Pyxicephalus adspersus

African bullfrog

Maximum lifespan

45 yr

AnAge record

mtDNA size

24,317 bp

RefSeq NC_044480.1

GC content

42.31%

Whole genome

Non-coding

4,059 bp

D-loop 2,604 bp

Where African bullfrog sits among 2,335 species

Whole-genome GC content against maximum lifespan. African bullfrog has the 200th longest lifespan of them.

This species
Other amphibians
Other classes

Plot other mtDNA features with this species highlighted

Base composition

Whole genome24,317 bp

GC skew (G − C) / (G + C): −0.314
AT skew (A − T) / (A + T): +0.022

Life history

Maximum lifespan: 45 years

Lifespan from AnAge · AnAge record

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: New in build 2
In the database since: 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 RefSeq

Whole genome24,317 bp

Protein-coding13,227 bp

12S rRNA932 bp

16S rRNA1,578 bp

All tRNA2,020 bp

D-loop2,604 bp

Genes and regions

Select a column to sort; select a gene to compare it across species

Base composition of Pyxicephalus adspersus genes

ND1NADH dehydrogenase subunit 1	963 bp	25.2%	33.2%	11.8%	29.7%	41.54%	−0.430	−0.137
ND2NADH dehydrogenase subunit 2	1,036 bp	29.0%	28.7%	10.8%	31.6%	42.38%	−0.490	+0.005
COX1Cytochrome c oxidase subunit I	1,554 bp	26.3%	29.5%	16.6%	27.5%	44.14%	−0.248	−0.058
COX2Cytochrome c oxidase subunit II	688 bp	30.4%	28.1%	14.0%	27.6%	41.57%	−0.329	+0.040
ATP8ATP synthase F0 subunit 8	165 bp	31.5%	33.3%	7.9%	27.3%	35.15%	−0.552	−0.028
ATP6ATP synthase F0 subunit 6	682 bp	26.8%	31.1%	9.8%	32.3%	42.08%	−0.533	−0.073
COX3Cytochrome c oxidase subunit III	785 bp	24.7%	29.8%	17.1%	28.4%	45.48%	−0.249	−0.093
ND3NADH dehydrogenase subunit 3	340 bp	20.3%	33.8%	14.1%	31.8%	45.88%	−0.385	−0.250
ND4LNADH dehydrogenase subunit 4L	288 bp	23.6%	29.2%	11.8%	35.4%	47.22%	−0.500	−0.105
ND4NADH dehydrogenase subunit 4	1,363 bp	26.9%	28.7%	11.4%	33.1%	44.46%	−0.488	−0.033
ND5NADH dehydrogenase subunit 5	1,806 bp	27.2%	31.5%	13.0%	28.3%	41.36%	−0.371	−0.073
ND6NADH dehydrogenase subunit 6	486 bp	37.4%	17.5%	10.7%	34.4%	45.06%	−0.525	+0.363
CYTBCytochrome b	1,152 bp	25.8%	27.3%	14.4%	32.5%	46.88%	−0.385	−0.029
12S rRNA12S ribosomal RNA	932 bp	32.1%	23.6%	18.7%	25.6%	44.31%	−0.157	+0.152
16S rRNA16S ribosomal RNA	1,578 bp	34.0%	25.1%	17.9%	23.1%	40.94%	−0.127	+0.150
D-loopControl region (D-loop)	2,604 bp	32.0%	33.6%	12.4%	21.9%	34.33%	−0.275	−0.025

Codon usage

Counts per codon, darker is more frequent

Gene

3,767 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F7.2%

UUU149

UUC122

Leu L16.6%

UUA107

UUG29

CUU141

CUC153

CUA147

CUG47

Ile I8.4%

AUU166

AUC152

Met M4.2%

AUA116

AUG42

Val V4.6%

GUU51

GUC50

GUA51

GUG21

Ser S7.4%

UCU67

UCC83

UCA81

UCG4

AGU13

AGC30

Pro P5.5%

CCU33

CCC72

CCA92

CCG10

Thr T8.4%

ACU86

ACC116

ACA106

ACG10

Ala A8.2%

GCU74

GCC125

GCA97

GCG13

Tyr Y2.9%

UAU51

UAC59

His H2.4%

CAU22

CAC70

Gln Q2.3%

CAA79

CAG7

Asn N3.9%

AAU56

AAC90

Lys K2.3%

AAA77

AAG11

Asp D1.9%

GAU17

GAC53

Glu E2.4%

GAA72

GAG18

Cys C0.8%

UGU11

UGC20

Trp W2.8%

UGA87

UGG18

Arg R1.9%

CGU9

CGC30

CGA31

CGG2

Gly G5.7%

GGU37

GGC79

GGA59

GGG39

Stop 0.2%

UAA3

UAG1

AGA0

AGG3

Genome map

50 annotated features in NC_044480.1

Hover, tap or tab to a feature to see its position, length, strand and GC content. Genes and rRNAs open their own pages.

