• Title/Summary/Keyword: Expression Forms

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Soluble Expression of Human Angiostatin and Endostatin by Maltose Binding Protein (MBP) Fusion in E. coli (Maltose Binding Protein 융합단백질에 의한 인간유래의 앤지오스타틴과 앤도스타틴의 대장균에서 수용성 단백질발현)

  • Paek, Seon-Yeol;Choi, Shin-Geon
    • Journal of Industrial Technology
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    • v.28 no.B
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    • pp.59-63
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    • 2008
  • Rapid production of therapeutic proteins such as angiostatin and endostatin angiogenic inhibititors has been highly demanded for cancer treatment. In this regard, recombinant human angiostatin and endostatin were successfully expressed as soluble forms by maltose binding protein (MBP)-mediated fusion expression in Escherichia coli. PCR amplified, angiostatin and endostatin genes from human placenta cDNA library were inserted into an expression vector pMAL-c2e to construct prokaryotic expression vectors, pMAL-c2e/AS and pMAL-c2e/ES, respectively. Recombinant angiostatin and endostatin were efficiently expressed in E. coli origami (DE3) after IPTG induction and protein expression were confirmed by SDS-PAGE analyses. The expressed recombinant proteins were purified near homogenity using an amylose affinty column chromatography. In contrast that previous E. coli expressions were all insoluble, our results first time demonstrated that MBP fused human angiostatin and endostatin were soluble in E. coli.

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A Study on the Transborder Characteristics of Forms in Baroque Space (바로크공간의 탈경계적 조형 특성에 관한 연구)

  • Han, Myoung-Sik
    • Korean Institute of Interior Design Journal
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    • v.24 no.5
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    • pp.21-30
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    • 2015
  • The visual expression system of space realized in Baroque aesthetics is basically grounded on the philosophical view to the world of the time, that is to say the changes of the thinking system in the Renaissance and ontology based on it. Structural aesthetics in Baroque freed from Plato's system of harmony but grounded on Leibniz's process philosophy formed a crucial background to highlight the formal nature of the whole and build a structure based on the inclusive principle of formativity. Also, to solve problems to realize the order and consistency of forms from the whole, Baroque adopted the nonlinear and nonphysical formative system as the principle of building space in works of art. Combining the order system of nature in the Renaissance with manneristic dynamicity as well as formative principle taking shape geometrically, it did establish a variety of aesthetic concepts based on the results of infiniteness and exaggeration expressed from the two forces, the Renaissance and mannerism. This study has found that such Baroque aesthetics did overcome classical planeness and draw continuous mobility from the structures and forms based on that with the transborder concepts of structures, the components of space, as an ultimate system of formative expression. Moreover, this author has drawn and analyzed with the cases of the 17th-century art and architecture the transborder elements manifesting the nature of diverse formative visual elements produced in artistic expressions with that principle of aesthetics, that is the intangible concept of Baroque. Based on that, this researcher intends to come up with technical solutions to solve a lot of environmental and architectural problems we are severely facing nowadays in terms of environmental, physical, and emotional aspects with the theoretical clues and results acceptable to this contemporary era.

Expressional Characteristics of Modern Fashion Applied Superimposition (중첩을 응용한 현대 패션의 표현적 특성)

  • Kim Hyun-Mi;Yim Ji-Young;Jang Ae-Ran
    • Journal of the Korean Society of Costume
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    • v.56 no.1 s.100
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    • pp.121-130
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    • 2006
  • Superimposition is a transforming technique that can facilitate the creation. Superimposition in previous studies, however, has only been fragmentary described as an expression technique, so the studies have not been conducted on the basis of its aesthetic value. The purpose of this study is to investigate how superimposition is applied and expressed in terms of forms of modern fashion based on multi-dimensional features of design processing. The codes of togetherness, ambivalence, sense of space and tension in dress were determined by using the expressional Superimposition. The forms of superimposition were limited to superimposition of clothing, superimposition of body and clothing and superimposition of body and Phenomenal body. This study found that superimposition has developed, in fashion forms/types, a new 'form' by overlapping various forms and thus provides a visual shock and a sense of mystery by using mismatched and arbitrary properties among the forms. Such a superimposition influences a methodology of fashion design through a designer's subjective tendencies, as well as influences a change in the view of the world. Also, a superimposition is expected to have a definite influence on new fashion trends.

