Heterodontus francisci
Horn shark
GC content
39.86%
Whole genome
Non-coding
1,130 bp
D-loop 1,068 bp
Where Horn shark sits among 2,335 species
Whole-genome GC content against maximum lifespan. Horn shark has the 1,415th longest lifespan of them.
- This species
- Other sharks and rays
- Other classes
Base composition
Whole genome16,708 bp
- GC skew (G − C) / (G + C)
- −0.350
- AT skew (A − T) / (A + T)
- +0.059
About this record
- Lifespan source
- AnAge build 15
- Based on
- an animal in the wild
- 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 genome16,708 bp
Protein-coding11,402 bp
12S rRNA952 bp
16S rRNA1,676 bp
All tRNA1,557 bp
D-loop1,068 bp
Genes and regions
Select a column to sort; select a gene to compare it across species| Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| ND1NADH dehydrogenase subunit 1 | 976 bp | 42.93% | −0.480 | +0.056 | |||||
| ND2NADH dehydrogenase subunit 2 | 1,047 bp | 40.78% | −0.578 | +0.094 | |||||
| COX1Cytochrome c oxidase subunit I | 1,557 bp | 39.88% | −0.240 | −0.068 | |||||
| COX2Cytochrome c oxidase subunit II | 691 bp | 37.34% | −0.233 | +0.062 | |||||
| ATP8ATP synthase F0 subunit 8 | 168 bp | 33.33% | −0.679 | +0.196 | |||||
| ATP6ATP synthase F0 subunit 6 | 684 bp | 36.11% | −0.441 | −0.016 | |||||
| COX3Cytochrome c oxidase subunit III | 786 bp | 42.24% | −0.283 | −0.018 | |||||
| ND3NADH dehydrogenase subunit 3 | 351 bp | 43.02% | −0.417 | −0.090 | |||||
| ND4LNADH dehydrogenase subunit 4L | 297 bp | 41.41% | −0.415 | −0.138 | |||||
| ND4NADH dehydrogenase subunit 4 | 1,381 bp | 39.83% | −0.465 | +0.037 | |||||
| ND5NADH dehydrogenase subunit 5 | 1,830 bp | 41.20% | −0.531 | +0.080 | |||||
| ND6NADH dehydrogenase subunit 6 | 510 bp | 39.80% | −0.567 | +0.407 | |||||
| CYTBCytochrome b | 1,146 bp | 43.11% | −0.466 | −0.037 | |||||
| 12S rRNA12S ribosomal RNA | 952 bp | 44.01% | −0.141 | +0.186 | |||||
| 16S rRNA16S ribosomal RNA | 1,676 bp | 37.71% | −0.136 | +0.176 | |||||
| D-loopControl region (D-loop) | 1,068 bp | 34.36% | −0.243 | −0.001 |
Codon usage
Counts per codon, darker is more frequent3,807 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).
Phe F6.2%
UUU91
UUC145
Leu L17.3%
UUA169
UUG10
CUU103
CUC126
CUA237
CUG12
Ile I9.4%
AUU177
AUC180
Met M4.3%
AUA139
AUG23
Val V4.2%
GUU43
GUC33
GUA71
GUG13
Ser S7.3%
UCU41
UCC79
UCA101
UCG2
AGU23
AGC31
Pro P5.6%
CCU49
CCC56
CCA107
CCG2
Thr T8.0%
ACU62
ACC115
ACA125
ACG1
Ala A7.1%
GCU77
GCC118
GCA73
GCG3
Tyr Y3.0%
UAU59
UAC56
His H2.8%
CAU46
CAC59
Gln Q2.7%
CAA99
CAG3
Asn N3.8%
AAU53
AAC91
Lys K2.2%
AAA83
AAG0
Asp D1.8%
GAU33
GAC37
Glu E2.6%
GAA91
GAG7
Cys C0.7%
UGU10
UGC15
Trp W3.2%
UGA111
UGG10
Arg R1.9%
CGU14
