Ameiurus nebulosus
Brown bullhead
GC content
44.08%
Whole genome
Non-coding
955 bp
D-loop 893 bp
Where Brown bullhead sits among 2,335 species
Whole-genome GC content against maximum lifespan. Brown bullhead has the 1,425th longest lifespan of them.
- This species
- Other ray-finned fishes
- Other classes
Base composition
Whole genome16,513 bp
- GC skew (G − C) / (G + C)
- −0.264
- AT skew (A − T) / (A + T)
- +0.039
About this record
- Lifespan source
- FishBase v26.06
- Based on
- an observed animal, origin not stated
- 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 genome16,513 bp
Protein-coding11,381 bp
12S rRNA960 bp
16S rRNA1,662 bp
All tRNA1,555 bp
D-loop893 bp
Genes and regions
Select a column to sort; select a gene to compare it across species| Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| ND1NADH dehydrogenase subunit 1 | 975 bp | 44.31% | −0.343 | +0.002 | |||||
| ND2NADH dehydrogenase subunit 2 | 1,045 bp | 46.12% | −0.448 | +0.091 | |||||
| COX1Cytochrome c oxidase subunit I | 1,551 bp | 44.55% | −0.166 | −0.086 | |||||
| COX2Cytochrome c oxidase subunit II | 691 bp | 43.85% | −0.188 | −0.041 | |||||
| ATP8ATP synthase F0 subunit 8 | 168 bp | 40.48% | −0.441 | +0.220 | |||||
| ATP6ATP synthase F0 subunit 6 | 684 bp | 44.30% | −0.406 | +0.029 | |||||
| COX3Cytochrome c oxidase subunit III | 784 bp | 46.30% | −0.251 | −0.069 | |||||
| ND3NADH dehydrogenase subunit 3 | 349 bp | 38.40% | −0.284 | −0.135 | |||||
| ND4LNADH dehydrogenase subunit 4L | 297 bp | 48.82% | −0.338 | −0.092 | |||||
| ND4NADH dehydrogenase subunit 4 | 1,381 bp | 44.24% | −0.306 | −0.036 | |||||
| ND5NADH dehydrogenase subunit 5 | 1,824 bp | 41.23% | −0.330 | −0.013 | |||||
| ND6NADH dehydrogenase subunit 6 | 516 bp | 49.61% | −0.547 | +0.485 | |||||
| CYTBCytochrome b | 1,138 bp | 44.46% | −0.364 | −0.044 | |||||
| 12S rRNA12S ribosomal RNA | 960 bp | 47.60% | −0.116 | +0.173 | |||||
| 16S rRNA16S ribosomal RNA | 1,662 bp | 45.49% | −0.103 | +0.227 | |||||
| D-loopControl region (D-loop) | 893 bp | 35.50% | −0.199 | −0.010 |
Codon usage
Counts per codon, darker is more frequent3,799 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).
