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강병태(Byung Tae Kang),노동현(Dong Hyun Roh),주길재(Gil Jae Joo),이인구(In Koo Rhee) 한국응용생명화학회 1996 Applied Biological Chemistry (Appl Biol Chem) Vol.39 No.6
In order to investigate the function of xylA promoter(Pxyl) as regulatory region Pxyl-lacZ fusion gene was constructed by the insertion of xylA promoter to the multiple cloning site of upstream of lacZ gene in a multicopy numbered plasmid pMC1403 containing promoterless lac operon, which was designated pMCX 191, and Pxyl-lacZ fragment from pMCX191 was inserted to low copy numbered plasmid pLG339, designated pLGX191. The expressions of β-galactosidase in these recombinant plasmids containing Pxyl-lacZ fusion gene were induced strongly by the addition of xylose, repressed by the addition of 0.2% glucose in the presence of xylose. The catabolite repressions were derepressed by the addition of 1 mM cAMP as same as native xylA gene. The fragment of xylA promoter was partially deleted from the upstream of xylA promoter by exonuclease Ⅲ to investigate the regulation site of xylA promoter and the degrees of deletion derivatives of xylA promoter were analyzed by the DNA base sequencing. By the investigations of the induction by xylose, repression by glucose and derepression by CAMP on xylose isomerase production, the regulation site of xylA promoter may be located in segment between 165 and -59 by upstream from the initiation site of xylA translation.
김병수,이미경,김종환,김주항,박용준,이승우,안희정,정재복,서창옥,정현철,이광길,노재경 대한내과학회 1988 대한내과학회지 Vol.35 No.5
Metastases to the oral region by primary hepatocellular carcinoma are very rare; to our knowledge only 23 cases have been reported. However, although these mandibular or gingival metastases are rare, this diagno- sis must be considered when an oral tumor has a metastatic appearance, especially in cirrhotic patients or heavy alcoholics. The lesion is extremely hemorrhagic and this characteristics is practically constant, so precautions must be taken before any procedure, even a biopsy, is done, The prognosis remains grave, but appropriate local radiotherapy to the oral region and systemic control with chemotherapy and mandiblectomy can result in an improved quality of survival. In conclusion, this report may be valuable in presenting an unusual occurrence of primary hepatocellular carcinoma with metastasis to the oral cavity.
박준길(Jun-Gil Park),서상호(Sang-Ho Suh),노형운(Hyung-Woon Roh),이병권(Byung-Kwon Lee),권혁문(Hyuck-Moon Kwon) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
The distributions of the wall shear stress and OSI in the bifurcated artery are investigated under physiological flow condition. The present study is also aimed to establish the atherogenic risk assessment according to the change of whole blood viscosity. Computer Simulations were performed to obtain the values of wall shear stress and OSI in the bifurcated artery. The generation of atherosclerosis are related to not only biochemical reaction between blood and blood vessel but also the hemodynamic factors like flow separation and oscillatory wall shear stress.
대장균의 Xylose Isomerase 유전자의 발현조절
이인구,노동현,강병태,주길재 경북대학교 유전공학연구소 1992 遺傳工學硏究所報 Vol.7 No.1
In order to characterize the regulation of the expression of xylA gene, xylA promoter-lacZ(Pxyl-lacZ) fusion gene was constructed on the multicopy plasmids. The expression of β-galactosidase in fusion genes was induced by xylose and repressed by glucose. As derepression shown in xylA gene, the glucose repression of β-galactosidase in Pxyl-lacZ fusion gene was reversed by the addition of cAMP. The expression of Pxyl-lacZ fusion gene was controlled in xylA promoter region. The regulation site of xylA promoter was located on DNA segement between -155 and -51 bp upstream from the initiation codon of xylA translation. The specific sequence between -113 and -98 bp at upstream may be serves as binding site for CRP-cAMP complex because its sequence showed homology of the consensus sequence for the binding of CRP-cAMP complex.