• Title/Summary/Keyword: Cytochrome oxidase subunit I

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A Study on the Distribution of Cytochrome-c-oxidase Subunit in the Cristae of Mitochondria (미토콘드리아 크리스테에 존재하는 cytochrome-c-oxidase의 단백질 소단위 분포에 관한 연구)

  • Kim, Soo-Jin;Lee, Ji-Hyon;Chung, Cha-Kwon
    • Applied Microscopy
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    • v.24 no.4
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    • pp.41-51
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    • 1994
  • The topology of the enzyme has been investigated by biochemical studies including chemical labeling and cross linking. Thirteen subunits(polypeptides) of the cytochrome-c-oxidase have localistic characteristics of existing in the matrix side or cytoplasmic side in the mitochondria. In order to observe the distribution of the enzyme subunit on the mitochondria membrane, immunogold-labeling methods were employed. Antibody was obtained from the serum of immunized rabbit with enzyme subunit antigen which was obtained from cytochrome-c-oxidase of the beef heart muscle mitochondria. Beef heart muscle tissue as a tissue antigen was stained with immunized rabbit IgG and protein A gold complex. Electron microscopy has identified the existance of cytochrome-c-oxidase subunit $Mt_I,\;Mt_{II}\;and\;Mt_{III}$ on the membrane of cristae and outer chamber of mitochondria and the subunit $C_{IV}$ on the membrane of cristae and matrix of mitochondria. Particularly, the subunit $C_{IV}$ was also observed to exist in the sarcoplasm of muscle tissue.

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Cytochrome Oxidase Subunit II (COII) Sequence Analysis of Root-knot Nematode, Meloidogyne sp. HSC, Infesting Yam (Dioscorea bulbifera) (둥근마(Dioscorea bulbifera)를 가해하는 뿌리혹선충(Meloidogyne sp. HSC)의 Cytochrome Oxidase Subunit II (COII) 염기서열 분석)

  • Han, Sang-Chan;Kang, Sang-Jin;Kim, Yong-Gyun
    • Korean journal of applied entomology
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    • v.46 no.1 s.145
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    • pp.169-173
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    • 2007
  • Root-knot nematode damage was found on yam, Dioscorea bulbifera in Andong Korea. From the root-knots, female nematodes were isolated and subjected to DNA sequence analysis. Sequence of cytochrome oxidase subunit II (COII) was analyzed from the genomic DNA of the isolate. COII locus size and sequence of the nematode isolate were similar to those of Meloidogyne javanica or M. incognita. However, an analysis of HinfI restriction site, a species-specific character between these two species, showed that the isolate did not match to either M. javanica or M. incognita.

Phylogenetic Analysis of Reticulitermes speratus using the Mitochondrial Cytochrome C Oxidase Subunit I Gene

  • Cho, Moon-Jung;Shin, Keum;Kim, Young-Kyoon;Kim, Yeong-Suk;Kim, Tae-Jong
    • Journal of the Korean Wood Science and Technology
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    • v.38 no.2
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    • pp.135-139
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    • 2010
  • Reticulitermes speratus is commonly found in Asia, including Korea and Japan. We recently analyzed the 5' region of mitochondrial cytochrome c oxidase subunit I to perform a phylogenetic analysis of R. speratus KMT1, isolated in Seoul, Korea. Our results, using COXI, suggest that the taxonomy of R. speratus should be reconsidered with regard to the subgenus group. A similar phylogenetic analysis by COXI and COXII demonstrated the reliability of COXI genetic information in a molecular phylogenetic analysis of termites.

Stock Characterization of the Fleshy Prawn (Penaeus chinensis) in the Yellow Sea by Intraspecific Sequence Variation of the Cytochrome c Oxidase Subunit I Gene

  • HWANG Gyu-Lin
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.29 no.6
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    • pp.876-881
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    • 1996
  • To determine the amount of genetic variation among populations of Penaeus chinensis (Osbeck) in the Yellow Sea, 342 bp region of the mitochondrial cytochrome c oxidase subunit I gene was amplified and sequenced. Six haplotypes, which differ by from one to four nucleotide sustitutions, were detected from 34 individuals of 4 populations examined. Mean sequence divergence between pairs of haplotypes was $0.68\%$. Most individuals from 4 populations were shared by the most common genotype. This genotype was distributed evenly in the Korean and Chinese populations. This result is in accordance with findings observed using RFLPs analysis of mtDNA (Hwang et al., 1997). Therefore, it is suggested that P. chinensis should be treated as one unit stock in the Yellow Sea.

