MitoAge

Alligator mississippiensis

American alligator

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Maximum lifespan
77 yr
AnAge record
mtDNA size
16,646 bp
RefSeq NC_001922.1
GC content
43.03%
Whole genome
Non-coding
1,119 bp
D-loop 988 bp

Where American alligator sits among 2,335 species

Whole-genome GC content against maximum lifespan. American alligator has the 54th longest lifespan of them.

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

Base composition

Whole genome16,646 bp
GC skew (G − C) / (G + C)
−0.371
AT skew (A − T) / (A + T)
+0.097

Life history

Maximum lifespan
77 years
Adult weight
150 kg
Basal metabolic rate
0.154 W
Body temperature
22.2 °C
Female sexual maturity
12 years
Male sexual maturity
12 years

Lifespan from AnAge · AnAge record · other traits from AnAge Build 15 (HAGRID 03244)

About this record

Lifespan source
AnAge build 15
Based on
an animal in captivity
Data quality
high, large 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 genome16,646 bp
Protein-coding11,381 bp
12S rRNA976 bp
16S rRNA1,590 bp
All tRNA1,589 bp
D-loop988 bp

Genes and regions

Select a column to sort; select a gene to compare it across species
Composition
ND1NADH dehydrogenase subunit 1966 bp27.8%27.8%13.7%30.6%44.31%−0.3830.000
ND2NADH dehydrogenase subunit 21,062 bp33.1%27.2%9.6%30.1%39.74%−0.517+0.097
COX1Cytochrome c oxidase subunit I1,555 bp28.5%27.1%15.8%28.6%44.44%−0.288+0.025
COX2Cytochrome c oxidase subunit II688 bp31.8%24.7%12.4%31.1%43.46%−0.431+0.126
ATP8ATP synthase F0 subunit 8162 bp34.6%24.1%8.0%33.3%41.36%−0.612+0.179
ATP6ATP synthase F0 subunit 6678 bp30.1%26.4%9.7%33.8%43.51%−0.553+0.065
COX3Cytochrome c oxidase subunit III784 bp27.3%26.5%14.7%31.5%46.17%−0.365+0.014
ND3NADH dehydrogenase subunit 3348 bp28.2%27.9%12.6%31.3%43.97%−0.425+0.005
ND4LNADH dehydrogenase subunit 4L294 bp26.5%28.9%13.6%31.0%44.56%−0.389−0.043
ND4NADH dehydrogenase subunit 41,374 bp30.1%26.6%11.3%32.0%43.30%−0.479+0.060
ND5NADH dehydrogenase subunit 51,812 bp31.2%26.2%11.4%31.2%42.55%−0.466+0.087
ND6NADH dehydrogenase subunit 6516 bp40.7%15.1%8.7%35.5%44.19%−0.605+0.458
CYTBCytochrome b1,159 bp28.7%27.2%12.5%31.6%44.09%−0.432+0.028
12S rRNA12S ribosomal RNA976 bp32.5%19.5%20.9%27.2%48.05%−0.130+0.250
16S rRNA16S ribosomal RNA1,590 bp36.3%21.6%16.7%25.4%42.08%−0.208+0.253
D-loopControl region (D-loop)988 bp30.7%36.5%11.3%21.5%32.79%−0.309−0.087

Codon usage

Counts per codon, darker is more frequent

3,798 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F6.4%
UUU101
UUC142
Leu L16.9%
UUA109
UUG12
CUU83
CUC142
CUA259
CUG36
Ile I8.0%
AUU160
AUC142
Met M5.3%
AUA162
AUG40
Val V4.7%
GUU37
GUC43
GUA74
GUG24
Ser S7.6%
UCU46
UCC74
UCA92
UCG14
AGU17
AGC44
Pro P5.7%
CCU28
CCC83
CCA96
CCG10
Thr T9.4%
ACU54
ACC158
ACA133
ACG11
Ala A7.3%
GCU51
GCC114
GCA103
GCG11
Tyr Y2.9%
UAU44
UAC66
His H2.7%
CAU21
CAC81
Gln Q2.4%
CAA82
CAG11
Asn N3.4%
AAU25
AAC103
Lys K2.4%
AAA85
AAG7
Asp D1.8%
GAU14
GAC54
Glu E2.3%
GAA73
GAG13
Cys C0.7%
UGU12
UGC16
Trp W2.8%
UGA88
UGG17
Arg R1.8%
CGU7
CGC20
CGA38
CGG4
Gly G5.3%
GGU13
GGC60
GGA92
GGG38
Stop 0.2%
UAA7
UAG1
AGA0
AGG1

Genome map

38 annotated features in NC_001922.1

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 (43.0%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).
All 38 features as a table
FeatureTypeStartEndLengthStrandGC
12S rRNARibosomal RNA1976976 bp+48.1%
tRNA-ValTransfer RNA9771,04468 bp+–
16S rRNARibosomal RNA1,0462,6351,590 bp+42.1%
tRNA-Leu (UUR)Transfer RNA2,6362,71075 bp+–
ND1Protein-coding gene2,7113,676966 bp+44.3%
tRNA-IleTransfer RNA3,6743,74471 bp+–
tRNA-GlnTransfer RNA3,7463,81671 bp−–
tRNA-MetTransfer RNA3,8163,88772 bp+–
ND2Protein-coding gene3,8894,9501,062 bp+39.7%
tRNA-TrpTransfer RNA4,9505,02576 bp+–
tRNA-AlaTransfer RNA5,0305,09566 bp−–
tRNA-AsnTransfer RNA5,0985,17073 bp−–
tRNA-CysTransfer RNA5,1755,24066 bp−–
tRNA-TyrTransfer RNA5,2415,31777 bp−–
COX1Protein-coding gene5,3146,8681,555 bp+44.4%
tRNA-Ser (UCN)Transfer RNA6,8726,94574 bp−–
tRNA-AspTransfer RNA6,9487,02174 bp+–
COX2Protein-coding gene7,0217,708688 bp+43.5%
tRNA-LysTransfer RNA7,7097,78678 bp+–
ATP8Protein-coding gene7,7897,950162 bp+41.4%
ATP6Protein-coding gene7,9478,624678 bp+43.5%
COX3Protein-coding gene8,6249,407784 bp+46.2%
tRNA-GlyTransfer RNA9,4089,48073 bp+–
ND3Protein-coding gene9,4819,828348 bp+44.0%
tRNA-ArgTransfer RNA9,8589,92770 bp+–
ND4LProtein-coding gene9,93010,223294 bp+44.6%
ND4Protein-coding gene10,21711,5901,374 bp+43.3%
tRNA-Ser (AGY)Transfer RNA11,61411,68269 bp+–
tRNA-HisTransfer RNA11,68811,75568 bp+–
tRNA-Leu (CUN)Transfer RNA11,76411,83673 bp+–
ND5Protein-coding gene11,83913,6501,812 bp+42.6%
ND6Protein-coding gene13,64614,161516 bp−44.2%
tRNA-GluTransfer RNA14,16214,22968 bp−–
CYTBProtein-coding gene14,23315,3911,159 bp+44.1%
tRNA-ThrTransfer RNA15,42315,49674 bp+–
tRNA-ProTransfer RNA15,49515,58086 bp−–
tRNA-PheTransfer RNA15,58915,65870 bp+–
D-loopControl region15,65916,646988 bp–32.8%

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