• 제목/요약/키워드: O-GlcNAc

검색결과 38건 처리시간 0.021초

Polymorphism in the intron 20 of porcine O-linked N-acetylglucosamine transferase

  • Kim, Jong Gug;Nonneman, Dan;Kim, Doo-Wan;Shin, Sangsu;Rohrer, Gary A.
    • Asian-Australasian Journal of Animal Sciences
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    • 제30권8호
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    • pp.1086-1092
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    • 2017
  • Objective: O-linked N-acetylglucosamine (O-GlcNAc) transferase (OGT) catalyzes the addition of O-GlcNAc and GlcNAcylation has extensive crosstalk with phosphorylation to regulate signaling and transcription. Pig OGT is located near the region of chromosome X that affects follicle stimulating hormone level and testes size. The objective of this study was to find the variations of OGT between European and Chinese pigs. Methods: Pigs were tested initially for polymorphism in OGT among European and Chinese pigs by polymerase chain reaction and sequencing at the U.S. Meat Animal Research Center (USMARC). The polymorphism was also determined in an independent population of pigs including European and Chinese Meishan (ME) breeds at the National Institute of Animal Science (NIAS, RDA, Korea). Results: The intron 20 of OGT from European and Chinese pigs was 514 and 233 bp, respectively, in the pigs tested initially. They included 1 White composite (WC) boar and 7 sows ($2Minzu{\times}WC$, $2Duroc\;[DU]{\times}WC$, $2ME{\times}WC$, $1Fengzing{\times}WC$) at USMARC. The 281-bp difference was due to an inserted 276-bp element and GACTT in European pigs. When additional WC and ME boars, the grandparents that were used to generate the $1/2ME{\times}1/2WC$ parents, and the 84 boars of 16 litters from mating of $1/2ME{\times}1/2WC$ parents were analyzed, the breeds of origin of X chromosome quantitative trait locus (QTL) were confirmed. The polymorphism was determined in an independent population of pigs including DU, Landrace, Yorkshire, and ME breeds at NIAS. OGT was placed at position 67 cM on the chromosome X of the USMARC swine linkage map. Conclusion: There was complete concordance with the insertion in European pigs at USMARC and NIAS. This polymorphism could be a useful marker to identify the breed of origin of X chromosome QTL in pigs produced by crossbreeding Chinese and European pigs.

Design, Synthesis and Preliminary Biological Evaluation of a Biotin-S-S-Phosphine Reagent

  • Kang, Dong W.;Kim, Eun J.
    • Bulletin of the Korean Chemical Society
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    • 제35권2호
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    • pp.383-391
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    • 2014
  • Biotin-S-S-Phosphine was designed and synthesized as a potential tool for a proteomic study of O-GlcNAcmodified proteins. This reagent features a disulfide linker between a triarylphosphine moiety, which allows selective conjugation to azide-containing proteins, and a biotin moiety that can allow easy isolation through its strong affinity toward avidin-coated solid beads. The disulfide linkage within this reagent can allow the easy release of the bound molecules of interest, which is difficult to achieve when a biotin:avidin pair is used alone, by reducing the disulfide bond of the reagent with DTT. Preliminary in vitro biological assays with azidelabeled and unlabeled cell lysates and a pure protein Nup62 showed that the Biotin-S-S-Phosphine reagent is highly reactive toward the free thiol groups of proteins. When a molecular tool with a disulfide linker is applied to the enrichment of the molecules of interest from other species, it is important to block the free-thiols of the sample using exhaustive alkylation prior to the Staudinger ligation reactions to restore the bioorthogonal nature of this reaction.