A Study on Ex-Formal Expression Observed in Space.Form of Korean Modern Architecture (한국 현대건축의 공간.형태에서 나타난 탈정형적 표현에 관한 연구)

  • Jang, Hoon-Ick
    • Journal of The Korean Digital Architecture Interior Association
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    • v.9 no.3
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    • pp.85-93
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    • 2009
  • In this study, the ex-formal expressions observed in space form of Korean modern architecture are distributed for characteristic analysis based on the period and type. The result of the study is certified by the work analysis and the result is as follows. Initially, due to the limited materials and influence of western brutalism, the works developed during 1960~70 tend to be plastic and contain expressionism. Around 1980's, the works tend to show forms of amusement and popularity. In 1990's the works show significance in deconstructive expression. From after 2000, ecological concept of architecture was introduced and organic expression started increasing Secondly, the ex-formal expressions are found to be in four different types. The organic expression is shown regardless of the period. In modern days, not only the physical properties of materials, but also the ecological concept is combined with the organic expression and is in increase. The plural expression started appearing after the 1980's and the sculptural diversity is enhancing with the addition of decorative factors or modification of geometrical form. The ex-construction and deconstructive expression show significance in some characteristics such as folding, inclination, and geometrical explosion. The free form and nonlinear expression tend to increase dramatically based on the development of structure technology as well as execution and introduce of the digital design technique.

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Variations in Protein Glycosylation in Hansenula polymorpha Depending on Cell Culture Stage

  • Kim, So-Young;Sohn, Jung-Hoon;Pyun, Yu-Ryang;Choi, Eui-Sung
    • Journal of Microbiology and Biotechnology
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    • v.17 no.12
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    • pp.1949-1954
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    • 2007
  • A simple way to prevent protein hyperglycosylation in Hansenula polymorpha was found. When glucose oxidase from Aspergillus niger and carboxymethyl cellulase from Bacillus subtilis were expressed under the control of an inducible methanol oxidase (MOX) promoter using methanol as a carbon source, hyperglycosylated forms occurred. In contrast, MOX-repressing carbon sources (e.g., glucose, sorbitol, and glycerol) greatly reduced the extent of hyperglycosylation. Carbon source starvation of the cells also reduced the level of glycosylation, which was reversed to hyperglycosylation by the resumption of cell growth. It was concluded that the proteins expressed under actively growing conditions are produced as hyperglycosylated forms, whereas those under slow or nongrowing conditions are as short-glycosylated forms. The prevention of hyperglycosylation in the Hansenula polymorpha expression system constitutes an additional advantage over the traditional Saccharomyces cerevisiae system in recombinant production of glycosylated proteins.

The Study on the Added Moment of Inertia of Two Dimensional Cylinder induced by the Torsional Vibration coupled with the Flexural Vibration (자유수면(自由水面)에서의 비틀림 수평(水平)굽힘의 연성진동(連成振動)을 하는 선체단면형(船體斷面形)의 이차원적(二次元的) 부가관성(附加慣性) Moment에 관(關)한 연구(硏究))

  • S.S.,Kim
    • Bulletin of the Society of Naval Architects of Korea
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    • v.7 no.2
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    • pp.3-18
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    • 1970
  • An investigation was made for the added mass moment of inertia induced by the rotational motion of the cylinder with hull section on water in order to obtain the information to estimate the natural frequency of the torsional vibration of ships. The special consideration to the effect of the draught upon the added mass moment of inertia is taken into account in the study. In this paper, the general expression for the added mass coefficients of moment of inertia of arbitary two dimensional forms induced by the torsional vibration, was derived by the author. Hence, the coefficients for these forms are represented as functions of parameters, the section area coefficient and draft beam ratio, from which the added mass coefficients for arbitrary forms can be obtained. The result was shown in a chart for estimation of the added mass moment of inertia induced by the torsional vibration, as first trial, for the convenience of practical use.

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Anger Expression Style and Risk Factors for Stroke (성인의 분노표현 방식과 뇌졸중 위험 요인)

  • Nam, Kyoung-A
    • Journal of East-West Nursing Research
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    • v.17 no.1
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    • pp.16-23
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    • 2011
  • Purpose: As anger may be strongly related to stroke, this study examined the relationship between anger expression style (anger-in, anger-out, anger-control) and risk factors for stroke to investigate the possible attribution of anger expression style to stroke incidence. Methods: The cross sectional study design was employed. The 291 participants signed consent forms and completed questionnaires including the anger expression style scales and risk factors for stroke. Data were analyzed using descriptive statistics, t-test and One-way ANOVA. Results: The highest score among anger expression styles of the participants was from anger-control. Participants with higher mean value of anger-out were current non-smokers, doing regular exercise, having scores above 23 in Body Mass Index, having scores above 90 cm (male) or 80 cm (female) in abdominal circumference, and having scores below 85 mmHg in diastolic blood pressure. Participants with more than 5 risk factors to stroke had the highest score of anger-in. Conclusion: The results of this study implied anger expression style was psychological risk factor for stroke. Further studies to differentiate the anger expression style contributing to the risk of stroke are needed with a longitudinal study design.

