Lethenteron appendix

American brook lamprey

Maximum lifespan

5 yr

AnAge record

mtDNA size

16,169 bp

RefSeq NC_025583.1

GC content

38.63%

Whole genome

Non-coding

743 bp

D-loop 643 bp

Where American brook lamprey sits among 2,335 species

Whole-genome GC content against maximum lifespan. American brook lamprey has the 2,014th longest lifespan of them.

This species
All other species

Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,169 bp

GC skew (G − C) / (G + C): −0.262
AT skew (A − T) / (A + T): +0.033

Life history

Maximum lifespan: 5 years

Lifespan from AnAge · AnAge record

About this record

Lifespan source: AnAge build 15
Based on: an animal in the wild
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 genome16,169 bp

Protein-coding11,389 bp

12S rRNA903 bp

16S rRNA1,616 bp

All tRNA1,530 bp

D-loop643 bp

Genes and regions

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

Base composition of Lethenteron appendix genes

ND1NADH dehydrogenase subunit 1	966 bp	28.8%	33.1%	14.4%	23.7%	38.10%	−0.245	−0.070
ND2NADH dehydrogenase subunit 2	1,044 bp	32.5%	30.3%	11.8%	25.5%	37.26%	−0.368	+0.035
COX1Cytochrome c oxidase subunit I	1,554 bp	28.2%	31.7%	16.0%	24.1%	40.09%	−0.204	−0.059
COX2Cytochrome c oxidase subunit II	699 bp	31.5%	31.2%	14.9%	22.5%	37.34%	−0.203	+0.005
ATP8ATP synthase F0 subunit 8	168 bp	33.9%	28.6%	8.9%	28.6%	37.50%	−0.524	+0.086
ATP6ATP synthase F0 subunit 6	679 bp	31.7%	32.3%	9.7%	26.4%	36.08%	−0.461	−0.009
COX3Cytochrome c oxidase subunit III	786 bp	27.0%	29.6%	16.2%	27.2%	43.38%	−0.255	−0.047
ND3NADH dehydrogenase subunit 3	351 bp	25.9%	32.5%	12.8%	28.8%	41.60%	−0.384	−0.112
ND4LNADH dehydrogenase subunit 4L	291 bp	29.9%	30.2%	12.7%	27.1%	39.86%	−0.362	−0.006
ND4NADH dehydrogenase subunit 4	1,377 bp	31.5%	32.0%	10.8%	25.6%	36.46%	−0.406	−0.008
ND5NADH dehydrogenase subunit 5	1,797 bp	33.1%	30.0%	11.5%	25.4%	36.90%	−0.376	+0.049
ND6NADH dehydrogenase subunit 6	519 bp	46.2%	14.1%	12.3%	27.4%	39.69%	−0.379	+0.534
CYTBCytochrome b	1,191 bp	28.2%	34.3%	14.9%	22.6%	37.45%	−0.206	−0.098
12S rRNA12S ribosomal RNA	903 bp	32.4%	21.9%	18.9%	26.7%	45.63%	−0.170	+0.193
16S rRNA16S ribosomal RNA	1,616 bp	36.4%	24.7%	17.6%	21.3%	38.92%	−0.094	+0.191
D-loopControl region (D-loop)	643 bp	29.5%	35.8%	13.4%	21.3%	34.68%	−0.229	−0.095

