MitoAge

Apalone spinifera

Spiny softshell turtle

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Maximum lifespan
25.2 yr
AnAge record
mtDNA size
16,749 bp
RefSeq NC_021371.1
GC content
39.21%
Whole genome
Non-coding
1,311 bp
D-loop 1,234 bp

Where Spiny softshell turtle sits among 2,335 species

Whole-genome GC content against maximum lifespan. Spiny softshell turtle has the 620th longest lifespan of them.

10203040501 yr10 yr100 yrMaximum lifespan, log scaleGC %Spiny softshell turtle
  • This species
  • Other reptiles
  • Other classes
Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,749 bp
GC skew (G − C) / (G + C)
−0.383
AT skew (A − T) / (A + T)
+0.169

Life history

Maximum lifespan
25.2 years
Adult weight
4.8 kg
Female sexual maturity
9 years
Male sexual maturity
9 years

Lifespan from AnAge · AnAge record · other traits from AnAge Build 15 (HAGRID 03788)

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
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 RefSeq
Whole genome16,749 bp
Protein-coding11,317 bp
12S rRNA970 bp
16S rRNA1,614 bp
All tRNA1,545 bp
D-loop1,234 bp

Genes and regions

Select a column to sort; select a gene to compare it across species
Composition
ND1NADH dehydrogenase subunit 1971 bp32.4%26.7%11.0%29.9%40.89%−0.461+0.098
ND2NADH dehydrogenase subunit 21,039 bp38.3%23.8%8.2%29.7%37.92%−0.569+0.234
COX1Cytochrome c oxidase subunit I1,545 bp29.2%28.0%16.9%26.0%42.85%−0.211+0.022
COX2Cytochrome c oxidase subunit II687 bp36.4%25.0%12.5%26.1%38.57%−0.351+0.185
ATP8ATP synthase F0 subunit 8165 bp42.4%24.2%6.1%27.3%33.33%−0.636+0.273
ATP6ATP synthase F0 subunit 6684 bp34.9%23.7%9.4%32.0%41.37%−0.548+0.192
COX3Cytochrome c oxidase subunit III784 bp31.6%25.0%14.9%28.4%43.37%−0.312+0.117
ND3NADH dehydrogenase subunit 3349 bp34.4%27.5%9.7%28.4%38.11%−0.489+0.111
ND4LNADH dehydrogenase subunit 4L297 bp32.7%26.6%8.4%32.3%40.74%−0.587+0.102
ND4NADH dehydrogenase subunit 41,381 bp36.4%24.5%9.1%30.1%39.18%−0.534+0.195
ND5NADH dehydrogenase subunit 51,779 bp35.2%24.1%9.9%30.8%40.70%−0.514+0.189
ND6NADH dehydrogenase subunit 6528 bp48.5%13.1%6.3%32.2%38.45%−0.675+0.575
CYTBCytochrome b1,131 bp32.1%26.8%11.9%29.2%41.11%−0.419+0.090
12S rRNA12S ribosomal RNA970 bp38.5%21.2%16.6%23.7%40.31%−0.176+0.288
16S rRNA16S ribosomal RNA1,614 bp41.1%20.9%15.7%22.2%37.98%−0.171+0.325
D-loopControl region (D-loop)1,234 bp33.2%36.1%9.2%21.4%30.63%−0.397−0.042

Codon usage

Counts per codon, darker is more frequent

3,778 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F5.6%
UUU72
UUC141
Leu L15.9%
UUA124
UUG26
CUU47
CUC67
CUA312
CUG26
Ile I8.7%
AUU115
AUC213
Met M6.5%
AUA206
AUG40
Val V4.1%
GUU30
GUC26
GUA79
GUG19
Ser S7.5%
UCU29
UCC58
UCA143
UCG5
AGU7
AGC40
Pro P5.5%
CCU19
CCC40
CCA145
CCG3
Thr T9.5%
ACU44
ACC135
ACA176
ACG5
Ala A6.4%
GCU40
GCC103
GCA94
GCG4
Tyr Y3.1%
UAU49
UAC70
His H2.7%
CAU32
CAC71
Gln Q2.8%
CAA103
CAG2
Asn N4.3%
AAU36
AAC127
Lys K2.3%
AAA84
AAG3
Asp D1.6%
GAU21
GAC38
Glu E2.3%
GAA81
GAG5
Cys C0.8%
UGU14
UGC15
Trp W2.9%
UGA98
UGG10
Arg R1.8%
CGU6
CGC11
CGA50
CGG2
Gly G5.5%
GGU39
GGC53
GGA84
GGG33
Stop 0.2%
UAA6
UAG0
AGA2
AGG0

Genome map

38 annotated features in NC_021371.1

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 (39.2%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).
All 38 features as a table
FeatureTypeStartEndLengthStrandGC
tRNA-PheTransfer RNA16969 bp+–
12S rRNARibosomal RNA701,039970 bp+40.3%
tRNA-ValTransfer RNA1,0401,10869 bp+–
16S rRNARibosomal RNA1,1092,7221,614 bp+38.0%
tRNA-Leu (UUR)Transfer RNA2,7232,79876 bp+–
ND1Protein-coding gene2,7993,769971 bp+40.9%
tRNA-IleTransfer RNA3,7703,84071 bp+–
tRNA-GlnTransfer RNA3,8403,91071 bp−–
tRNA-MetTransfer RNA3,9103,97869 bp+–
ND2Protein-coding gene3,9795,0171,039 bp+37.9%
tRNA-TrpTransfer RNA5,0185,09174 bp+–
tRNA-AlaTransfer RNA5,1055,17470 bp−–
tRNA-AsnTransfer RNA5,1765,24974 bp−–
tRNA-CysTransfer RNA5,2805,34667 bp−–
tRNA-TyrTransfer RNA5,3475,41468 bp−–
COX1Protein-coding gene5,4166,9601,545 bp+42.9%
tRNA-Ser (UCN)Transfer RNA6,9567,02671 bp−–
tRNA-AspTransfer RNA7,0277,09569 bp+–
COX2Protein-coding gene7,0967,782687 bp+38.6%
tRNA-LysTransfer RNA7,7847,85875 bp+–
ATP8Protein-coding gene7,8608,024165 bp+33.3%
ATP6Protein-coding gene8,0158,698684 bp+41.4%
COX3Protein-coding gene8,6989,481784 bp+43.4%
tRNA-GlyTransfer RNA9,4829,55069 bp+–
ND3Protein-coding gene9,5519,900350 bp+38.1%
tRNA-ArgTransfer RNA9,9019,97171 bp+–
ND4LProtein-coding gene9,97210,268297 bp+40.7%
ND4Protein-coding gene10,26211,6421,381 bp+39.2%
tRNA-HisTransfer RNA11,64311,71270 bp+–
tRNA-Ser (AGY)Transfer RNA11,71311,77462 bp+–
tRNA-Leu (CUN)Transfer RNA11,77411,84572 bp+–
ND5Protein-coding gene11,84613,6241,779 bp+40.7%
ND6Protein-coding gene13,62014,147528 bp−38.5%
tRNA-GluTransfer RNA14,14514,21268 bp−–
CYTBProtein-coding gene14,21615,3461,131 bp+41.1%
tRNA-ThrTransfer RNA15,36115,43474 bp+–
tRNA-ProTransfer RNA15,44715,51569 bp−–
D-loopControl region15,51616,7491,234 bp–30.6%

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