Ethyl 2,6-Di-O-benzyl-3-O-(3,4,6-tri-O-acetyl-2-deoxy-2-N-phthalimido-$\beta$-D-glucopyranosyl)-1-thio-$\beta$-D-galactopyranoside의 합성법의 개발 및 갈락토스 받게의 2,3,4-OH기들의 위치 선택성에 대한 연구 (A Facile Synthesis of Ethyl 2,6-Di-O-benzyl-3-O-(3,4,6-tri-O-acetyl-2-deoxy-2-N-phthalimido-$\beta$-D-glucopyranosyl)-1-thio-$\beta$-D-galactopyranoside and Studies on the Regioselectivity of 2,3,4-OH Groups of Galactosyl Acceptor)

  • 박정수;윤신숙;윤미경;전근호;남정이
    • 대한화학회지
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    • 제42권5호
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    • pp.549-558
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    • 1998
  • Campylobacter jejuni 그램 음성균의 O-antigen 부위를 구성하는 반복 단위 삼탄당 합성의 주요 중간체인 이당류들을 글루코스아민 주게와 갈락토스 받게를 ${\beta}(1{\rightarrow}3)$ 클리코시드 결합으로 연결함으로서 합성하였댜. 이들의 합성 과정에서 갈락토스 당 부위의 2, 3, 4 번 OH기들의 글루코스아민 받게에 대한 높은 위치선택성이 발견되었으며 이를 이용하여 2, 4번 OH에 대한 선택적 보호과정을 생략할 수 있었고 결과적으로 합성과정을 단축시킬 수 있었다.

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Screening System for Chitin Synthase II Inhibitors from Natural Resources and its Inhibitor Prodigiosin

  • Hwang, Eui-Il;Kim, Young-Kook;Lee, Hyang-Bok;Kim, Hong-Gi;Kim, Sung-Uk
    • Journal of Microbiology and Biotechnology
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    • 제10권2호
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    • pp.251-257
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    • 2000
  • Chitin synthases are identified as key enzymes of chitin biosynthesis in most of the fungi. Among them, chitin synthase II has been reported to be and essential enzyme in chitin biosynthesis, and exists as a membrane-bound form. To search and screen new antifungal agents from natural resources to inhibit chitin synthase II, the assay conditions were established using the enzyme isolated from Saccharomyces cerevisiae ECY38-38A(pAS6) that overproduces only chitin synthase II. This enzyme was activated only by partial proteolysis with trypsin. Its actibity reached the maximum at $80{\;}\mu\textrm{g}/ml$ of trypsin and was strongly stimulated by 2.0 mM $Co^{2+}$, 1.0 nM UDP-[$^{14}C$]-GicNAc, and 32 mM free-GlcNAc. Under these assay conditions, the highest chitin synthase II activity was observed by incubation at $30^{\circ}C$ for 90 min. However, and extremely narrow range of organic solvents up to as much as 25% of DMSO and 25% of MeOH was useful for determining optimal assay conditions. After a search or potent inhibitors of chitin synthase II from natural resources, prodigiosin was isolated from Serratia marcescens and purified by solvent extration and silica gel column chromatographies. The structure of prodigiosin was determined by UV, IR, Mass spectral, and NMR spectral analyses. Its molecular weight and formula were found to be 323 and $C_{20}H_{25}N_{3}O$, respectively. Prodigiosin ingibited chitin synthase II by 50% at the concentration of $115{\;}\mu\textrm{g}/ml$.

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A Real-Time PCR Assay for the Quantitative Detection of Ralstonia solanacearum in Horticultural Soil and Plant Tissues

  • Chen, Yun;Zhang, Wen-Zhi;Liu, Xin;Ma, Zhong-Hua;Li, Bo;Allen, Caitilyn;Guo, Jian-Hua
    • Journal of Microbiology and Biotechnology
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    • 제20권1호
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    • pp.193-201
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    • 2010
  • A specific and rapid real-time PCR assay for detecting Ralstonia solanacearum in horticultural soil and plant tissues was developed in this study. The specific primers RSF/RSR were designed based on the upstream region of the UDP-3-O-acyl-GlcNAc deacetylase gene from R. solanacearum, and a PCR product of 159 bp was amplified specifically from 28 strains of R. solanacearum, which represent all genetically diverse AluI types and all 6 biovars, but not from any other nontarget species. The detection limit of $10^2\;CFU/g$ tomato stem and horticultural soil was achieved in this real-time PCR assay. The high sensitivity and specificity observed with field samples as well as with artificially infected samples suggested that this method might be a useful tool for detection and quantification of R. solanacearum in precise forecast and diagnosis.