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Genetic diversity of the Asian shore crab, Hemigrapsus sanguineus, in Korea and Japan inferred from mitochondrial cytochrome c oxidase subunit I gene

  • Yoon, Moon-Geun;Hong, Sung-Eic;Nam, Yoon-Kwon;Kim, Dong-Soo
    • Animal cells and systems
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    • v.15 no.3
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    • pp.243-249
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    • 2011
  • The genetic diversity and population history of the Asian shore crab, Hemigrapsus sanguineus, were investigated with a nucleotide sequence analysis of 536 base pairs (bp) of the mitochondrial cytochrome c oxidase subunit I gene (COI) in 111 samples collected from four populations in Korea and one in Japan. In total, 28 haplotypes were defined by 27 variable nucleotide sites in the COI region examined. The observed haplotypes had a shallow haplotype genealogy and no geographical associations. Most of the populations had high haplotype diversity (0.656-0.788) and low nucleotide diversity (0.00165-0.00244), and significant negative values for Fu's $F_S$, suggesting rapid and recent population growth from an ancestral population and sudden population expansion. The pairwise fixation indices ($F_{ST}$) estimated with the exact test and the migration rates indicate that substantial gene flow occurs among these populations as a result of sea currents, except between the Yellow Sea coast of Korea (BUA) and the Pacific Ocean coast of Japan (JPA). These two populations (BUA and JPA) showed significant genetic differentiation and low migration rate.

Changes in Cytochrome c Oxidase and NO in Rat Lung Mitochondria Following Iron Overload

  • Kim, Min-Sun;Hong, Min-A;Song, Eun-Sook
    • Animal cells and systems
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    • v.13 no.2
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    • pp.105-112
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    • 2009
  • In this study, the effects of iron on cytochrome c oxidase (CcO) in rat lung mitochondria were examined. Similar to liver mitochondria, iron accumulated considerably in lung mitochondria (more than 2-fold). Likewise, the reactive oxygen species and nitric oxide (NO) content of mitochondria were increased by more than 50% and 100%, respectively. NO might be produced by nitric oxide synthase (NOS), eNOS and iNOS type, with particular contribution by NOS in mitochondria. The respiratory control ratio of iron overloaded lung mitochondria dropped to nearly 50% due to increased state 4. Likewise, cytochrome c oxidase activity was lowered significantly to approximately 50% due to excess iron. Real-time PCR revealed that the expression of isoforms 1 and 2 of subunit IV of CeO was enhanced greatly under excess iron conditions. Taken together, these results show that oxidative phosphorylation within lung mitochondria may be influenced by iron overload through changes in cytochrome c oxidase and NO.

Phylogenetic Analysis Using Cytochrome c Oxidase Subunit I of Silver Croaker(Pennahia argentata) Mitochondria DNA (미토콘드리아 DNA의 cytochrome c oxidase subunit I을 이용한 보구치(Pennahia argentata) 계통 분석)

  • Park, Jae-Won;Park, Kiyun;Kwak, Ihn-Sil
    • Korean Journal of Ecology and Environment
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    • v.53 no.3
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    • pp.265-274
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    • 2020
  • Silver croaker (Pennahia argentata) is a turbulent species that is widely distributed worldwide and is mainly found in the bottom of the ocean. In the study, we characterized the cytochrome c oxidase subunit I (COI) gene of the mitochondrial DNA (mtDNA) on P. argentata inhabiting Gwangyang Bay and analyzed the phylogenetic location of marine fish species. As a result of multiple arrangement of 605 bp COI sequences, high homology of mtDNA nucleotide sequences was confirmed in the silver croakers from Gwangyang Bay (98~100%). However, the nucleotide variation was different according to the catching points of the inland and the open seas of Gwangyang Bay. The nucleotide sequence variation in COI was high in P. argentata from the open seas of Gwangyang Bay (43.2~70.3%). Furthermore, the phylogenetic analysis of 13 fish showed that P. argentata from Gwangyang Bay were grouped into one clade with P. argentata reported in Taiwan, and the evolutionary distance was 0.036. In addition, it was identified that the evolutionary distance was close to that of fish belonging to the Mi-iuy croaker (Miichthys miiuy) and the Big-head pennah croaker (Pennahia Macrocephalus) (0.041~0.048). The result of these studies will be used as the key genetic information for fisheries resources monitoring and species diversity management according to the coastal environment.

