Crocodylus niloticus
Nile crocodile
GC content
43.37%
Whole genome
Non-coding
1,327 bp
D-loop 1,105 bp
Where Nile crocodile sits among 2,335 species
Whole-genome GC content against maximum lifespan. Nile crocodile has the 112th longest lifespan of them.
- This species
- Other reptiles
- Other classes
Base composition
Whole genome16,830 bp
- GC skew (G − C) / (G + C)
- −0.309
- AT skew (A − T) / (A + T)
- +0.125
Life history
- Maximum lifespan
- 56 years
- Adult weight
- 94.2 kg
- Female sexual maturity
- 19 years
Lifespan from AnAge · AnAge record · other traits from AnAge Build 15 (HAGRID 03255)
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 genome16,830 bp
Protein-coding11,382 bp
12S rRNA984 bp
16S rRNA1,593 bp
All tRNA1,550 bp
D-loop1,105 bp
Genes and regions
Select a column to sort; select a gene to compare it across species| Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| ND1NADH dehydrogenase subunit 1 | 963 bp | 45.48% | −0.333 | +0.013 | |||||
| ND2NADH dehydrogenase subunit 2 | 1,056 bp | 44.41% | −0.463 | +0.094 | |||||
| COX1Cytochrome c oxidase subunit I | 1,557 bp | 42.78% | −0.249 | +0.021 | |||||
| COX2Cytochrome c oxidase subunit II | 684 bp | 41.96% | −0.359 | +0.169 | |||||
| ATP8ATP synthase F0 subunit 8 | 162 bp | 35.19% | −0.509 | +0.257 | |||||
| ATP6ATP synthase F0 subunit 6 | 684 bp | 43.71% | −0.438 | +0.117 | |||||
| COX3Cytochrome c oxidase subunit III | 784 bp | 46.05% | −0.296 | +0.021 | |||||
| ND3NADH dehydrogenase subunit 3 | 348 bp | 47.13% | −0.268 | +0.033 | |||||
| ND4LNADH dehydrogenase subunit 4L | 294 bp | 45.24% | −0.444 | −0.043 | |||||
| ND4NADH dehydrogenase subunit 4 | 1,374 bp | 42.50% | −0.411 | +0.106 | |||||
| ND5NADH dehydrogenase subunit 5 | 1,855 bp | 45.07% | −0.404 | +0.125 | |||||
| ND6NADH dehydrogenase subunit 6 | 528 bp | 44.32% | −0.521 | +0.422 | |||||
| CYTBCytochrome b | 1,156 bp | 46.02% | −0.361 | +0.061 | |||||
| 12S rRNA12S ribosomal RNA | 984 bp | 46.95% | −0.100 | +0.230 | |||||
| 16S rRNA16S ribosomal RNA | 1,593 bp | 43.25% | −0.120 | +0.254 | |||||
| D-loopControl region (D-loop) | 1,105 bp | 31.67% | −0.240 | +0.144 |
Codon usage
Counts per codon, darker is more frequent3,814 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).