얼굴의 물리적 특징 분석 및 얼굴 관련 감성 어휘 분석 - 20대 한국인 여성 얼굴을 대상으로 - (The analysis of physical features and affective words on facial types of Korean females in twenties)

  • 박수진;한재현;정찬섭
    • 인지과학
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    • 제13권3호
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    • pp.1-10
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    • 2002
  • 본 연구는 복잡한 얼굴 자극을 구성하고 있는 물리적인 특징들을 추출하여 얼굴을 수치 구조면에서 분석하고, 얼굴에서 파악되는 감성과 그들 간의 관계를 파악하기 위해 수행되었다. 이를 위해 본 연구에서는 먼저 얼굴 내부에 36개의 세부 요소들 및 요소들 간 관계를 설정하였다. 또한 얼굴 외곽형의 분류를 위해 얼굴 윤곽선 부위에 14개의 특징점을 찍고 코끝에서부터 이들 지점까지의 거리를 측정하였다. 사람마다 기본적인 얼굴 크기가 다르다는 점을 감안하여 이들 특징값들 중 비율값을 제외한 길이값들을 얼굴 좌우폭 또는 얼굴 상하길이를 기준으로 정규화(normalization)하였다. 그런 다음 35개의 얼굴 내부 특징요소들과 다섯 가지 얼굴 외곽형을 입력값으로 하여 주성분분석(PCA: principal component analysis)을 실시하였으며, 그 결과 얼굴의 물리적 특징 요소들은 얼굴외곽형 성분, 눈 세로 성분, 가로 성분, 눈썹부위 성분의 네 성분으로 대략 묶일 수 있었다. 여기에 한 개의 성분을 더하여 다섯 개의 요인점수를 기반으로 얼굴에 대한 5차원 공간을 가정하였다. 이 공간에서 얼굴을 고루 선정하되 해당 얼굴이 있다고 보기 어려운 영역은 제외하고 평균에 해당하는 얼굴을 추가하여 총 30가지 대표 얼굴 유형을 선정하였다. 다른 한편에서는 얼굴의 감성 구조를 파악하기 위하여 잡지와 설문을 통해 어휘를 수집하고 이를 정리하였다. 요인분석(factor analysis)과 다차원척도 분석(MDS: multidimensional staling) 결과 얼굴과 관련된 감성 어휘는 '날카롭다-부드럽다', '앳되다-성숙하다'의 2차원 공간에서 표현될 수 있었다.>$H_2O$/g membrane, 고정이온농도가 5.25 meq/g $H_2O$인 PVA/PAA-$160^{\circ}C$ 15% 막으로 예측된다. 첨가시에 무첨가시보다 접착정도가 더 높았으며, 가장 높은 접착율은 $\beta$-GlcNAc'ase 첨가시 나타났다. 또한 모든 glycosidase 처리시 2시간 배양한 정자보다는 배양하지 않은 정자에서 투명대에 대한 접착정도가 높게 나타났으며, $\alpha$-D-mannosidase의 처리시 유의적인 차이를 보였다 (P<0.05). 본 연구의 결과, $\beta$-GlcNAc'ase가 주로 돼지정자의 원형질막내에 존재하는 것으로 추측되며, 배양된 정자에 의한 투명대 접착정도와 침입율이 낮았음에도 불구하고 glycosidase activity가 증가하는 것으로 나타났다. 마련되어져야 할 것으로 판단되어진다. 와이어형, 기본형의 순으로 작게 나타났다.한 인자로 제시 되었다. 따라서 채식을 하는 폐경 후 여성의 경우 골격건강을 위하여 단백질의 급원이 되는 식품의 섭취에 더욱 관심이 필요한 것으로 보여 진다. 그러나 본 연구의 경우 대상자의 수가 적은 제한점이 있기 때문에 보다 많은 연구가 계속적으로 수행되어야 할 것으로 생각된다.reas(RW-2 and RW-3), lower part of the dam (RW-1) and seawater areas(RW-4 and RW-5).하는 비율이 가장 높았다. 에너지 섭취를 고려한 INQ는 칼슘과, 비타민 A는 남녀 모두, 비타민 B$_2$는 여자가

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