Okamoto S

References (6)

Title : Regulation of secretion and enzymatic activity of lipoprotein lipase by C-mannosylation - Okamoto_2017_Biochem.Biophys.Res.Commun_486_558
Author(s) : Okamoto S , Murano T , Suzuki T , Uematsu S , Niwa Y , Sasazawa Y , Dohmae N , Bujo H , Simizu S
Ref : Biochemical & Biophysical Research Communications , 486 :558 , 2017
Abstract : Lipoprotein lipase (LPL) is a crucial enzyme in lipid metabolism and transport, and its enzymatic deficiency causes metabolic disorders, such as hypertriglyceridemia. LPL has one predicted C-mannosylation site at Trp417. In this study, we demonstrated that LPL is C-mannosylated at Trp417 by mass spectrometry. Furthermore, by using wild-type and a C-mannosylation-defective mutant of LPL-overexpressing cell lines, we revealed that both secretion efficiency and enzymatic activity of C-mannosylation-defective mutant LPL were lower than those of wild-type. These data suggest the importance of C-mannosylation for LPL functions.
ESTHER : Okamoto_2017_Biochem.Biophys.Res.Commun_486_558
PubMedSearch : Okamoto_2017_Biochem.Biophys.Res.Commun_486_558
PubMedID: 28327359
Gene_locus related to this paper: human-LPL

Title : Complete genome sequence of Bradyrhizobium sp. S23321: insights into symbiosis evolution in soil oligotrophs - Okubo_2012_Microbes.Environ_27_306
Author(s) : Okubo T , Tsukui T , Maita H , Okamoto S , Oshima K , Fujisawa T , Saito A , Futamata H , Hattori R , Shimomura Y , Haruta S , Morimoto S , Wang Y , Sakai Y , Hattori M , Aizawa S , Nagashima KV , Masuda S , Hattori T , Yamashita A , Bao Z , Hayatsu M , Kajiya-Kanegae H , Yoshinaga I , Sakamoto K , Toyota K , Nakao M , Kohara M , Anda M , Niwa R , Jung-Hwan P , Sameshima-Saito R , Tokuda S , Yamamoto S , Yokoyama T , Akutsu T , Nakamura Y , Nakahira-Yanaka Y , Takada Hoshino Y , Hirakawa H , Mitsui H , Terasawa K , Itakura M , Sato S , Ikeda-Ohtsubo W , Sakakura N , Kaminuma E , Minamisawa K
Ref : Microbes Environ , 27 :306 , 2012
Abstract : Bradyrhizobium sp. S23321 is an oligotrophic bacterium isolated from paddy field soil. Although S23321 is phylogenetically close to Bradyrhizobium japonicum USDA110, a legume symbiont, it is unable to induce root nodules in siratro, a legume often used for testing Nod factor-dependent nodulation. The genome of S23321 is a single circular chromosome, 7,231,841 bp in length, with an average GC content of 64.3%. The genome contains 6,898 potential protein-encoding genes, one set of rRNA genes, and 45 tRNA genes. Comparison of the genome structure between S23321 and USDA110 showed strong colinearity; however, the symbiosis islands present in USDA110 were absent in S23321, whose genome lacked a chaperonin gene cluster (groELS3) for symbiosis regulation found in USDA110. A comparison of sequences around the tRNA-Val gene strongly suggested that S23321 contains an ancestral-type genome that precedes the acquisition of a symbiosis island by horizontal gene transfer. Although S23321 contains a nif (nitrogen fixation) gene cluster, the organization, homology, and phylogeny of the genes in this cluster were more similar to those of photosynthetic bradyrhizobia ORS278 and BTAi1 than to those on the symbiosis island of USDA110. In addition, we found genes encoding a complete photosynthetic system, many ABC transporters for amino acids and oligopeptides, two types (polar and lateral) of flagella, multiple respiratory chains, and a system for lignin monomer catabolism in the S23321 genome. These features suggest that S23321 is able to adapt to a wide range of environments, probably including low-nutrient conditions, with multiple survival strategies in soil and rhizosphere.
ESTHER : Okubo_2012_Microbes.Environ_27_306
PubMedSearch : Okubo_2012_Microbes.Environ_27_306
PubMedID: 22452844
Gene_locus related to this paper: 9brad-i0g2u8 , 9brad-i0gf89 , braja-pcaD , 9brad-i0fzh8 , 9brad-i0gfv2 , 9brad-i0g2y4

