MitoAge

Coluber constrictor

Eastern racer, or Northern black racer

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Maximum lifespan
10 yr
AnAge record
mtDNA size
17,142 bp
RefSeq NC_071936.1
GC content
38.95%
Whole genome
Non-coding
2,087 bp
D-loop 2,033 bp

Where Eastern racer, or Northern black racer sits among 2,335 species

Whole-genome GC content against maximum lifespan. Eastern racer, or Northern black racer has the 1,571st longest lifespan of them.

10203040501 yr10 yr100 yrMaximum lifespan, log scaleGC %Eastern racer, or Northern black racer
  • This species
  • Other reptiles
  • Other classes
Plot other mtDNA features with this species highlighted

Base composition

Whole genome17,142 bp
GC skew (G − C) / (G + C)
−0.382
AT skew (A − T) / (A + T)
+0.160

Life history

Maximum lifespan
10 years
Adult weight
1.6 kg
Male sexual maturity
411 days

Lifespan from AnAge · AnAge record · other traits from AnAge build 15 (HAGRID 03334)

About this record

Lifespan source
AnAge build 15
Based on
an observed animal, origin not stated
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 genome17,142 bp
Protein-coding11,240 bp
12S rRNA927 bp
16S rRNA1,477 bp
All tRNA1,425 bp
D-loop2,033 bp

Genes and regions

Select a column to sort; select a gene to compare it across species
Composition
ND1NADH dehydrogenase subunit 1961 bp36.0%25.7%10.2%28.1%38.29%−0.467+0.167
ND2NADH dehydrogenase subunit 21,032 bp39.1%22.6%7.8%30.4%38.28%−0.590+0.268
COX1Cytochrome c oxidase subunit I1,602 bp30.6%28.2%15.2%26.1%41.26%−0.265+0.041
COX2Cytochrome c oxidase subunit II685 bp35.8%23.6%14.6%26.0%40.58%−0.281+0.204
ATP8ATP synthase F0 subunit 8156 bp46.2%23.7%3.8%26.3%30.13%−0.745+0.321
ATP6ATP synthase F0 subunit 6681 bp37.7%26.9%9.5%25.8%35.39%−0.461+0.168
COX3Cytochrome c oxidase subunit III784 bp31.9%26.8%14.3%27.0%41.33%−0.309+0.087
ND3NADH dehydrogenase subunit 3343 bp34.1%26.5%9.6%29.7%39.36%−0.511+0.125
ND4LNADH dehydrogenase subunit 4L291 bp37.5%31.6%8.9%22.0%30.93%−0.422+0.085
ND4NADH dehydrogenase subunit 41,338 bp36.4%25.8%9.8%28.0%37.82%−0.482+0.171
ND5NADH dehydrogenase subunit 51,770 bp38.5%24.7%9.1%27.7%36.78%−0.505+0.217
ND6NADH dehydrogenase subunit 6504 bp49.2%16.1%5.0%29.8%34.72%−0.714+0.508
CYTBCytochrome b1,114 bp32.1%27.7%10.8%29.4%40.13%−0.463+0.073
12S rRNA12S ribosomal RNA927 bp37.9%19.0%17.2%26.0%43.15%−0.205+0.332
16S rRNA16S ribosomal RNA1,477 bp40.7%21.3%15.6%22.4%38.05%−0.178+0.314
D-loopControl region (D-loop)2,033 bp28.6%32.4%11.0%27.9%38.96%−0.434−0.062

