Abstract:
PURPOSE: A serine palmitoyl transferase coding gene derived from Pichia ciferrii and a tetraacetyl phytosphingosine(TAPS) producing method using the same are provided, thereby tetraacetyl phytosphingosine(TAPS) can be mass produced with low costs. CONSTITUTION: The gene LCB2 encoding serine palmitoyl transferase and derived from Pichia ciferrii (ATCC 14091) is represented by sequence ID No. 1 described as in the description. The expression vector prACL2(KCTC-0468BP) having an endonuclease map of Fig. 3 contains the gene LCB2, CYHr gene being resistant to cycloheximide, and ribosome DNA derived from Pichia ciferrii, wherein the ribosome DNA comprises a 0.6kb non transcribed region which is obtained by cleavage with HindIII/EcoRV. A transformant is produced by transforming Pichia ciferrii with the expression vector prACL2(KCTC-0468BP). Tetraacetyl phytosphingosine(TAPS) which is a raw material of ceramides is produced by incubating the transformed Pichia ciferrii and extracting TAPS from the fermented culture, wherein ceramides are used in protecting the skin and maintaining the humidity of the skin.
Abstract:
PURPOSE: Provided is an expression plasmid for Pichia ciferrii to insert targeted genes as many as possible into the strain when transformation of Pichia ciferrii is required. CONSTITUTION: The expression plasmid for Pichia ciferrii is obtained by the next steps of: i) separating the gene of ribosome protein L41 of sequence ID. No. 1 from Pichia ciferrii; ii) making the L41 gene resistant to cycloheximide and manufacturing plasmid pCYH1.9¬r to select transformants; iii) separating ribosome DNA and making plasmid prDX9.0 to insert targeted genes into chromosome more effectively; and iv) making a recombinant plasmid by treating ribosome DNA with restriction enzyme.
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:
본 발명은 피치아 시페리 ( Pichia ciferrii ) ATCC 14091 유래의 글리세르알데히드-3-인산 탈수소효소(GAPDH : glyceraldehyde-3-phosphate dehydrogenase) 프로모터 유전자, 이 프로모터 유전자를 포함하는 플라스미드 prACGL2(KCTC-0498BP)와 prHECGL2(KCTC-0511BP), 이에 의해 형질전환된 피치아 시페리 형질전환체 및 이를 배양하여 세라미드의 원료인 테트라아세틸 피토스핑고신(TAPS : tetraacetyl phytosphingosine)을 대량 생산하는 방법을 제공한다. 본 발명에 의해 제공되는 플라스미드 prACGL2(KCTC-0498BP) 또는 prHECGL2(KCTC-0511BP)에 의해 형질전환된 형질전환체는 모균주 KFCC-10937에 비하여 최소 2.1배의 TAPS 생산능을 갖고 있다.
Abstract:
PURPOSE: Provided are an expression vector for Hansenula polymorpha which introduces foreign genes in multiple rows and a method for easily selecting Hansenula polymorpha transformants. CONSTITUTION: An expression vector for Hansenula polymorpha is inserted into cells in multiple rows. At 3'-terminal, the vector has repeated segments of 5'-GGGTGGCG-3', self-replicable segment, promoter, and selective genes for nutritional requirement etc. And a method for selecting Hansenula polymorpha transformants is comprised of the next steps of: i) transforming Hansenula polymorpha with the expression vector; ii) cultivating and selecting transformants in a minimal medium; iii) cultivating the transformants continuously in a complex medium to stabilize vectors; and iv) cultivating stabilized transformants in a selective medium containing antibiotics to select transformants resistant to the antibiotics.
Abstract:
PURPOSE: Provided are multiple tandem integrating autonomously replicating sequence(ARS) originated from Hansenula polymorpha and an expression vector including the same. The vector including this sequence is very useful for the production of an exogenous protein from Hansenula polymorpha due to its high efficiency and stability of transformation. CONSTITUTION: A vector for inserting polynucleotide coding hetero protein into chromosome of Hansenula polymorpha is composed of the followings: (a) multiple tandem integrating ARS including repetitive sequence of 5'-GGGTGGCG-3' at 3' terminal originated from Hansenula polymorpha DL-1(ATCC 26012); (b) a promotor; (c) polynucleotide coding hetero protein located at downstream of the promotor; and (d) a terminator located at downstream of the nucleotide.
Abstract:
PURPOSE: Glyceraldehyde-3-phsphate dehydrogenase (GAPDH) promoter gene isolated from GAPDH gene coding glyceraldehyde-3-phsphate dehydrogenase derived from pichia ciferrii is able to increase yield of tetraacetyl phytosphingosine(TAPS) by amplifying LCB2 gene. CONSTITUTION: Tetraacetyl phytosphingosine(TAPS) is produced by cultivating transformant pichia ciferrii transformed with plasmid containing ribosome DNA derived from pichia ciferrii, CYH gene with resistance to antibiotic cycloheximide, glyceraldehyde-3-phsphate dehydrogenase(GAPDH) promoter gene, LCB2 gene coding serine palmitoyl transferase derived from pichia ciferrii and by extracting tetraacetyl phytosphingosine from culture media.
Abstract:
PURPOSE: A method is provided to culture and generate efficiently a human serum albumin by minimizing the analysis of the albumin being revealed from a transformed body. CONSTITUTION: A method for generating a re-combined human serum albumin comprises: assembling a revealing vector containing an existent promoter being connected to a human serum albumin cDNA to a yeast saccharomyces cerevisiae; introducing the assembled material to the yeast saccharomyces cerevisiae for forming a transformed yeast strain; fermenting and culturing for revealing efficiently the human serum albumin. Herein, a buffering liquid or a nitrogen is added to the transformed yeast strain for maintaining the pH of the culturing for 5 ¯ 6 for minimizing the analysis of the albumin being revealed by fermenting and culturing.
Abstract:
본 발명은 한세눌라 폴리모르파(Hansenula polymorpha)의 글리세르알데히드-3-인산 탈수소효소(GAPDH) 유전자, GAPDH 프로모터 및 이 프로모터를 함유하는 발현 벡터에 관한 것으로, 본 발명에 따른 GAPDH 프로모터는 강력한 구성적 발현 프로모터로서 탄소원에 따른 별도의 발현 유도가 필요하지 않으므로 한세눌라 폴리모르파에서 외래 단백질을 발현시키는데 매우 유용하다.