Title : Genomic structure of an economically important cyanobacterium, Arthrospira (Spirulina) platensis NIES-39 - Fujisawa_2010_DNA.Res_17_85
Author(s) : Fujisawa T , Narikawa R , Okamoto S , Ehira S , Yoshimura H , Suzuki I , Masuda T , Mochimaru M , Takaichi S , Awai K , Sekine M , Horikawa H , Yashiro I , Omata S , Takarada H , Katano Y , Kosugi H , Tanikawa S , Ohmori K , Sato N , Ikeuchi M , Fujita N , Ohmori M
Ref : DNA Research , 17 :85 , 2010
Abstract : A filamentous non-N(2)-fixing cyanobacterium, Arthrospira (Spirulina) platensis, is an important organism for industrial applications and as a food supply. Almost the complete genome of A. platensis NIES-39 was determined in this study. The genome structure of A. platensis is estimated to be a single, circular chromosome of 6.8 Mb, based on optical mapping. Annotation of this 6.7 Mb sequence yielded 6630 protein-coding genes as well as two sets of rRNA genes and 40 tRNA genes. Of the protein-coding genes, 78% are similar to those of other organisms; the remaining 22% are currently unknown. A total 612 kb of the genome comprise group II introns, insertion sequences and some repetitive elements. Group I introns are located in a protein-coding region. Abundant restriction-modification systems were determined. Unique features in the gene composition were noted, particularly in a large number of genes for adenylate cyclase and haemolysin-like Ca(2+)-binding proteins and in chemotaxis proteins. Filament-specific genes were highlighted by comparative genomic analysis.
ESTHER : Fujisawa_2010_DNA.Res_17_85
PubMedSearch : Fujisawa_2010_DNA.Res_17_85
PubMedID: 20203057
Gene_locus related to this paper: spima-b5w3f7 , spipl-d4zug2 , spipl-d4zvx0 , spipl-d4zwi8 , spipl-d4zxa2 , spipl-d5a1w9 , artpn-d4zwi5 , artma-b5w601 , artpn-d5a0k5

Title : Complete genomic structure of the bloom-forming toxic cyanobacterium Microcystis aeruginosa NIES-843 - Kaneko_2007_DNA.Res_14_247
Author(s) : Kaneko T , Nakajima N , Okamoto S , Suzuki I , Tanabe Y , Tamaoki M , Nakamura Y , Kasai F , Watanabe A , Kawashima K , Kishida Y , Ono A , Shimizu Y , Takahashi C , Minami C , Fujishiro T , Kohara M , Katoh M , Nakazaki N , Nakayama S , Yamada M , Tabata S , Watanabe MM
Ref : DNA Research , 14 :247 , 2007
Abstract : The nucleotide sequence of the complete genome of a cyanobacterium, Microcystis aeruginosa NIES-843, was determined. The genome of M. aeruginosa is a single, circular chromosome of 5,842,795 base pairs (bp) in length, with an average GC content of 42.3%. The chromosome comprises 6312 putative protein-encoding genes, two sets of rRNA genes, 42 tRNA genes representing 41 tRNA species, and genes for tmRNA, the B subunit of RNase P, SRP RNA, and 6Sa RNA. Forty-five percent of the putative protein-encoding sequences showed sequence similarity to genes of known function, 32% were similar to hypothetical genes, and the remaining 23% had no apparent similarity to reported genes. A total of 688 kb of the genome, equivalent to 11.8% of the entire genome, were composed of both insertion sequences and miniature inverted-repeat transposable elements. This is indicative of a plasticity of the M. aeruginosa genome, through a mechanism that involves homologous recombination mediated by repetitive DNA elements. In addition to known gene clusters related to the synthesis of microcystin and cyanopeptolin, novel gene clusters that may be involved in the synthesis and modification of toxic small polypeptides were identified. Compared with other cyanobacteria, a relatively small number of genes for two component systems and a large number of genes for restriction-modification systems were notable characteristics of the M. aeruginosa genome.
ESTHER : Kaneko_2007_DNA.Res_14_247
PubMedSearch : Kaneko_2007_DNA.Res_14_247
PubMedID: 18192279
Gene_locus related to this paper: micae-a8yde8 , micae-a8yen2 , micae-a8yma5 , micae-MCYC , mican-b0jqg0 , mican-b0jqq0 , mican-b0jsa2 , mican-b0jxh1 , mican-b0jux6 , mican-b0jyg0