Codon usage

Counts per codon, darker is more frequent

Gene

3,807 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F6.2%

UUU148

UUC89

Leu L15.9%

UUA181

UUG16

CUU147

CUC46

CUA177

CUG39

Ile I8.6%

AUU215

AUC114

Met M5.8%

AUA189

AUG30

Val V4.8%

GUU70

GUC30

GUA69

GUG12

Ser S7.1%

UCU66

UCC55

UCA81

UCG6

AGU24

AGC37

Pro P5.2%

CCU48

CCC33

CCA105

CCG11

Thr T8.1%

ACU98

ACC82

ACA126

ACG3

Ala A8.0%

GCU90

GCC115

GCA94

GCG7

Tyr Y2.9%

UAU65

UAC45

His H2.7%

CAU44

CAC57

Gln Q2.6%

CAA93

CAG5

Asn N3.8%

AAU80

AAC63

Lys K2.5%

AAA84

AAG10

Asp D1.9%

GAU34

GAC37

Glu E2.4%

GAA79

GAG14

Cys C1.0%

UGU24

UGC14

Trp W2.9%

UGA96

UGG14

Arg R1.9%

CGU16

CGC17

CGA36

CGG4

Gly G5.5%

GGU29

GGC58

GGA80

GGG44

Stop 0.3%

UAA5

UAG2

AGA3

AGG2

Genome map

39 annotated features in NC_025583.1

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 (38.6%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 39 features as a table

Annotated features of Lethenteron appendix (NC_025583.1)
Feature	Type	Start	End	Length	Strand	GC
COX1	Protein-coding gene	1	1,554	1,554 bp	+	40.1%
tRNA-Ser (UCN)	Transfer RNA	1,545	1,616	72 bp	−	–
tRNA-Asp	Transfer RNA	1,617	1,685	69 bp	+	–
COX2	Protein-coding gene	1,689	2,387	699 bp	+	37.3%
tRNA-Lys	Transfer RNA	2,400	2,466	67 bp	+	–
ATP8	Protein-coding gene	2,468	2,635	168 bp	+	37.5%
ATP6	Protein-coding gene	2,626	3,304	679 bp	+	36.1%
COX3	Protein-coding gene	3,305	4,090	786 bp	+	43.4%
tRNA-Gly	Transfer RNA	4,099	4,167	69 bp	+	–
ND3	Protein-coding gene	4,169	4,519	351 bp	+	41.6%
tRNA-Arg	Transfer RNA	4,525	4,590	66 bp	+	–
ND4L	Protein-coding gene	4,598	4,888	291 bp	+	39.9%
ND4	Protein-coding gene	4,882	6,258	1,377 bp	+	36.5%
tRNA-His	Transfer RNA	6,260	6,328	69 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	6,328	6,398	71 bp	+	–
tRNA-Leu (CUN)	Transfer RNA	6,399	6,470	72 bp	+	–
ND5	Protein-coding gene	6,472	8,268	1,797 bp	+	36.9%
ND6	Protein-coding gene	8,253	8,771	519 bp	−	39.7%
D-loop	Control region	8,772	9,292	521 bp	–	34.7%
tRNA-Thr	Transfer RNA	9,293	9,363	71 bp	+	–
tRNA-Glu	Transfer RNA	9,365	9,435	71 bp	−	–
D-loop	Control region	9,436	9,557	122 bp	–	34.7%
CYTB	Protein-coding gene	9,558	10,748	1,191 bp	+	37.5%
tRNA-Pro	Transfer RNA	10,753	10,823	71 bp	−	–
tRNA-Phe	Transfer RNA	10,834	10,900	67 bp	+	–
12S rRNA	Ribosomal RNA	10,901	11,803	903 bp	+	45.6%
tRNA-Val	Transfer RNA	11,804	11,874	71 bp	+	–
16S rRNA	Ribosomal RNA	11,875	13,490	1,616 bp	+	38.9%
tRNA-Leu (UUR)	Transfer RNA	13,491	13,564	74 bp	+	–
ND1	Protein-coding gene	13,569	14,534	966 bp	+	38.1%
tRNA-Ile	Transfer RNA	14,563	14,631	69 bp	+	–
tRNA-Gln	Transfer RNA	14,634	14,704	71 bp	−	–
tRNA-Met	Transfer RNA	14,705	14,772	68 bp	+	–
ND2	Protein-coding gene	14,774	15,817	1,044 bp	+	37.3%
tRNA-Trp	Transfer RNA	15,816	15,883	68 bp	+	–
tRNA-Ala	Transfer RNA	15,886	15,953	68 bp	−	–
tRNA-Asn	Transfer RNA	15,956	16,024	69 bp	−	–
tRNA-Cys	Transfer RNA	16,026	16,092	67 bp	−	–
tRNA-Tyr	Transfer RNA	16,098	16,168	71 bp	−	–