Gene contents and organization of a mitochondrial DNA segment of the squid Loligo bleekeri

Junji Sasuga; Shin Ichi Yokobori; Masayuki Kaifu; Takuya Ueda; Kazuya Nishikawa; Kimitsuna Watanabe

doi:10.1007/PL00006513

Gene contents and organization of a mitochondrial DNA segment of the squid Loligo bleekeri

Junji Sasuga, Shin Ichi Yokobori, Masayuki Kaifu, Takuya Ueda, Kazuya Nishikawa, Kimitsuna Watanabe^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

The nucleotide sequence of a 9240-base pair DNA fragment of the mitochondrial (mt) genome of a squid, Loligo bleekeri, was determined, in which 8 protein and 14 tRNA genes were identified. The gene organization of the mt-genome exhibits a greater resemblance to the gene organization of arthropods and a chiton, Katharina tunicata, than to those of a mussel, Mytilus edulis, and land snails. A cloverleaf-like structure was observed between the genes for subunits 4 and 5 of NADH dehydrogenase (ND4 and -5), which is considered to have originated from histidine tRNA. It is presumed that this structure functions as a transcriptional punctuation signal for the maturation of the ND4 and ND5 mRNAs.

Original language	English
Pages (from-to)	692-702
Number of pages	11
Journal	Journal of Molecular Evolution
Volume	48
Issue number	6
DOIs	https://doi.org/10.1007/PL00006513
Publication status	Published - 1999 Jul 1
Externally published	Yes

Keywords

Cephalopoda
Gene organization
Mitochondrial DNA
Mollusca
Unusual genetic code
tRNA punctuation

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Molecular Biology
Genetics

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10.1007/PL00006513

Cite this

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title = "Gene contents and organization of a mitochondrial DNA segment of the squid Loligo bleekeri",

abstract = "The nucleotide sequence of a 9240-base pair DNA fragment of the mitochondrial (mt) genome of a squid, Loligo bleekeri, was determined, in which 8 protein and 14 tRNA genes were identified. The gene organization of the mt-genome exhibits a greater resemblance to the gene organization of arthropods and a chiton, Katharina tunicata, than to those of a mussel, Mytilus edulis, and land snails. A cloverleaf-like structure was observed between the genes for subunits 4 and 5 of NADH dehydrogenase (ND4 and -5), which is considered to have originated from histidine tRNA. It is presumed that this structure functions as a transcriptional punctuation signal for the maturation of the ND4 and ND5 mRNAs.",

keywords = "Cephalopoda, Gene organization, Mitochondrial DNA, Mollusca, Unusual genetic code, tRNA punctuation",

author = "Junji Sasuga and Yokobori, {Shin Ichi} and Masayuki Kaifu and Takuya Ueda and Kazuya Nishikawa and Kimitsuna Watanabe",

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AU - Sasuga, Junji

AU - Yokobori, Shin Ichi

AU - Kaifu, Masayuki

AU - Ueda, Takuya

AU - Nishikawa, Kazuya

AU - Watanabe, Kimitsuna

PY - 1999/7/1

Y1 - 1999/7/1

N2 - The nucleotide sequence of a 9240-base pair DNA fragment of the mitochondrial (mt) genome of a squid, Loligo bleekeri, was determined, in which 8 protein and 14 tRNA genes were identified. The gene organization of the mt-genome exhibits a greater resemblance to the gene organization of arthropods and a chiton, Katharina tunicata, than to those of a mussel, Mytilus edulis, and land snails. A cloverleaf-like structure was observed between the genes for subunits 4 and 5 of NADH dehydrogenase (ND4 and -5), which is considered to have originated from histidine tRNA. It is presumed that this structure functions as a transcriptional punctuation signal for the maturation of the ND4 and ND5 mRNAs.

AB - The nucleotide sequence of a 9240-base pair DNA fragment of the mitochondrial (mt) genome of a squid, Loligo bleekeri, was determined, in which 8 protein and 14 tRNA genes were identified. The gene organization of the mt-genome exhibits a greater resemblance to the gene organization of arthropods and a chiton, Katharina tunicata, than to those of a mussel, Mytilus edulis, and land snails. A cloverleaf-like structure was observed between the genes for subunits 4 and 5 of NADH dehydrogenase (ND4 and -5), which is considered to have originated from histidine tRNA. It is presumed that this structure functions as a transcriptional punctuation signal for the maturation of the ND4 and ND5 mRNAs.

KW - Cephalopoda

KW - Gene organization

KW - Mitochondrial DNA

KW - Mollusca

KW - Unusual genetic code

KW - tRNA punctuation

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Gene contents and organization of a mitochondrial DNA segment of the squid Loligo bleekeri

Abstract

Keywords

ASJC Scopus subject areas

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