Protein-coding15
rRNA4
tRNA29
D-loop2

Outer ring: + strand, arrows run clockwise. Inner ring: − strand.
Middle ring: GC% of each gene against the whole genome (42.3%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 50 features as a table

Annotated features of Pyxicephalus adspersus (NC_044480.1)
Feature	Type	Start	End	Length	Strand	GC
tRNA-Leu	Transfer RNA	1	72	72 bp	+	–
tRNA-Thr	Transfer RNA	74	143	70 bp	+	–
tRNA-Pro	Transfer RNA	144	212	69 bp	−	–
tRNA-Phe	Transfer RNA	214	283	70 bp	+	–
12S rRNA	Ribosomal RNA	284	1,215	932 bp	+	44.3%
tRNA-Val	Transfer RNA	1,216	1,283	68 bp	+	–
16S rRNA	Ribosomal RNA	1,284	2,861	1,578 bp	+	40.9%
tRNA-Leu	Transfer RNA	2,862	2,934	73 bp	+	–
ND1	Protein-coding gene	2,935	3,897	963 bp	+	41.5%
tRNA-Gln	Transfer RNA	3,958	4,028	71 bp	−	–
tRNA-Met	Transfer RNA	4,028	4,096	69 bp	+	–
ND2	Protein-coding gene	4,097	5,132	1,036 bp	+	42.4%
tRNA-Trp	Transfer RNA	5,133	5,201	69 bp	+	–
tRNA-Ala	Transfer RNA	5,202	5,271	70 bp	−	–
tRNA-Asn	Transfer RNA	5,272	5,344	73 bp	−	–
tRNA-Tyr	Transfer RNA	5,384	5,450	67 bp	−	–
COX1	Protein-coding gene	5,452	7,005	1,554 bp	+	44.1%
tRNA-Ser (UCN)	Transfer RNA	6,997	7,067	71 bp	−	–
COX2	Protein-coding gene	7,131	7,818	688 bp	+	41.6%
ATP8	Protein-coding gene	7,880	8,044	165 bp	+	35.2%
ATP6	Protein-coding gene	8,035	8,716	682 bp	+	42.1%
COX3	Protein-coding gene	8,717	9,501	785 bp	+	45.5%
tRNA-Gly	Transfer RNA	9,502	9,569	68 bp	+	–
ND4L	Protein-coding gene	9,720	10,007	288 bp	+	47.2%
ND4	Protein-coding gene	10,001	11,363	1,363 bp	+	44.5%
tRNA-His	Transfer RNA	11,364	11,430	67 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	11,431	11,497	67 bp	+	–
ND6	Protein-coding gene	11,641	12,126	486 bp	−	45.1%
tRNA-Glu	Transfer RNA	12,127	12,196	70 bp	+	–
CYTB	Protein-coding gene	12,198	13,349	1,152 bp	+	46.9%
D-loop	Control region	13,340	14,646	1,307 bp	–	34.3%
tRNA-Leu	Transfer RNA	14,647	14,718	72 bp	+	–
tRNA-Thr	Transfer RNA	14,720	14,789	70 bp	+	–
tRNA-Pro	Transfer RNA	14,790	14,858	69 bp	−	–
tRNA-Phe	Transfer RNA	14,860	14,929	70 bp	+	–
12S rRNA	Ribosomal RNA	14,930	15,861	932 bp	+	44.3%
tRNA-Val	Transfer RNA	15,862	15,929	68 bp	+	–
16S rRNA	Ribosomal RNA	15,930	17,507	1,578 bp	+	40.9%
tRNA-Leu	Transfer RNA	17,508	17,580	73 bp	+	–
tRNA-Ile	Transfer RNA	17,603	17,673	71 bp	+	–
tRNA-Cys	Transfer RNA	17,893	17,957	65 bp	−	–
tRNA-Asp	Transfer RNA	17,967	18,035	69 bp	+	–
tRNA-Lys	Transfer RNA	18,187	18,256	70 bp	+	–
COX3	Protein-coding gene	18,311	19,094	784 bp	+	45.5%
ND3	Protein-coding gene	19,160	19,499	340 bp	+	45.9%
tRNA-Arg	Transfer RNA	19,500	19,568	69 bp	+	–
ND5	Protein-coding gene	19,667	21,472	1,806 bp	+	41.4%
tRNA-Gln	Transfer RNA	21,797	21,867	71 bp	−	–
CYTB	Protein-coding gene	21,869	23,020	1,152 bp	+	46.9%
D-loop	Control region	23,021	24,317	1,297 bp	–	34.3%