Abstract:
본 발명은 피치아 시페리(Pichia ciferrii)용 발현 플라스미드에 관한 것으로, 더욱 상세하게는 피치아 시페리 유래의 리보좀 DNA, 항생제 시클로헥시미드(cycloheximide)에 대해 저항성을 갖는 CYH r 유전자, 및 목적 유전자로 구성되는 플라스미드에 관한 것이다. 본 발명에 의해 제공되는 플라스미드를 이용하면 피치아 시페리에의 형질전환 효율이 높다.
Abstract:
본 발명은 메탄올 자화 효모(methylotrophic yeast)로부터 이종단백질을 생산하는 방법에 관한 것으로, 이종 단백질 유전자를 함유하는 재조합 메탄올 자화 효모 배양배지에 오일을 첨가하여 배양하는 방법에 의하면 이종 단백질의 생산성을 향상시킬 수 있으며, 특히 메탄올 옥시다제(Methanol Oxidase : MOX) 프로모터와 MOX 터미네이터 서열 및 히루딘 유전자를 포함하는 발현벡터로 형질전환된 메탄올 자화 효모를 이용하면 히루딘을 효율적으로 생산할 수 있다.
Abstract:
본 발명은 히루딘을 히루딘을 정제하는 방법을 제공한다. 본 발명의 방법은 조(粗) 히루딘액을 금속 이온으로서 구리이온을 사용하고 용리액으로서 인산염 완충액을 사용하는 금속이온 친화성 크로마토그래피를 이용하여 정제함을 특징으로 한다. 본 발명의 방법에 의하면 종래의 히루딘의 정제방법에 비해 저렴하고 간단하게 히루딘을 고순도로 정제할 수 있는 장점이 있다.
Abstract:
PURPOSE: A 4-aminopiperidine analogue and a producing method thereof are provided, therefore the compound can be useful as a ligand of a muscarine receptor, and it is thus used in study on Alzheimer disease. CONSTITUTION: The 4-aminopiperidine analogue is represented by formula(I), wherein R1, R2, R3, R4, R5, R6 and R7 are hydrogen, cycloalkyl having carbon number of 1 to 6, alkoxy, halogen, hydroxy, hydroxymethyl, aryl, heteroaryl, amino, alkylamino, alkenyl, carbonyl or hetero ring having carbon number of 5 to 7 wherein aryl is a ring having 6 atoms, two rings having 10 atoms or a stable resonance form having double bond to adjacent carbon; heteroaryl is a single ring aromatic group having carbon number of 5 to 6 or a double ring aromatic group having carbon number of 10 in which the heteroaryl has at least one hetero atom of N, O or S; hetero ring consists of 5 to 7 atoms having 1 to 3 of N, O or S; X is carbon or sulfur; and n is an integer of 1 to 2 wherein n is 1 when X is carbon and is 2 when X is sulfur. The 4-aminopiperidine analogue is produced by reacting piperidine or amine(II) with piperazine with ketone(III) in the presence of 1 to 3 equivalent of acetic acid, 2 to 10 equivalent of reducing agent and solvent at room temperature for 3 to 24 hours to produce 4-aminopiperidine(I) and adding NaHCO3 solution and organic solvent to 4-aminopiperidine(I); and drying the extracted 4-aminopiperidine(I), dissolving it, adding 1 to 10 equivalent of hydrogen chloride to the solution, and separating, washing and drying the hydrochloride of 4-aminopiperidine.
Abstract:
PURPOSE: Provided are a vector including human epidermal growth factor(EGF) which promotes the growth of human epidermal cells and inhibits the secretion of gastric acid and a manufacturing method of EGF by using the vector. CONSTITUTION: The vector including EGF is manufactured by the steps of: inserting T-mox(MOX terminator) into a recognition site of pUC19 vector to prepare pUC-Tmox vector; inserting LEU2 gene into a recognition site of pUC-Tmox to prepare pUC-TaLE vector; inserting P-mox gene(MOX promotor), alpha pre-proleader(ppL) sequence and EGF gene into a recognition site of SalI of pUC-TaLE vector; cutting pU-EGF2 vector with EcoRI restriction enzyme; and inserting a fragment including P-mox/ppL/hEGF/T-mox into a recognition site of EcoRI of aP3 vector.
Abstract:
본 발명은 효모 한세눌라 폴리모르파 DL-1 유래의 MOX 프로모터와 알부민 자체의 분비 시그날을 포함하는 알부민 cDNA를 이용하여 발현벡터를 조립하고, 이를 효모 한세눌라 폴리모르파에 도입하여 조립된 발현벡터가 염색체에 삽입(integration)된 형질 전환 효모를 선별, 발효 배양시켜 인간 혈청 알부민을 고효율로 발현시킴을 특징으로 하는 인간 혈청 알부민의 제조 방법, 발현 벡터 및 형질전환 효모에 관한 것이다.
Abstract:
PURPOSE: Human serum albumin is over expressed in Hansenula polymorpha DL-1 transformed with HSA gene under the control of methanol oxidase gene promoter. CONSTITUTION: The invention is disclosed transformed yeasts Hansenula polymorpha DL-1 which has integrated HSA gene, isolated from human fetal liver cDNA library and removed 5'UTR without signal sequence, controlled by methanol oxidase gene promoter. Transformed yeast is cultured in YPM medium( 1 % of yeast extract, 2 % of Bacto peptone, and 2 % of methanol) at 37°C for 72 hrs. Methanol is supplied at every 12 hrs to keep the concentration 2 % of methanol in the medium constant after 24 hrs. The concentration of expressed HSA is 40-50 mg/l by western blotting compared with authentic standard HSA. This method also detects smaller degraded HSA proteins in the medium.
Abstract:
The hirudin expression vector pYEGa-HIR5 (KCTC 8518P) containing hirudin gene (I) consists of linked promoter GAL1-GAL10, alpha factor of yeasts (a on plasmid means alpha), peptide sequence for leu-asp-lys-arg which is hydrolyzed by KEX2 as operator endopeptidase and hirudin gene. The other plasmid pYEGa-HIR525 (KCTC 8519BP) (II) consists of GAL10 as promoter rather than GAL1-GAL10 of (I). (I) and (II) are useful for yeast expression to solve the problems which in E. coli the expressed hirudin is hydrolysed and the N-terminal methionine modified hirudin does not have the activity.