Xenopus laevis

African clawed frog

Maximum lifespan

30.3 yr

AnAge record

mtDNA size

17,553 bp

RefSeq NC_001573.1

GC content

36.99%

Whole genome

Non-coding

2,220 bp

D-loop 2,134 bp

Where African clawed frog sits among 2,335 species

Whole-genome GC content against maximum lifespan. African clawed frog has the 431st longest lifespan of them.

This species
Other amphibians
Other classes

Plot other mtDNA features with this species highlighted

Base composition

Whole genome17,553 bp

GC skew (G − C) / (G + C): −0.270
AT skew (A − T) / (A + T): +0.049

Life history

Maximum lifespan: 30.3 years
Adult weight: 130 g
Basal metabolic rate: 0.012 W
Body temperature: 14.9 °C
Female sexual maturity: 183 days
Gestation or incubation: 2 days

Lifespan from AnAge · AnAge record · other traits from AnAge Build 15 (HAGRID 00107)

About this record

Lifespan source: AnAge build 15
Based on: an animal in captivity
Data quality: acceptable, large sample
Licence: Free to use, subject to the Human Ageing Genomic Resources conditions of use
Status: Unchanged since build 1
In the database since: build 1 (2015-07-01)

Every change against the 2015 build is in the changelog download.

Composition by region

Reference (L) strand as deposited in RefSeq

Whole genome17,553 bp

Protein-coding11,352 bp

12S rRNA819 bp

16S rRNA1,631 bp

All tRNA1,535 bp

D-loop2,134 bp

Genes and regions

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

Base composition of Xenopus laevis genes

ND1NADH dehydrogenase subunit 1	972 bp	31.6%	31.2%	12.3%	24.9%	37.24%	−0.337	+0.007
ND2NADH dehydrogenase subunit 2	1,038 bp	31.8%	31.1%	10.2%	26.9%	37.09%	−0.449	+0.011
COX1Cytochrome c oxidase subunit I	1,555 bp	28.6%	32.5%	16.5%	22.4%	38.91%	−0.150	−0.065
COX2Cytochrome c oxidase subunit II	688 bp	32.1%	28.8%	14.7%	24.4%	39.10%	−0.249	+0.055
ATP8ATP synthase F0 subunit 8	168 bp	38.1%	25.6%	8.3%	28.0%	36.31%	−0.541	+0.196
ATP6ATP synthase F0 subunit 6	681 bp	30.2%	33.9%	10.4%	25.4%	35.83%	−0.418	−0.057
COX3Cytochrome c oxidase subunit III	781 bp	29.8%	30.2%	15.7%	24.2%	39.95%	−0.212	−0.006
ND3NADH dehydrogenase subunit 3	343 bp	26.2%	33.8%	13.7%	26.2%	39.94%	−0.314	−0.126
ND4LNADH dehydrogenase subunit 4L	297 bp	30.3%	33.0%	12.8%	23.9%	36.70%	−0.303	−0.043
ND4NADH dehydrogenase subunit 4	1,384 bp	32.7%	31.6%	11.1%	24.6%	35.69%	−0.377	+0.016
ND5NADH dehydrogenase subunit 5	1,815 bp	33.2%	32.1%	11.5%	23.3%	34.71%	−0.340	+0.018
ND6NADH dehydrogenase subunit 6	513 bp	42.7%	19.9%	9.4%	28.1%	37.43%	−0.500	+0.364
CYTBCytochrome b	1,140 bp	29.5%	32.5%	12.6%	25.4%	37.98%	−0.335	−0.050
12S rRNA12S ribosomal RNA	819 bp	32.5%	22.1%	19.9%	25.5%	45.42%	−0.124	+0.190
16S rRNA16S ribosomal RNA	1,631 bp	36.4%	25.0%	17.7%	21.0%	38.69%	−0.087	+0.186
D-loopControl region (D-loop)	2,134 bp	39.3%	33.4%	9.4%	17.9%	27.32%	−0.310	+0.082

