Architeuthis dux

Giant squid

Maximum lifespan

35 yr

AnAge record

mtDNA size

20,331 bp

RefSeq NC_011581.1

GC content

30.28%

Whole genome

Non-coding

1,455 bp

Including the D-loop

Where Giant squid sits among 2,335 species

Whole-genome GC content against maximum lifespan. Giant squid has the 340th longest lifespan of them.

This species
All other species

Plot other mtDNA features with this species highlighted

Base composition

Whole genome20,331 bp

GC skew (G − C) / (G + C): −0.378
AT skew (A − T) / (A + T): +0.130

Life history

Maximum lifespan: 35 years

Lifespan from AnAge · AnAge record

About this record

Lifespan source: AnAge build 15
Based on: an animal in the wild
Data quality: questionable, small 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 genome20,331 bp

Protein-coding14,995 bp

12S rRNA916 bp

16S rRNA1,407 bp

All tRNA1,558 bp

Genes and regions

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

Base composition of Architeuthis dux genes

ND1NADH dehydrogenase subunit 1	935 bp	47.3%	20.6%	7.6%	24.5%	32.09%	−0.527	+0.392
ND2NADH dehydrogenase subunit 2	1,036 bp	38.8%	35.7%	6.8%	18.7%	25.48%	−0.470	+0.041
COX1Cytochrome c oxidase subunit I	1,533 bp	30.1%	33.6%	14.5%	21.7%	36.27%	−0.198	−0.054
COX2Cytochrome c oxidase subunit II	687 bp	34.9%	31.4%	12.2%	21.4%	33.62%	−0.273	+0.053
ATP8ATP synthase F0 subunit 8	156 bp	41.7%	33.3%	5.1%	19.9%	25.00%	−0.590	+0.111
ATP6ATP synthase F0 subunit 6	693 bp	32.8%	35.4%	8.9%	22.9%	31.89%	−0.439	−0.038
COX3Cytochrome c oxidase subunit III	780 bp	29.6%	32.3%	14.2%	23.8%	38.08%	−0.253	−0.043
ND3NADH dehydrogenase subunit 3	354 bp	33.3%	36.4%	9.3%	20.9%	30.23%	−0.383	−0.045
ND4LNADH dehydrogenase subunit 4L	297 bp	48.8%	26.3%	3.4%	21.5%	24.92%	−0.730	+0.300
ND4NADH dehydrogenase subunit 4	1,360 bp	48.3%	23.4%	6.8%	21.5%	28.31%	−0.522	+0.348
ND5NADH dehydrogenase subunit 5	1,698 bp	47.7%	23.3%	7.2%	21.7%	28.98%	−0.500	+0.343
ND6NADH dehydrogenase subunit 6	507 bp	50.7%	22.3%	5.5%	21.5%	27.02%	−0.591	+0.389
CYTBCytochrome b	1,138 bp	48.3%	20.7%	9.8%	21.1%	30.93%	−0.364	+0.399
12S rRNA12S ribosomal RNA	916 bp	40.7%	32.5%	7.8%	19.0%	26.75%	−0.420	+0.112
16S rRNA16S ribosomal RNA	1,407 bp	42.0%	31.5%	7.1%	19.4%	26.51%	−0.464	+0.143

Codon usage

Counts per codon, darker is more frequent

Gene

3,723 codons in all protein-coding genes. Grouped with the Invertebrate mitochondrial code (NCBI table 5).

Phe F8.7%

UUU267

UUC58

Leu L15.3%

UUA260

UUG122

CUU59

CUC20

CUA100

CUG9

Ile I8.6%

AUU258

AUC62

Met M7.2%

AUA199

AUG70

Val V7.2%

GUU144

GUC8

GUA77

GUG40

Ser S9.5%

UCU99

UCC30

UCA64

UCG5

AGU61

AGC10

AGA62

AGG21

Pro P3.3%

CCU63

CCC27

CCA28

CCG5

Thr T4.4%

ACU66

ACC40

ACA55

ACG1

Ala A3.7%

GCU74

GCC31

GCA21

GCG10

Tyr Y4.1%

UAU114

UAC39

His H2.4%

CAU54

CAC35

Gln Q1.5%

CAA43

CAG13

Asn N4.6%

AAU131

AAC39

Lys K2.4%

AAA65

AAG23

Asp D2.0%

GAU59

GAC15

Glu E2.1%

GAA47

GAG32

Cys C1.8%

UGU63

UGC4

Trp W2.8%

UGA74

UGG30

Arg R1.5%

CGU26

CGC2

CGA24

CGG3

Gly G6.8%

GGU107

GGC10

GGA72

GGG64

Stop 0.2%

UAA6

UAG3

Genome map

43 annotated features in NC_011581.1

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

Protein-coding18
rRNA2
tRNA23

Outer ring: + strand, arrows run clockwise. Inner ring: − strand.
Middle ring: GC% of each gene against the whole genome (30.3%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 43 features as a table