Title : Complete sequencing and characterization of 21,243 full-length human cDNAs - Ota_2004_Nat.Genet_36_40
Author(s) : Ota T , Suzuki Y , Nishikawa T , Otsuki T , Sugiyama T , Irie R , Wakamatsu A , Hayashi K , Sato H , Nagai K , Kimura K , Makita H , Sekine M , Obayashi M , Nishi T , Shibahara T , Tanaka T , Ishii S , Yamamoto J , Saito K , Kawai Y , Isono Y , Nakamura Y , Nagahari K , Murakami K , Yasuda T , Iwayanagi T , Wagatsuma M , Shiratori A , Sudo H , Hosoiri T , Kaku Y , Kodaira H , Kondo H , Sugawara M , Takahashi M , Kanda K , Yokoi T , Furuya T , Kikkawa E , Omura Y , Abe K , Kamihara K , Katsuta N , Sato K , Tanikawa M , Yamazaki M , Ninomiya K , Ishibashi T , Yamashita H , Murakawa K , Fujimori K , Tanai H , Kimata M , Watanabe M , Hiraoka S , Chiba Y , Ishida S , Ono Y , Takiguchi S , Watanabe S , Yosida M , Hotuta T , Kusano J , Kanehori K , Takahashi-Fujii A , Hara H , Tanase TO , Nomura Y , Togiya S , Komai F , Hara R , Takeuchi K , Arita M , Imose N , Musashino K , Yuuki H , Oshima A , Sasaki N , Aotsuka S , Yoshikawa Y , Matsunawa H , Ichihara T , Shiohata N , Sano S , Moriya S , Momiyama H , Satoh N , Takami S , Terashima Y , Suzuki O , Nakagawa S , Senoh A , Mizoguchi H , Goto Y , Shimizu F , Wakebe H , Hishigaki H , Watanabe T , Sugiyama A , Takemoto M , Kawakami B , Watanabe K , Kumagai A , Itakura S , Fukuzumi Y , Fujimori Y , Komiyama M , Tashiro H , Tanigami A , Fujiwara T , Ono T , Yamada K , Fujii Y , Ozaki K , Hirao M , Ohmori Y , Kawabata A , Hikiji T , Kobatake N , Inagaki H , Ikema Y , Okamoto S , Okitani R , Kawakami T , Noguchi S , Itoh T , Shigeta K , Senba T , Matsumura K , Nakajima Y , Mizuno T , Morinaga M , Sasaki M , Togashi T , Oyama M , Hata H , Komatsu T , Mizushima-Sugano J , Satoh T , Shirai Y , Takahashi Y , Nakagawa K , Okumura K , Nagase T , Nomura N , Kikuchi H , Masuho Y , Yamashita R , Nakai K , Yada T , Ohara O , Isogai T , Sugano S
Ref : Nat Genet , 36 :40 , 2004
Abstract : As a base for human transcriptome and functional genomics, we created the "full-length long Japan" (FLJ) collection of sequenced human cDNAs. We determined the entire sequence of 21,243 selected clones and found that 14,490 cDNAs (10,897 clusters) were unique to the FLJ collection. About half of them (5,416) seemed to be protein-coding. Of those, 1,999 clusters had not been predicted by computational methods. The distribution of GC content of nonpredicted cDNAs had a peak at approximately 58% compared with a peak at approximately 42%for predicted cDNAs. Thus, there seems to be a slight bias against GC-rich transcripts in current gene prediction procedures. The rest of the cDNAs unique to the FLJ collection (5,481) contained no obvious open reading frames (ORFs) and thus are candidate noncoding RNAs. About one-fourth of them (1,378) showed a clear pattern of splicing. The distribution of GC content of noncoding cDNAs was narrow and had a peak at approximately 42%, relatively low compared with that of protein-coding cDNAs.
ESTHER : Ota_2004_Nat.Genet_36_40
PubMedSearch : Ota_2004_Nat.Genet_36_40
PubMedID: 14702039
Gene_locus related to this paper: human-ABHD1 , human-ABHD4 , human-ABHD12 , human-ABHD16A , human-ACOT1 , human-LDAH , human-ABHD18 , human-CES1 , human-CES4A , human-CES5A , human-CPVL , human-DAGLB , human-EPHX2 , human-KANSL3 , human-LIPA , human-LPL , human-MEST , human-NDRG1 , human-NLGN1 , human-NLGN4X , human-PRCP , human-PRSS16 , human-SERAC1 , human-TMEM53

Title : Bacilysocin, a novel phospholipid antibiotic produced by Bacillus subtilis 168 - Tamehiro_2002_Antimicrob.Agents.Chemother_46_315
Author(s) : Tamehiro N , Okamoto-Hosoya Y , Okamoto S , Ubukata M , Hamada M , Naganawa H , Ochi K
Ref : Antimicrobial Agents & Chemotherapy , 46 :315 , 2002
Abstract : We have found a novel phospholipid antibiotic (named bacilysocin) which accumulates within (or associates with) the cells of Bacillus subtilis 168 and determined the structure by nuclear magnetic resonance and mass spectrometry analyses. The structure of bacilysocin elucidated was 1-(12-methyltetradecanoyl)-3-phosphoglyceroglycerol. Bacilysocin demonstrated antimicrobial activity, especially against certain fungi. Production of bacilysocin commenced immediately after growth ceased and before the formation of heat-resistant spores. The production of bacilysocin was completely blocked when the ytpA gene, which encodes a protein homologous to lysophospholipase, was disrupted, but blockage of the ytpA gene did not significantly affect growth. Sporulation was also impaired, with a 10-fold reduction in heat-resistant spore titers being detected. Since the ytpA disruptant actually lacked phospholipase activity, we propose that the YtpA protein functions as an enzyme for the biosynthesis of bacilysocin.
ESTHER : Tamehiro_2002_Antimicrob.Agents.Chemother_46_315
PubMedSearch : Tamehiro_2002_Antimicrob.Agents.Chemother_46_315
PubMedID: 11796336
Gene_locus related to this paper: bacsu-YTPA