Gly | Transfer RNA | 14,882 | 14,947 | 66 bp | + | – |