Involvement of Cytochrome c Oxidase Subunit I Gene during Neuronal Differentiation of PC12 Cells

  • Kang, Hyo-Jung;Chung, Jun-Mo;Lee, See-Woo
    • BMB Reports
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    • v.30 no.4
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    • pp.285-291
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    • 1997
  • It is becoming increasingly evident that significant changes in gene expression occur during the course of neuronal differentiation. Thus, it should be possible to gain information about the biochemical events by identifying differentially expressed genes in neuronal differentiation The PC12 cell line is a useful model system to investigate the molecular mechanism underlying neuronal differentiation and has been used extensively for the study of the molecular events that underlie the biological actions of nerve growth factor (NGF). In this study, we report an application of the recently described mRNA differential display method to analyze differential gene expression during neuronal differentiation. Using this technique, we have identified several cDNA tags expressed differentially during neuronal differentiation. Interestingly, one of these clones was cytochrome c oxidase subunit I (COX I) gene. The differential expression of COX I gene was confirmed by Northern blot analysis as well as RT-PCR. Southern blot analysis of the genomic DNA of PC12 cells revealed that COX I is a single gene. Induction of the oxidative enzyme might reflect the energy requirement in neuronal differentiation.

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Phylogenetic Study of Genus Haliotis in Korea by Cytochrome c Oxidase Subunit 1 and RAPD Analysis (Cytochrome c oxidase subunit 1과 RAPD 분석에 의한 한국 전복속의 계통 연구)

  • Seo, Yong Bae;Kang, Sung Chul;Choi, Seong Seok;Lee, Jong Kyu;Jeong, Tae Hyug;Lim, Han Kyu;Kim, Gun-Do
    • Journal of Life Science
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    • v.26 no.4
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    • pp.406-413
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    • 2016
  • Abalones are gastropod mollusks belonging to the genus Haliotis. Pacific abalones are regarded as a very important marine gastropod mollusk in Korea, Japan, China, and also in food industries around the world. In Korea, 6 species of abalone have been reported to occur along the coasts: Haliotis discus hannai, Haliotis discus discus, Haliotis madaka, Haliotis gigantea, Haliotis diversicolor supertexta, and Haliotis diversicolor diversicolor. This study was performed to discriminate the genetic variances by the partial sequences of the mitochondrial cytochrome c oxidase subunit I (COI) genes and random amplified polymorphic DNA (RAPD) analysis against four species of Pacific abalone (H. discus hannai, H. discus, H. madaka, H. gigantea). COI gene is reasonably well conserved and has been sequenced in various invertebrate taxa. The RAPD analysis technique is a relatively simple and low cost method that allows differentiation of taxa without the need to know their genomes. In this study, we investigated the genetic diversity, phylogenetic relationships within each species. The COI and RAPD analysis were able to distinguish between H. gigantea and the other three species. However, these analysis methods were inadequate to distinguish between H. discus and H. madaka. These results are believed to be able to provide a basis data for future hybrid breeding research by defining the genetically closely related four species of abalone, which is to develop new hybrid abalone for export using hybrid breeding.

Molecular characterization of Plasmodium juxtanucleare in Thai native fowls based on partial cytochrome C oxidase subunit I gene

  • Pohuang, Tawatchai;Junnu, Sucheeva
    • Korean Journal of Veterinary Research
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    • v.59 no.2
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    • pp.69-74
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    • 2019
  • Avian malaria is one of the most important general blood parasites of poultry in Southeast Asia. Plasmodium (P.) juxtanucleare causes avian malaria in wild and domestic fowl. This study aimed to identify and characterize the Plasmodium species infecting in Thai native fowl. Blood samples were collected for microscopic examination, followed by detection of the Plasmodium cox I gene by using PCR. Five of the 10 sampled fowl had the desired 588 base pair amplicons. Sequence analysis of the five amplicons indicated that the nucleotide and amino acid sequences were homologous to each other and were closely related (100% identity) to a P. juxtanucleare strain isolated in Japan (AB250415). Furthermore, the phylogenetic tree of the cox I gene showed that the P. juxtanucleare in this study were grouped together and clustered with the Japan strain. The presence of P. juxtanucleare described in this study is the first report of P. juxtanucleare in the Thai native fowl of Thailand.