Atractosteus spatula
Alligator gar
GC content
44.30%
Whole genome
Non-coding
584 bp
D-loop 503 bp
Where Alligator gar sits among 2,335 species
Whole-genome GC content against maximum lifespan. Alligator gar has the 36th longest lifespan of them.
- This species
- Other ray-finned fishes
- Other classes
Base composition
Whole genome16,262 bp
- GC skew (G − C) / (G + C)
- −0.307
- AT skew (A − T) / (A + T)
- +0.109
About this record
- Lifespan source
- FishBase 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 genome16,262 bp
Protein-coding11,480 bp
12S rRNA962 bp
16S rRNA1,691 bp
All tRNA1,554 bp
D-loop503 bp
Genes and regions
Select a column to sort; select a gene to compare it across species| Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| ND1NADH dehydrogenase subunit 1 | 975 bp | 44.72% | −0.440 | +0.054 | |||||
| ND2NADH dehydrogenase subunit 2 | 1,045 bp | 42.01% | −0.503 | +0.215 | |||||
| COX1Cytochrome c oxidase subunit I | 1,557 bp | 45.15% | −0.203 | −0.049 | |||||
| COX2Cytochrome c oxidase subunit II | 691 bp | 43.56% | −0.296 | +0.082 | |||||
| ATP8ATP synthase F0 subunit 8 | 168 bp | 42.86% | −0.556 | +0.063 | |||||
| ATP6ATP synthase F0 subunit 6 | 683 bp | 44.80% | −0.444 | +0.019 | |||||
| COX3Cytochrome c oxidase subunit III | 785 bp | 47.13% | −0.292 | +0.022 | |||||
| ND3NADH dehydrogenase subunit 3 | 349 bp | 43.84% | −0.294 | −0.102 | |||||
| ND4LNADH dehydrogenase subunit 4L | 297 bp | 46.13% | −0.416 | +0.013 | |||||
| ND4NADH dehydrogenase subunit 4 | 1,381 bp | 44.46% | −0.368 | +0.095 | |||||
| ND5NADH dehydrogenase subunit 5 | 1,911 bp | 44.27% | −0.423 | +0.099 | |||||
| ND6NADH dehydrogenase subunit 6 | 519 bp | 45.09% | −0.581 | +0.516 | |||||
| CYTBCytochrome b | 1,141 bp | 45.22% | −0.380 | +0.027 | |||||
| 12S rRNA12S ribosomal RNA | 962 bp | 47.35% | −0.121 | +0.241 | |||||
| 16S rRNA16S ribosomal RNA | 1,691 bp | 43.70% | −0.134 | +0.258 | |||||
| D-loopControl region (D-loop) | 503 bp | 33.00% | −0.084 | +0.015 |
Codon usage
Counts per codon, darker is more frequent3,831 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).
Phe F6.1%
UUU106
UUC126
Leu L16.7%
UUA102
UUG21
CUU83
CUC127
CUA259
CUG48
Ile I7.9%
AUU162
AUC142
Met M4.5%
AUA125
AUG47
Val V5.3%
GUU51
GUC57
GUA76
GUG19
Ser S6.1%
UCU25
UCC72
UCA74
UCG7
AGU7
AGC47
Pro P6.0%
CCU32
CCC88
CCA104
CCG4
Thr T8.4%
ACU39
ACC132
ACA140
ACG12
Ala A8.3%
GCU44
GCC154
GCA112
GCG9
Tyr Y3.1%
UAU55
UAC63
His H2.6%
CAU23
CAC75
Gln Q2.8%
CAA98
CAG10
Asn N3.2%
AAU38
AAC85
Lys K2.1%
AAA71
AAG11
Asp D2.0%
GAU19
GAC57
Glu E2.7%
GAA90
GAG13
Cys C0.8%
UGU11
UGC20
Trp W3.2%
UGA103
UGG19
Arg R2.0%
CGU6
CGC14
CGA50
CGG5
Gly G6.2%
GGU20
GGC68
GGA106
GGG42
Stop 0.2%
UAA4
UAG0
AGA0
AGG2
Genome map
38 annotated features in NC_008131.1Hover, 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
- D-loop1
- Outer ring: + strand, arrows run clockwise. Inner ring: − strand.
