Sphyrna zygaena
Smooth hammerhead
GC content
38.23%
Whole genome
Non-coding
1,147 bp
D-loop 1,089 bp
Where Smooth hammerhead sits among 2,335 species
Whole-genome GC content against maximum lifespan. Smooth hammerhead has the 852nd longest lifespan of them.
- This species
- Other sharks and rays
- Other classes
Base composition
Whole genome16,731 bp
- GC skew (G − C) / (G + C)
- −0.309
- AT skew (A − T) / (A + T)
- +0.021
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 genome16,731 bp
Protein-coding11,407 bp
12S rRNA954 bp
16S rRNA1,671 bp
All tRNA1,552 bp
D-loop1,089 bp
Genes and regions
Select a column to sort; select a gene to compare it across species| Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| ND1NADH dehydrogenase subunit 1 | 975 bp | 40.72% | −0.446 | +0.010 | |||||
| ND2NADH dehydrogenase subunit 2 | 1,045 bp | 39.14% | −0.535 | +0.050 | |||||
| COX1Cytochrome c oxidase subunit I | 1,557 bp | 38.41% | −0.187 | −0.105 | |||||
| COX2Cytochrome c oxidase subunit II | 691 bp | 37.48% | −0.243 | +0.037 | |||||
| ATP8ATP synthase F0 subunit 8 | 168 bp | 29.17% | −0.551 | +0.025 | |||||
| ATP6ATP synthase F0 subunit 6 | 684 bp | 35.23% | −0.411 | −0.043 | |||||
| COX3Cytochrome c oxidase subunit III | 786 bp | 41.86% | −0.252 | −0.046 | |||||
| ND3NADH dehydrogenase subunit 3 | 349 bp | 39.54% | −0.319 | −0.118 | |||||
| ND4LNADH dehydrogenase subunit 4L | 297 bp | 41.75% | −0.435 | −0.145 | |||||
| ND4NADH dehydrogenase subunit 4 | 1,381 bp | 37.15% | −0.407 | −0.046 | |||||
| ND5NADH dehydrogenase subunit 5 | 1,830 bp | 36.34% | −0.459 | −0.001 | |||||
| ND6NADH dehydrogenase subunit 6 | 522 bp | 38.70% | −0.574 | +0.375 | |||||
| CYTBCytochrome b | 1,145 bp | 40.61% | −0.394 | −0.065 | |||||
| 12S rRNA12S ribosomal RNA | 954 bp | 40.67% | −0.093 | +0.163 | |||||
| 16S rRNA16S ribosomal RNA | 1,671 bp | 37.40% | −0.114 | +0.161 | |||||
| D-loopControl region (D-loop) | 1,089 bp | 33.70% | −0.286 | −0.008 |
Codon usage
Counts per codon, darker is more frequent3,808 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).
Phe F6.4%
UUU125
UUC119
Leu L17.3%
UUA182
UUG15
CUU146
CUC111
CUA194
CUG9
Ile I9.0%
AUU199
AUC143
Met M4.3%
AUA138
AUG27
Val V4.7%
GUU65
GUC28
GUA75
GUG10
Ser S7.2%
UCU56
UCC68
UCA90
UCG3
AGU28
AGC28
Pro P5.5%
CCU58
CCC38
CCA112
CCG1
Thr T7.4%
ACU75
ACC81
ACA125
ACG1
Ala A7.3%
GCU87
GCC93
GCA94
GCG4
Tyr Y3.2%
UAU77
UAC45
His H2.7%
CAU50
CAC54
Gln Q2.5%
CAA92
CAG3
Asn N4.0%
AAU67
AAC86
Lys K2.2%
AAA84
AAG1
Asp D1.8%
GAU39
GAC31
Glu E2.6%
GAA93
GAG5
Cys C0.6%
UGU14
UGC10
Trp W3.2%
UGA116
UGG6
Arg R1.9%
CGU12
CGC16
CGA42
CGG2
Gly G6.0%
GGU68
GGC47