Codon usage

Counts per codon, darker is more frequent

Gene

3,790 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F6.0%

UUU125

UUC103

Leu L15.9%

UUA217

UUG20

CUU159

CUC54

CUA141

CUG10

Ile I8.9%

AUU228

AUC110

Met M5.2%

AUA161

AUG35

Val V4.7%

GUU62

GUC25

GUA75

GUG17

Ser S7.9%

UCU66

UCC44

UCA123

UCG11

AGU15

AGC42

Pro P5.4%

CCU52

CCC20

CCA121

CCG11

Thr T8.1%

ACU83

ACC71

ACA145

ACG8

Ala A7.3%

GCU73

GCC83

GCA114

GCG6

Tyr Y3.1%

UAU60

UAC57

His H2.5%

CAU40

CAC56

Gln Q2.6%

CAA93

CAG6

Asn N4.0%

AAU70

AAC80

Lys K2.2%

AAA77

AAG8

Asp D2.0%

GAU36

GAC38

Glu E2.6%

GAA83

GAG14

Cys C0.8%

UGU13

UGC18

Trp W3.1%

UGA101

UGG16

Arg R1.7%

CGU10

CGC5

CGA50

CGG1

Gly G5.8%

GGU44

GGC40

GGA113

GGG23

Stop 0.2%

UAA4

UAG3

AGA1

AGG0

Genome map

38 annotated features in NC_001573.1

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

Protein-coding13
rRNA2
tRNA22
D-loop1

Outer ring: + strand, arrows run clockwise. Inner ring: − strand.
Middle ring: GC% of each gene against the whole genome (37.0%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 38 features as a table

Annotated features of Xenopus laevis (NC_001573.1)
Feature	Type	Start	End	Length	Strand	GC
D-loop	Control region	1	2,134	2,134 bp	–	27.3%
tRNA-Phe	Transfer RNA	2,136	2,204	69 bp	+	–
12S rRNA	Ribosomal RNA	2,205	3,023	819 bp	+	45.4%
tRNA-Val	Transfer RNA	3,024	3,092	69 bp	+	–
16S rRNA	Ribosomal RNA	3,093	4,723	1,631 bp	+	38.7%
tRNA-Leu (UUR)	Transfer RNA	4,724	4,798	75 bp	+	–
ND1	Protein-coding gene	4,799	5,770	972 bp	+	37.2%
tRNA-Ile	Transfer RNA	5,770	5,840	71 bp	+	–
tRNA-Gln	Transfer RNA	5,840	5,910	71 bp	−	–
tRNA-Met	Transfer RNA	5,910	5,978	69 bp	+	–
ND2	Protein-coding gene	5,979	7,016	1,038 bp	+	37.1%
tRNA-Trp	Transfer RNA	7,015	7,083	69 bp	+	–
tRNA-Ala	Transfer RNA	7,086	7,154	69 bp	−	–
tRNA-Asn	Transfer RNA	7,156	7,226	71 bp	−	–
tRNA-Cys	Transfer RNA	7,260	7,325	66 bp	−	–
tRNA-Tyr	Transfer RNA	7,325	7,394	70 bp	−	–
COX1	Protein-coding gene	7,397	8,951	1,555 bp	+	38.9%
tRNA-Ser (UCN)	Transfer RNA	8,952	9,022	71 bp	−	–
tRNA-Asp	Transfer RNA	9,038	9,106	69 bp	+	–
COX2	Protein-coding gene	9,109	9,796	688 bp	+	39.1%
tRNA-Lys	Transfer RNA	9,797	9,871	75 bp	+	–
ATP8	Protein-coding gene	9,873	10,040	168 bp	+	36.3%
ATP6	Protein-coding gene	10,031	10,711	681 bp	+	35.8%
COX3	Protein-coding gene	10,711	11,491	781 bp	+	40.0%
tRNA-Gly	Transfer RNA	11,492	11,561	70 bp	+	–
ND3	Protein-coding gene	11,562	11,904	343 bp	+	39.9%
tRNA-Arg	Transfer RNA	11,905	11,973	69 bp	+	–
ND4L	Protein-coding gene	11,974	12,270	297 bp	+	36.7%
ND4	Protein-coding gene	12,264	13,647	1,384 bp	+	35.7%
tRNA-His	Transfer RNA	13,648	13,715	68 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	13,716	13,780	65 bp	+	–
tRNA-Leu (CUN)	Transfer RNA	13,781	13,854	74 bp	+	–
ND5	Protein-coding gene	13,855	15,669	1,815 bp	+	34.7%
ND6	Protein-coding gene	15,665	16,177	513 bp	−	37.4%
tRNA-Glu	Transfer RNA	16,178	16,246	69 bp	−	–
CYTB	Protein-coding gene	16,249	17,388	1,140 bp	+	38.0%
tRNA-Thr	Transfer RNA	17,388	17,457	70 bp	+	–
tRNA-Pro	Transfer RNA	17,485	17,553	69 bp	−	–