- Middle ring: GC% of each gene against the whole genome (44.3%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).
All 38 features as a table
| Feature | Type | Start | End | Length | Strand | GC |
|---|---|---|---|---|---|---|
| tRNA-Phe | Transfer RNA | 1 | 69 | 69 bp | + | – |
| 12S rRNA | Ribosomal RNA | 70 | 1,031 | 962 bp | + | 47.4% |
| tRNA-Val | Transfer RNA | 1,032 | 1,102 | 71 bp | + | – |
| 16S rRNA | Ribosomal RNA | 1,103 | 2,793 | 1,691 bp | + | 43.7% |
| tRNA-Leu (UUR) | Transfer RNA | 2,794 | 2,868 | 75 bp | + | – |
| ND1 | Protein-coding gene | 2,869 | 3,843 | 975 bp | + | 44.7% |
| tRNA-Ile | Transfer RNA | 3,852 | 3,929 | 78 bp | + | – |
| tRNA-Gln | Transfer RNA | 3,922 | 3,992 | 71 bp | − | – |
| tRNA-Met | Transfer RNA | 3,992 | 4,060 | 69 bp | + | – |
| ND2 | Protein-coding gene | 4,061 | 5,105 | 1,045 bp | + | 42.0% |
| tRNA-Trp | Transfer RNA | 5,106 | 5,176 | 71 bp | + | – |
| tRNA-Ala | Transfer RNA | 5,178 | 5,246 | 69 bp | − | – |
| tRNA-Asn | Transfer RNA | 5,248 | 5,320 | 73 bp | − | – |
| tRNA-Cys | Transfer RNA | 5,363 | 5,428 | 66 bp | − | – |
| tRNA-Tyr | Transfer RNA | 5,428 | 5,498 | 71 bp | − | – |
| COX1 | Protein-coding gene | 5,500 | 7,056 | 1,557 bp | + | 45.2% |
| tRNA-Ser (UCN) | Transfer RNA | 7,048 | 7,118 | 71 bp | − | – |
| tRNA-Asp | Transfer RNA | 7,123 | 7,194 | 72 bp | + | – |
| COX2 | Protein-coding gene | 7,207 | 7,897 | 691 bp | + | 43.6% |
| tRNA-Lys | Transfer RNA | 7,898 | 7,969 | 72 bp | + | – |
| ATP8 | Protein-coding gene | 7,971 | 8,138 | 168 bp | + | 42.9% |
| ATP6 | Protein-coding gene | 8,129 | 8,811 | 683 bp | + | 44.8% |
| COX3 | Protein-coding gene | 8,812 | 9,596 | 785 bp | + | 47.1% |
| tRNA-Gly | Transfer RNA | 9,597 | 9,668 | 72 bp | + | – |
| ND3 | Protein-coding gene | 9,669 | 10,017 | 349 bp | + | 43.8% |
| tRNA-Arg | Transfer RNA | 10,018 | 10,087 | 70 bp | + | – |
| ND4L | Protein-coding gene | 10,088 | 10,384 | 297 bp | + | 46.1% |
| ND4 | Protein-coding gene | 10,378 | 11,758 | 1,381 bp | + | 44.5% |
| tRNA-His | Transfer RNA | 11,759 | 11,827 | 69 bp | + | – |
| tRNA-Ser (AGY) | Transfer RNA | 11,828 | 11,897 | 70 bp | + | – |
| tRNA-Leu (CUN) | Transfer RNA | 11,899 | 11,970 | 72 bp | + | – |
| ND5 | Protein-coding gene | 11,971 | 13,881 | 1,911 bp | + | 44.3% |
| ND6 | Protein-coding gene | 13,877 | 14,395 | 519 bp | − | 45.1% |
| tRNA-Glu | Transfer RNA | 14,396 | 14,464 | 69 bp | − | – |
| CYTB | Protein-coding gene | 14,468 | 15,608 | 1,141 bp | + | 45.2% |
| tRNA-Thr | Transfer RNA | 15,609 | 15,682 | 74 bp | + | – |
| tRNA-Pro | Transfer RNA | 15,690 | 15,759 | 70 bp | − | – |
| D-loop | Control region | 15,760 | 16,262 | 503 bp | – | 33.0% |