Annotated features of Architeuthis dux (NC_011581.1)
Feature	Type	Start	End	Length	Strand	GC
COX3	Protein-coding gene	1	780	780 bp	+	38.1%
tRNA-Lys	Transfer RNA	791	856	66 bp	+	–
tRNA-Arg	Transfer RNA	872	938	67 bp	+	–
tRNA-Ile	Transfer RNA	941	1,006	66 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	1,015	1,082	68 bp	+	–
ND2	Protein-coding gene	1,083	2,118	1,036 bp	+	25.5%
COX1	Protein-coding gene	2,095	3,627	1,533 bp	+	36.3%
COX2	Protein-coding gene	3,630	4,316	687 bp	+	33.6%
tRNA-Asp	Transfer RNA	4,317	4,383	67 bp	+	–
ATP8	Protein-coding gene	4,385	4,540	156 bp	+	25.0%
ATP6	Protein-coding gene	4,542	5,234	693 bp	+	31.9%
tRNA-Phe	Transfer RNA	5,260	5,327	68 bp	−	–
tRNA-Val	Transfer RNA	5,326	5,406	81 bp	−	–
12S rRNA	Ribosomal RNA	5,407	6,322	916 bp	−	26.8%
tRNA-Met	Transfer RNA	6,323	6,392	70 bp	−	–
tRNA-Cys	Transfer RNA	6,393	6,457	65 bp	−	–
tRNA-Gln	Transfer RNA	6,466	6,532	67 bp	−	–
COX3	Protein-coding gene	7,103	7,882	780 bp	+	38.1%
tRNA-Ala	Transfer RNA	7,907	7,974	68 bp	+	–
tRNA-Asn	Transfer RNA	7,983	8,049	67 bp	+	–
ND3	Protein-coding gene	8,107	8,460	354 bp	+	30.2%
COX1	Protein-coding gene	8,548	10,080	1,533 bp	+	36.3%
COX2	Protein-coding gene	10,083	10,769	687 bp	+	33.6%
tRNA-Asp	Transfer RNA	10,770	10,836	67 bp	+	–
ATP8	Protein-coding gene	10,838	10,993	156 bp	+	25.0%
ATP6	Protein-coding gene	10,995	11,687	693 bp	+	31.9%
ND5	Protein-coding gene	11,721	13,418	1,698 bp	−	29.0%
tRNA-His	Transfer RNA	13,419	13,482	64 bp	−	–
ND4	Protein-coding gene	13,484	14,843	1,360 bp	−	28.3%
ND4L	Protein-coding gene	14,840	15,136	297 bp	−	24.9%
tRNA-Thr	Transfer RNA	15,143	15,209	67 bp	+	–
tRNA-Ser (UCN)	Transfer RNA	15,210	15,273	64 bp	−	–
CYTB	Protein-coding gene	15,274	16,411	1,138 bp	−	30.9%
ND6	Protein-coding gene	16,413	16,919	507 bp	−	27.0%
tRNA-Pro	Transfer RNA	16,921	16,987	67 bp	−	–
ND1	Protein-coding gene	16,988	17,922	935 bp	−	32.1%
tRNA-Leu (UUR)	Transfer RNA	17,923	17,991	69 bp	−	–
tRNA-Leu (CUN)	Transfer RNA	17,997	18,064	68 bp	−	–
16S rRNA	Ribosomal RNA	18,065	19,471	1,407 bp	−	26.5%
tRNA-Tyr	Transfer RNA	19,472	19,537	66 bp	−	–
tRNA-Trp	Transfer RNA	19,539	19,606	68 bp	−	–
tRNA-Gly	Transfer RNA	19,639	19,703	65 bp	−	–
tRNA-Glu	Transfer RNA	19,704	19,778	75 bp	−	–