A Study on the Transformal Usage of Architecture Expression Since 1970s (1970년 이후의 건축표현변용방식에 관한 연구)

  • Kim, Yong-Kyu;Park, Young-Ho
    • Korean Institute of Interior Design Journal
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    • v.19 no.1
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    • pp.75-84
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    • 2010
  • This study will establish the transformal characteristics of architectural visual information by investigating: how contemporary architects perceive and process multifaceted architectural information via the expression media since 1970s. The purposes and results of this study are summarized as follows: This study established the contemporary transformal characteristics by comparing the expression methods of traditional architects with the transformal characteristics of visual information derived from the contemporary architectural expression media. In a pluralistic information society, the expression methods of the past, which recognize space as a stationary, unidimensional visual point on a drawing surface, is now changing to the mixed, multidimensional expression methods that connect various visual points on a limited drawing surface. Furthermore, the rapid advancement of digital media is changing, from a method which simply arranges visual information, to a flexible visual tool which can process architecture sequentially and simultaneously. As the communication structure of architecture is moving toward an individual-centered two-way communication type, the information delivery method is used to visualize conceptual, inferential information, rather than visualizing realistic information which simply records facts. In the past, multidimensional, non-linear forms could not be processed by the conventional design processes and sketch work, but now they can be expressed via digital media.

Prolonged Gene Expression Following Erythrocyte-Mediated Delivery of TRAIL Plasmid DNA (혈구세포 수송체로 투여된 트레일 유전자의 혈중 발현 지속 효과)

  • Byun, Hyang-Min;Kwon, Kyoung-Ae;Shin, Jee-Young;Oh, Yu-Kyoung
    • Journal of Pharmaceutical Investigation
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    • v.33 no.4
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    • pp.261-265
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    • 2003
  • Tumor necrosis facto-related apoptosis-inducing ligand (TRAIL) is a recently identified member of the tumor necrosis factor cytokine superfamily. TRAIL has been shown to induce apoptosis in a number of tumor cells whereas cells from most of normal tissues are highly resistant to TRAIL-induced apoptosis. These observations have raised considerable interest in the use of TRAIL in tumor therapy. In this study we report the biodistribution fates and serum expression pattern of plasmid DNA encoding TRAIL (pTRAIL) delivered in erythrocyte ghosts (EG). pTRAIL was loaded into EG by electroportion in a hypotonic medium The mRNA expression of pTRAIL was prolonged following delivery in EG-encapsulated forms. EG containing pTRAIL showed significant levels of mRNA expression in the blood over 9 days. The organ expression patterns of pTRAIL delivered via EG, however, did not significantly differ from those of naked pTRAIL, indicating that the expression-enhancing effect of EG containing pTRAIL was localized to the blood. These results suggest that pTRAIL-loaded EG might be of potential use in the treatment of hematological diseases such as TRAIL-sensitive leukemia.

Expression of a Recombinant Cry1Ac Crystal Protein Fused with a Green Fluorescent Protein in Bacillus thuringiensis subsp. kurstaki $Cry^-B$

  • Roh Jong Yul;Lee In Hee;Li Ming Shun;Chang Jin Hee;Choi Jae Young;Boo Kyung Saeng;Je Yeon Ho
    • Journal of Microbiology
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    • v.42 no.4
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    • pp.340-345
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    • 2004
  • To investigate the co-expression and crystallization of a fusion gene between the Bacillus thuringiensis crystal protein and a foreign protein in B. thuringiensis, the expression of the Cry1Ac fused with green fluorescent protein (GFP) genes in a B. thuringiensis $Cry^-B$ strain was examined. The cry1Ac gene was cloned in the B. thuringiensis-E. coli shuttle vector, pHT3101, under the control of the native cry1Ac gene promoter, while the GFP gene was inserted into the XhoI site upstream of the proteolytic cleavage site, in the middle region of the crylAc gene (pProAc-GFP). The B. thuringiensis $Cry^-B$ strain carrying pProAc-GFP (ProAc-GFP/CB) did not produce any inclusion bodies. However, the transformed strain expressed fusion protein forms although the expression level was relatively low. Furthermore, an immu­noblot analysis using GFP and Cry1Ac antibodies showed that the fusion protein was not a single spe­cies, but rather multiple forms. In addition, the N-terminal fragment of Cry1Ac and a non-fused GFP were also found in the B. thuringiensis $Cry^-B$ strain after autolysis. The sporulated cells before autolysis and the spore-crystal mixture after autolysis of ProAc-GFP/CB exhibited insecticidal activities against Plutella xylostella larvae. Accordingly, the current results suggest that a fusion crystal protein produced by the transfomant, ProAc-GFP/CB, can be functionally expressed but easily degraded in B. thuring­iensis.