Phe F5.9%
UUU129
UUC94
Leu L16.7%
UUA121
UUG27
CUU124
CUC109
CUA197
CUG56
Ile I7.7%
AUU187
AUC104
Met M4.6%
AUA112
AUG62
Val V5.9%
GUU60
GUC43
GUA89
GUG31
Ser S6.0%
UCU48
UCC67
UCA62
UCG8
AGU13
AGC30
Pro P5.6%
CCU33
CCC97
CCA69
CCG14
Thr T7.9%
ACU57
ACC118
ACA109
ACG15
Ala A9.0%
GCU48
GCC172
GCA102
GCG19
Tyr Y3.0%
UAU62
UAC52
His H2.9%
CAU36
CAC73
Gln Q2.6%
CAA85
CAG14
Asn N3.3%
AAU58
AAC66
Lys K2.1%
AAA70
AAG9
Asp D2.0%
GAU32
GAC45
Glu E2.6%
GAA78
GAG20
Cys C0.7%
UGU10
UGC17
Trp W3.2%
UGA105
UGG16
Arg R1.9%
CGU8
CGC15
CGA37
CGG13
Gly G6.4%
GGU34
GGC76
GGA84
GGG51
Stop 0.2%
UAA5
UAG2
AGA0
AGG0
Genome map
38 annotated features in NC_042499.1Hover, 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 (44.1%, 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 | 1,030 | 960 bp | + | 47.6% |
| tRNA-Val | Transfer RNA | 1,031 | 1,102 | 72 bp | + | – |
| 16S rRNA | Ribosomal RNA | 1,103 | 2,764 | 1,662 bp | + | 45.5% |
| tRNA-Leu (UUR) | Transfer RNA | 2,765 | 2,839 | 75 bp | + | – |
| ND1 | Protein-coding gene | 2,840 | 3,814 | 975 bp | + | 44.3% |
| tRNA-Ile | Transfer RNA | 3,816 | 3,887 | 72 bp | + | – |
| tRNA-Gln | Transfer RNA | 3,887 | 3,957 | 71 bp | − | – |
| tRNA-Met | Transfer RNA | 3,957 | 4,026 | 70 bp | + | – |
| ND2 | Protein-coding gene | 4,027 | 5,071 | 1,045 bp | + | 46.1% |
| tRNA-Trp | Transfer RNA | 5,072 | 5,142 | 71 bp | + | – |
| tRNA-Ala | Transfer RNA | 5,145 | 5,213 | 69 bp | − | – |
| tRNA-Asn | Transfer RNA | 5,215 | 5,287 | 73 bp | − | – |
| tRNA-Cys | Transfer RNA | 5,318 | 5,383 | 66 bp | − | – |
| tRNA-Tyr | Transfer RNA | 5,386 | 5,455 | 70 bp | − | – |
| COX1 | Protein-coding gene | 5,457 | 7,007 | 1,551 bp | + | 44.6% |
| tRNA-Ser (UCN) | Transfer RNA | 7,008 | 7,078 | 71 bp | − | – |
| tRNA-Asp | Transfer RNA | 7,083 | 7,155 | 73 bp | + | – |
| COX2 | Protein-coding gene | 7,170 | 7,860 | 691 bp | + | 43.9% |
| tRNA-Lys | Transfer RNA | 7,861 | 7,934 | 74 bp | + | – |
| ATP8 | Protein-coding gene | 7,936 | 8,103 | 168 bp | + | 40.5% |
| ATP6 | Protein-coding gene | 8,094 | 8,777 | 684 bp | + | 44.3% |
| COX3 | Protein-coding gene | 8,777 | 9,560 | 784 bp | + | 46.3% |
| tRNA-Gly | Transfer RNA | 9,561 | 9,632 | 72 bp | + | – |
| ND3 | Protein-coding gene | 9,633 | 9,981 | 349 bp | + | 38.4% |
| tRNA-Arg | Transfer RNA | 9,982 | 10,051 | 70 bp | + | – |
| ND4L | Protein-coding gene | 10,052 | 10,348 | 297 bp | + | 48.8% |
| ND4 | Protein-coding gene | 10,342 | 11,722 | 1,381 bp | + | 44.2% |
| tRNA-His | Transfer RNA | 11,723 | 11,792 | 70 bp | + | – |
| tRNA-Ser (AGY) | Transfer RNA | 11,795 | 11,859 | 65 bp | + | – |
| tRNA-Leu (CUN) | Transfer RNA | 11,863 | 11,935 | 73 bp | − | – |
| ND5 | Protein-coding gene | 11,936 | 13,759 | 1,824 bp | + | 41.2% |
| ND6 | Protein-coding gene | 13,756 | 14,271 | 516 bp | − | 49.6% |
| tRNA-Glu | Transfer RNA | 14,272 | 14,340 | 69 bp | − | – |
| CYTB | Protein-coding gene | 14,342 | 15,479 | 1,138 bp | + | 44.5% |
| tRNA-Thr | Transfer RNA | 15,480 | 15,551 | 72 bp | + | – |
| tRNA-Pro | Transfer RNA | 15,550 | 15,620 | 71 bp | − | – |
| D-loop | Control region | 15,621 | 16,513 | 893 bp | – | 35.5% |