Codon usage

Counts per codon, darker is more frequent

3,752 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F5.4%
UUU92
UUC109
Leu L14.7%
UUA112
UUG19
CUU67
CUC61
CUA283
CUG10
Ile I8.9%
AUU153
AUC182
Met M7.6%
AUA256
AUG31
Val V4.2%
GUU46
GUC22
GUA75
GUG14
Ser S6.9%
UCU38
UCC46
UCA125
UCG7
AGU10
AGC32
Pro P5.2%
CCU20
CCC34
CCA137
CCG3
Thr T11.2%
ACU68
ACC143
ACA206
ACG5
Ala A6.2%
GCU40
GCC84
GCA106
GCG4
Tyr Y2.8%
UAU42
UAC63
His H2.7%
CAU22
CAC80
Gln Q2.6%
CAA89
CAG8
Asn N4.1%
AAU42
AAC110
Lys K2.9%
AAA102
AAG6
Asp D1.6%
GAU23
GAC36
Glu E2.6%
GAA91
GAG5
Cys C0.8%
UGU17
UGC13
Trp W2.6%
UGA89
UGG8
Arg R1.6%
CGU9
CGC7
CGA42
CGG3
Gly G5.3%
GGU35
GGC29
GGA105
GGG28
Stop 0.2%
UAA4
UAG1
AGA2
AGG1

Genome map

39 annotated features in NC_071936.1

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-loop2
  • Outer ring: + strand, arrows run clockwise. Inner ring: − strand.
  • Middle ring: GC% of each gene against the whole genome (39.0%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).
All 39 features as a table
FeatureTypeStartEndLengthStrandGC
tRNA-PheTransfer RNA87063 bp+–
12S rRNARibosomal RNA69995927 bp+43.2%
tRNA-ValTransfer RNA9961,05964 bp+–
16S rRNARibosomal RNA1,0602,5361,477 bp+38.1%
ND1Protein-coding gene2,5403,500961 bp+38.3%
tRNA-IleTransfer RNA3,5013,56868 bp+–
D-loopControl region3,5694,5841,016 bp–39.0%
tRNA-Leu (UUR)Transfer RNA4,5854,65773 bp+–
tRNA-GlnTransfer RNA4,6594,72971 bp−–
tRNA-MetTransfer RNA4,7314,79363 bp+–
ND2Protein-coding gene4,7945,8251,032 bp+38.3%
tRNA-TrpTransfer RNA5,8245,88865 bp+–
tRNA-AlaTransfer RNA5,8915,95565 bp−–
tRNA-AsnTransfer RNA5,9566,02772 bp−–
tRNA-CysTransfer RNA6,0626,12261 bp−–
tRNA-TyrTransfer RNA6,1226,18362 bp−–
COX1Protein-coding gene6,1857,7861,602 bp+41.3%
tRNA-Ser (UCN)Transfer RNA7,7777,84367 bp−–
tRNA-AspTransfer RNA7,8447,90663 bp+–
COX2Protein-coding gene7,9078,591685 bp+40.6%
tRNA-LysTransfer RNA8,5928,65463 bp+–
ATP8Protein-coding gene8,6568,811156 bp+30.1%
ATP6Protein-coding gene8,8029,482681 bp+35.4%
COX3Protein-coding gene9,48210,265784 bp+41.3%
tRNA-GlyTransfer RNA10,26610,32661 bp+–
ND3Protein-coding gene10,32710,669343 bp+39.4%
tRNA-ArgTransfer RNA10,67010,73263 bp+–
ND4LProtein-coding gene10,73311,023291 bp+30.9%
ND4Protein-coding gene11,02312,3601,338 bp+37.8%
tRNA-HisTransfer RNA12,36112,42565 bp+–
tRNA-Ser (AGY)Transfer RNA12,42712,48357 bp+–
tRNA-Leu (CUN)Transfer RNA12,48112,55171 bp+–
ND5Protein-coding gene12,55214,3211,770 bp+36.8%
ND6Protein-coding gene14,31314,816504 bp−34.7%
tRNA-GluTransfer RNA14,82614,88863 bp−–
CYTBProtein-coding gene14,89016,0031,114 bp+40.1%
tRNA-ThrTransfer RNA16,00416,06966 bp+–
tRNA-ProTransfer RNA16,07016,13263 bp−–
D-loopControl region16,13371,017 bp–39.0%

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