Crocodylus acutus
American crocodile
GC content
42.52%
Whole genome
Non-coding
1,371 bp
D-loop 1,155 bp
Where American crocodile sits among 2,335 species
Whole-genome GC content against maximum lifespan. American crocodile has the 177th longest lifespan of them.
- This species
- Other reptiles
- Other classes
Base composition
Whole genome16,883 bp
- GC skew (G − C) / (G + C)
- −0.313
- AT skew (A − T) / (A + T)
- +0.126
Life history
- Maximum lifespan
- 47 years
- Adult weight
- 76.7 kg
- Female sexual maturity
- 10 years
Lifespan from AnAge · AnAge record · other traits from AnAge Build 15 (HAGRID 03251)
About this record
- Lifespan source
- AnAge build 15
- Based on
- an animal in captivity
- 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 genome16,883 bp
Protein-coding11,391 bp
12S rRNA984 bp
16S rRNA1,594 bp
All tRNA1,545 bp
D-loop1,155 bp
Genes and regions
Select a column to sort; select a gene to compare it across species| Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| ND1NADH dehydrogenase subunit 1 | 963 bp | 43.93% | −0.319 | +0.019 | |||||
| ND2NADH dehydrogenase subunit 2 | 1,056 bp | 44.22% | −0.465 | +0.097 | |||||
| COX1Cytochrome c oxidase subunit I | 1,557 bp | 42.52% | −0.242 | +0.017 | |||||
| COX2Cytochrome c oxidase subunit II | 684 bp | 41.81% | −0.336 | +0.151 | |||||
| ATP8ATP synthase F0 subunit 8 | 162 bp | 33.95% | −0.527 | +0.252 | |||||
| ATP6ATP synthase F0 subunit 6 | 696 bp | 42.82% | −0.450 | +0.121 | |||||
| COX3Cytochrome c oxidase subunit III | 784 bp | 45.41% | −0.275 | +0.005 | |||||
| ND3NADH dehydrogenase subunit 3 | 348 bp | 44.83% | −0.295 | +0.052 | |||||
| ND4LNADH dehydrogenase subunit 4L | 294 bp | 44.22% | −0.462 | −0.061 | |||||
| ND4NADH dehydrogenase subunit 4 | 1,374 bp | 42.94% | −0.400 | +0.102 | |||||
| ND5NADH dehydrogenase subunit 5 | 1,860 bp | 43.60% | −0.435 | +0.133 | |||||
| ND6NADH dehydrogenase subunit 6 | 528 bp | 43.94% | −0.552 | +0.446 | |||||
| CYTBCytochrome b | 1,165 bp | 44.03% | −0.392 | +0.083 | |||||
| 12S rRNA12S ribosomal RNA | 984 bp | 47.26% | −0.110 | +0.241 | |||||
| 16S rRNA16S ribosomal RNA | 1,594 bp | 42.85% | −0.122 | +0.258 | |||||
| D-loopControl region (D-loop) | 1,155 bp | 30.39% | −0.219 | +0.134 |
Codon usage
Counts per codon, darker is more frequent3,823 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).