Phe F5.8%
UUU81
UUC141
Leu L16.8%
UUA107
UUG18
CUU73
CUC90
CUA280
CUG72
Ile I7.8%
AUU140
AUC159
Met M5.2%
AUA146
AUG54
Val V5.2%
GUU40
GUC50
GUA74
GUG33
Ser S7.7%
UCU32
UCC77
UCA98
UCG18
AGU16
AGC54
Pro P5.2%
CCU18
CCC51
CCA114
CCG17
Thr T9.3%
ACU49
ACC138
ACA150
ACG17
Ala A7.6%
GCU35
GCC145
GCA98
GCG13
Tyr Y3.0%
UAU44
UAC70
His H2.5%
CAU22
CAC72
Gln Q2.8%
CAA90
CAG17
Asn N3.4%
AAU34
AAC96
Lys K2.3%
AAA79
AAG9
Asp D1.9%
GAU16
GAC55
Glu E2.4%
GAA72
GAG20
Cys C0.8%
UGU13
UGC16
Trp W2.6%
UGA78
UGG22
Arg R1.9%
CGU5
CGC16
CGA42
CGG8
Gly G5.5%
GGU14
GGC68
GGA87
GGG41
Stop 0.3%
UAA7
UAG1
AGA0
AGG2
Genome map
38 annotated features in NC_008142.1Hover, 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 (43.4%, 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 | + | 47.0% |
| tRNA-Val | Transfer RNA | 985 | 1,053 | 69 bp | + | – |
| 16S rRNA | Ribosomal RNA | 1,054 | 2,646 | 1,593 bp | + | 43.3% |
| tRNA-Leu (UUR) | Transfer RNA | 2,648 | 2,720 | 73 bp | + | – |
| ND1 | Protein-coding gene | 2,722 | 3,684 | 963 bp | + | 45.5% |
| tRNA-Ile | Transfer RNA | 3,681 | 3,754 | 74 bp | + | – |
| tRNA-Gln | Transfer RNA | 3,755 | 3,823 | 69 bp | − | – |
| tRNA-Met | Transfer RNA | 3,826 | 3,893 | 68 bp | + | – |
| ND2 | Protein-coding gene | 3,898 | 4,953 | 1,056 bp | + | 44.4% |
| tRNA-Trp | Transfer RNA | 4,953 | 5,028 | 76 bp | + | – |
| tRNA-Ala | Transfer RNA | 5,032 | 5,097 | 66 bp | − | – |
| tRNA-Asn | Transfer RNA | 5,101 | 5,172 | 72 bp | − | – |
| tRNA-Cys | Transfer RNA | 5,179 | 5,244 | 66 bp | − | – |
| tRNA-Tyr | Transfer RNA | 5,245 | 5,317 | 73 bp | − | – |
| COX1 | Protein-coding gene | 5,317 | 6,873 | 1,557 bp | + | 42.8% |
| tRNA-Ser (UCN) | Transfer RNA | 6,897 | 6,963 | 67 bp | − | – |
| tRNA-Asp | Transfer RNA | 6,967 | 7,038 | 72 bp | + | – |
| COX2 | Protein-coding gene | 7,039 | 7,722 | 684 bp | + | 42.0% |
| tRNA-Lys | Transfer RNA | 7,724 | 7,797 | 74 bp | + | – |
| ATP8 | Protein-coding gene | 7,799 | 7,960 | 162 bp | + | 35.2% |
| ATP6 | Protein-coding gene | 7,951 | 8,634 | 684 bp | + | 43.7% |
| COX3 | Protein-coding gene | 8,634 | 9,417 | 784 bp | + | 46.1% |
| tRNA-Gly | Transfer RNA | 9,419 | 9,487 | 69 bp | + | – |
| ND3 | Protein-coding gene | 9,488 | 9,835 | 348 bp | + | 47.1% |
| tRNA-Arg | Transfer RNA | 9,846 | 9,911 | 66 bp | + | – |
| ND4L | Protein-coding gene | 9,918 | 10,211 | 294 bp | + | 45.2% |
| ND4 | Protein-coding gene | 10,205 | 11,578 | 1,374 bp | + | 42.5% |
| tRNA-Ser (AGY) | Transfer RNA | 11,608 | 11,680 | 73 bp | + | – |
| tRNA-His | Transfer RNA | 11,687 | 11,757 | 71 bp | + | – |
| tRNA-Leu (CUN) | Transfer RNA | 11,785 | 11,856 | 72 bp | + | – |
| ND5 | Protein-coding gene | 11,860 | 13,714 | 1,855 bp | + | 45.1% |
| ND6 | Protein-coding gene | 13,670 | 14,197 | 528 bp | − | 44.3% |
| tRNA-Glu | Transfer RNA | 14,198 | 14,267 | 70 bp | − | – |
| CYTB | Protein-coding gene | 14,283 | 15,438 | 1,156 bp | + | 46.0% |
| tRNA-Thr | Transfer RNA | 15,495 | 15,566 | 72 bp | + | – |
| tRNA-Pro | Transfer RNA | 15,579 | 15,646 | 68 bp | − | – |
| tRNA-Phe | Transfer RNA | 15,657 | 15,726 | 70 bp | + | – |
| D-loop | Control region | 15,726 | 16,830 | 1,105 bp | – | 31.7% |