CGC13
CGA44
CGG1
Gly G5.9%
GGU37
GGC73
GGA99
GGG16
Stop 0.3%
UAA8
UAG2
AGA0
AGG0
Genome map
38 annotated features in NC_003137.1Hover, 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 (39.9%, 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 | 70 | 70 bp | + | – |
| 12S rRNA | Ribosomal RNA | 71 | 1,022 | 952 bp | + | 44.0% |
| tRNA-Val | Transfer RNA | 1,023 | 1,094 | 72 bp | + | – |
| 16S rRNA | Ribosomal RNA | 1,095 | 2,770 | 1,676 bp | + | 37.7% |
| tRNA-Leu (UUR) | Transfer RNA | 2,771 | 2,844 | 74 bp | + | – |
| ND1 | Protein-coding gene | 2,845 | 3,820 | 976 bp | + | 42.9% |
| tRNA-Ile | Transfer RNA | 3,821 | 3,893 | 73 bp | + | – |
| tRNA-Gln | Transfer RNA | 3,891 | 3,961 | 71 bp | − | – |
| tRNA-Met | Transfer RNA | 3,962 | 4,030 | 69 bp | + | – |
| ND2 | Protein-coding gene | 4,031 | 5,077 | 1,047 bp | + | 40.8% |
| tRNA-Trp | Transfer RNA | 5,077 | 5,147 | 71 bp | + | – |
| tRNA-Ala | Transfer RNA | 5,149 | 5,217 | 69 bp | − | – |
| tRNA-Asn | Transfer RNA | 5,218 | 5,290 | 73 bp | − | – |
| tRNA-Cys | Transfer RNA | 5,324 | 5,389 | 66 bp | − | – |
| tRNA-Tyr | Transfer RNA | 5,391 | 5,460 | 70 bp | − | – |
| COX1 | Protein-coding gene | 5,462 | 7,018 | 1,557 bp | + | 39.9% |
| tRNA-Ser (UCN) | Transfer RNA | 7,019 | 7,089 | 71 bp | − | – |
| tRNA-Asp | Transfer RNA | 7,094 | 7,168 | 75 bp | + | – |
| COX2 | Protein-coding gene | 7,169 | 7,859 | 691 bp | + | 37.3% |
| tRNA-Lys | Transfer RNA | 7,860 | 7,933 | 74 bp | + | – |
| ATP8 | Protein-coding gene | 7,935 | 8,102 | 168 bp | + | 33.3% |
| ATP6 | Protein-coding gene | 8,093 | 8,776 | 684 bp | + | 36.1% |
| COX3 | Protein-coding gene | 8,776 | 9,561 | 786 bp | + | 42.2% |
| tRNA-Gly | Transfer RNA | 9,564 | 9,633 | 70 bp | + | – |
| ND3 | Protein-coding gene | 9,634 | 9,984 | 351 bp | + | 43.0% |
| tRNA-Arg | Transfer RNA | 9,978 | 10,051 | 74 bp | + | – |
| ND4L | Protein-coding gene | 10,052 | 10,348 | 297 bp | + | 41.4% |
| ND4 | Protein-coding gene | 10,342 | 11,722 | 1,381 bp | + | 39.8% |
| tRNA-His | Transfer RNA | 11,723 | 11,791 | 69 bp | + | – |
| tRNA-Ser (AGY) | Transfer RNA | 11,794 | 11,855 | 62 bp | + | – |
| tRNA-Leu (CUN) | Transfer RNA | 11,859 | 11,931 | 73 bp | + | – |
| ND5 | Protein-coding gene | 11,932 | 13,761 | 1,830 bp | + | 41.2% |
| ND6 | Protein-coding gene | 13,758 | 14,267 | 510 bp | − | 39.8% |
| tRNA-Glu | Transfer RNA | 14,277 | 14,349 | 73 bp | − | – |
| CYTB | Protein-coding gene | 14,353 | 15,498 | 1,146 bp | + | 43.1% |
| tRNA-Thr | Transfer RNA | 15,498 | 15,569 | 72 bp | + | – |
| tRNA-Pro | Transfer RNA | 15,572 | 15,640 | 69 bp | − | – |
| D-loop | Control region | 15,641 | 16,708 | 1,068 bp | – | 34.4% |