Phe F5.7%
UUU86
UUC131
Leu L17.0%
UUA113
UUG23
CUU75
CUC91
CUA284
CUG62
Ile I7.7%
AUU139
AUC157
Met M5.3%
AUA151
AUG52
Val V5.1%
GUU44
GUC39
GUA79
GUG32
Ser S7.6%
UCU36
UCC72
UCA98
UCG16
AGU14
AGC54
Pro P5.3%
CCU21
CCC50
CCA121
CCG12
Thr T9.4%
ACU56
ACC134
ACA154
ACG17
Ala A7.6%
GCU42
GCC139
GCA100
GCG8
Tyr Y3.1%
UAU52
UAC65
His H2.4%
CAU19
CAC73
Gln Q2.9%
CAA97
CAG12
Asn N3.3%
AAU29
AAC98
Lys K2.3%
AAA83
AAG6
Asp D1.9%
GAU20
GAC53
Glu E2.4%
GAA71
GAG20
Cys C0.7%
UGU14
UGC14
Trp W2.6%
UGA82
UGG18
Arg R1.9%
CGU5
CGC16
CGA45
CGG5
Gly G5.6%
GGU25
GGC58
GGA87
GGG43
Stop 0.3%
UAA8
UAG1
AGA0
AGG2
Genome map
38 annotated features in NC_015647.1Hover, 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 (42.5%, 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 |
|---|---|---|---|---|---|---|
| 12S rRNA | Ribosomal RNA | 1 | 984 | 984 bp | + | 47.3% |
| tRNA-Val | Transfer RNA | 985 | 1,053 | 69 bp | + | – |
| 16S rRNA | Ribosomal RNA | 1,054 | 2,647 | 1,594 bp | + | 42.9% |
| tRNA-Leu (UUR) | Transfer RNA | 2,649 | 2,723 | 75 bp | + | – |
| ND1 | Protein-coding gene | 2,724 | 3,686 | 963 bp | + | 43.9% |
| tRNA-Ile | Transfer RNA | 3,685 | 3,756 | 72 bp | + | – |
| tRNA-Gln | Transfer RNA | 3,755 | 3,825 | 71 bp | − | – |
| tRNA-Met | Transfer RNA | 3,828 | 3,895 | 68 bp | + | – |
| ND2 | Protein-coding gene | 3,900 | 4,955 | 1,056 bp | + | 44.2% |
| tRNA-Trp | Transfer RNA | 4,956 | 5,029 | 74 bp | + | – |
| tRNA-Ala | Transfer RNA | 5,032 | 5,100 | 69 bp | − | – |
| tRNA-Asn | Transfer RNA | 5,102 | 5,174 | 73 bp | − | – |
| tRNA-Cys | Transfer RNA | 5,181 | 5,246 | 66 bp | − | – |
| tRNA-Tyr | Transfer RNA | 5,247 | 5,317 | 71 bp | − | – |
| COX1 | Protein-coding gene | 5,319 | 6,875 | 1,557 bp | + | 42.5% |
| tRNA-Ser (UCN) | Transfer RNA | 6,896 | 6,965 | 70 bp | − | – |
| tRNA-Asp | Transfer RNA | 6,969 | 7,040 | 72 bp | + | – |
| COX2 | Protein-coding gene | 7,041 | 7,724 | 684 bp | + | 41.8% |
| tRNA-Lys | Transfer RNA | 7,726 | 7,799 | 74 bp | + | – |
| ATP8 | Protein-coding gene | 7,801 | 7,962 | 162 bp | + | 34.0% |
| ATP6 | Protein-coding gene | 7,941 | 8,636 | 696 bp | + | 42.8% |
| COX3 | Protein-coding gene | 8,636 | 9,419 | 784 bp | + | 45.4% |
| tRNA-Gly | Transfer RNA | 9,420 | 9,489 | 70 bp | + | – |
| ND3 | Protein-coding gene | 9,490 | 9,837 | 348 bp | + | 44.8% |
| tRNA-Arg | Transfer RNA | 9,848 | 9,916 | 69 bp | + | – |
| ND4L | Protein-coding gene | 9,920 | 10,213 | 294 bp | + | 44.2% |
| ND4 | Protein-coding gene | 10,207 | 11,580 | 1,374 bp | + | 42.9% |
| tRNA-Ser (AGY) | Transfer RNA | 11,611 | 11,671 | 61 bp | + | – |
| tRNA-His | Transfer RNA | 11,689 | 11,758 | 70 bp | + | – |
| tRNA-Leu (CUN) | Transfer RNA | 11,788 | 11,858 | 71 bp | + | – |
| ND5 | Protein-coding gene | 11,862 | 13,721 | 1,860 bp | + | 43.6% |
| ND6 | Protein-coding gene | 13,672 | 14,199 | 528 bp | − | 43.9% |
| tRNA-Glu | Transfer RNA | 14,200 | 14,270 | 71 bp | − | – |
| CYTB | Protein-coding gene | 14,285 | 15,449 | 1,165 bp | + | 44.0% |
| tRNA-Thr | Transfer RNA | 15,497 | 15,569 | 73 bp | + | – |
| tRNA-Pro | Transfer RNA | 15,582 | 15,649 | 68 bp | − | – |
| tRNA-Phe | Transfer RNA | 15,660 | 15,729 | 70 bp | + | – |
| D-loop | Control region | 15,729 | 16,883 | 1,155 bp | – | 30.4% |