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Young-HeeJung,Jong-OkKa,Choong-IllCheon,이명석,Eun-Sooksong,Soon-YoungChoi,DaehoCho,최상호,Kwon-SooHa,YoungMokPark,Jong-SoonChoi,Kyung-HeeMin 한국미생물학회 2003 The journal of microbiology Vol.41 No.2
A 6.1 kb Sph I fragment from the genomic DNA of Pseudomonas putida SM 25 was cloned into the vector pUC19. The open reading frame of catB was found to consist of 1,122 nucleotides. The sequence alignment of the catB gene products from different kinds of bacteria revealed an overall identity ranging from 40 to 98%. The catC gene contained an open reading frame of 96 codons, from which a protein with a molecular mass of about 10.6 kDa was predicted. The amino acids in the proposed activesite region of CatC were found to be almost conserved, including the charged residues. Since the catBC genes in P. putida SM25 were tightly linked, they could be regulated under coordinate transcription, and transcribed from a single promoter located upstream of the catB gene, as in P. putida RB1.
Min-JungKim,Kyo-YoungLee,Kyung-HeeMin,이명석,Choong-IllCheon,EunsookSong 한국유전학회 2003 Genes & Genomics Vol.25 No.2
In vitro t r a n s l a t i o n o f c y t o c h r o m e c o x i d a s e o n m i t o c h o n d r i a o f m o u s e tissues was compared with the level of mitochondrial DNA (mtDNA) deletion and of the transcript during aging. Translation activity of mitochondria from old testis declined considerably compared with old brain and liver. In the region of 12S rRNA and URF6L spanning COXI gene locus, age-related mtDNA deletion was considerable and multiple ranging from 7.4 kb to 9.17 kb deletion in old brain and testis, but barely detectable in old liver. The transcript amount of subunit I of cytochrome c oxidase decreased substantially in old testis, while being little reduced in brain and liver. Deletion, transcription and translation levels semed to be related to testis during aging but not in brain. Especially deletion level was not related with age in brain and liver. Present observation from testis suggests that, among the gene mutation and gene expresion steps, translational alteration may play a major role in irreversible aging process.Key words : translation, deletion, cytochrome c oxidase, aging, mouse testis mitochondria.Expression and Phylogenetic Analysis of Human Endogenous Retrovirus HERV-W env Family in Brain Tissues Kyung-Won Hong1+, Joo-Mi Yi1+, Kyung-Mi Shin1, Tae-Hyung Kim2, Jae-Won Huh1, Young-Choon Le3, Won-Ho Le1, Timothy J. Crow4 and Heui-So Kim1*1Division of Biological Sciences, College of Natural Sciences, Pusan National University, Pusan 609-735, Korea2Interdisciplinary Program of Bioinformatics, Pusan National University, Pusan 609-735, Korea