GGA87
GGG25
Stop 0.2%
UAA7
UAG0
AGA1
AGG0
Genome map
38 annotated features in NC_025778.1Hover, 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 (38.2%, 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 | 71 | 71 bp | + | – |
| 12S rRNA | Ribosomal RNA | 72 | 1,025 | 954 bp | + | 40.7% |
| tRNA-Val | Transfer RNA | 1,026 | 1,097 | 72 bp | + | – |
| 16S rRNA | Ribosomal RNA | 1,098 | 2,768 | 1,671 bp | + | 37.4% |
| tRNA-Leu (UUR) | Transfer RNA | 2,769 | 2,843 | 75 bp | + | – |
| ND1 | Protein-coding gene | 2,844 | 3,818 | 975 bp | + | 40.7% |
| tRNA-Ile | Transfer RNA | 3,819 | 3,887 | 69 bp | + | – |
| tRNA-Gln | Transfer RNA | 3,889 | 3,960 | 72 bp | − | – |
| tRNA-Met | Transfer RNA | 3,961 | 4,029 | 69 bp | + | – |
| ND2 | Protein-coding gene | 4,030 | 5,074 | 1,045 bp | + | 39.1% |
| tRNA-Trp | Transfer RNA | 5,075 | 5,145 | 71 bp | + | – |
| tRNA-Ala | Transfer RNA | 5,147 | 5,215 | 69 bp | − | – |
| tRNA-Asn | Transfer RNA | 5,216 | 5,288 | 73 bp | − | – |
| tRNA-Cys | Transfer RNA | 5,323 | 5,388 | 66 bp | − | – |
| tRNA-Tyr | Transfer RNA | 5,390 | 5,459 | 70 bp | − | – |
| COX1 | Protein-coding gene | 5,461 | 7,017 | 1,557 bp | + | 38.4% |
| tRNA-Ser (UCN) | Transfer RNA | 7,018 | 7,088 | 71 bp | − | – |
| tRNA-Asp | Transfer RNA | 7,092 | 7,161 | 70 bp | + | – |
| COX2 | Protein-coding gene | 7,169 | 7,859 | 691 bp | + | 37.5% |
| tRNA-Lys | Transfer RNA | 7,860 | 7,933 | 74 bp | + | – |
| ATP8 | Protein-coding gene | 7,935 | 8,102 | 168 bp | + | 29.2% |
| ATP6 | Protein-coding gene | 8,093 | 8,776 | 684 bp | + | 35.2% |
| COX3 | Protein-coding gene | 8,776 | 9,561 | 786 bp | + | 41.9% |
| tRNA-Gly | Transfer RNA | 9,564 | 9,633 | 70 bp | + | – |
| ND3 | Protein-coding gene | 9,634 | 9,982 | 349 bp | + | 39.5% |
| tRNA-Arg | Transfer RNA | 9,983 | 10,052 | 70 bp | + | – |
| ND4L | Protein-coding gene | 10,053 | 10,349 | 297 bp | + | 41.8% |
| ND4 | Protein-coding gene | 10,343 | 11,723 | 1,381 bp | + | 37.2% |
| tRNA-His | Transfer RNA | 11,724 | 11,792 | 69 bp | + | – |
| tRNA-Ser (AGY) | Transfer RNA | 11,793 | 11,860 | 68 bp | + | – |
| tRNA-Leu (CUN) | Transfer RNA | 11,861 | 11,932 | 72 bp | + | – |
| ND5 | Protein-coding gene | 11,933 | 13,762 | 1,830 bp | + | 36.3% |
| ND6 | Protein-coding gene | 13,758 | 14,279 | 522 bp | − | 38.7% |
| tRNA-Glu | Transfer RNA | 14,280 | 14,349 | 70 bp | − | – |
| CYTB | Protein-coding gene | 14,352 | 15,496 | 1,145 bp | + | 40.6% |
| tRNA-Thr | Transfer RNA | 15,497 | 15,568 | 72 bp | + | – |
| tRNA-Pro | Transfer RNA | 15,571 | 15,639 | 69 bp | − | – |
| D-loop | Control region | 15,640 | 16,728 | 1,089 bp | – | 33.7% |