摘要:
Provided is a recombinant Hansenula polymorpha-based high dosage hepatitis B vaccine, an HBsAg pure stock solution yield of a recombinant Hansenula polymorpha fermentation broth used for producing the hepatitis B vaccine being 300 mg/L-400 mg/L.
摘要:
The production of natural delta-decanolide and/or delta-dodecanolide or mixtures thereof, by means of the biohydrogenation of a substrate containing the corresponding unsaturated lactones, delta-decen-2-olide and delta-dodecen-2-olide, respectively, and mixtures thereof, is performed by means of the use of a microorganism chosen from the group consisting of Saccharomyces delbrueckii, Pichia ohmeri, Hansenula anomala, Pichia stipitis, Debaromyces hansenii, Zymomonas mobilis, Zygosaccharomyces rouxii, Schawnniomyces occidentalis, Sarcina lutea and Geotrichum candidum.
摘要:
The invention relates to DNA-molecules comprising DNA-sequences encoding control regions and the structural gene for a protein having formate dehydrogenase (FMDH) activity. Said DNA-molecules may be combined with DNA-sequences encoding foreign genes so as to bring these genes under the stringent control of the regulation of the FMDH regulatory sequences and/or may be combined to DNA-sequences coding for secretory signals. The invention further relates to recombinant vectors containing said DNA-molecules and micro-organisms containing said vectors or DNA-molecules. Furthermore, the invention relates to a process for producing a useful substance by producing this substance by culturing said micro-organisms and recovering the substance.
摘要:
Disclosed is a process for preparing 2-halogeno-3-hydroxy-3-phenylpropionic acid ester compounds represented by the formula (I): ##STR1## wherein Ring A is a phenyl group which may be substituted, R.sup.1 is an ester residue, and X is a halogen atom, which comprises permitting an enzyme having the ability of stereoselectively reducing oxo group to hydroxy group to act on 2-halogeno-3-oxo-3-phenylpropionic acid ester compounds represented by the formula (II): ##STR2## wherein Ring A, R.sup.1 and X have the same meanings as defined above.
摘要:
Process for producing S-adenosyl-L-homocysteine, which comprises reacting adenosine with homocysteine by contacting them in an aqueous medium in the presence of cells or treated cells of a microorganism of a specified genus having the ability to synthesize S-adenosyl-L-homocysteine from adenosine and homocysteine, and collecting the S-adenosyl-L-homocysteine synthesized.
摘要:
Novel DNA sequences which are responsive to the presence of methanol, catabolite non-repressing carbon sources and carbon source starvation are provided. In addition, novel constructs including these DNA sequences, as well as transformed organisms therewith are provided. Processes for producing the DNA sequences and constructs of the invention are detailed. The production of polypeptide product under the control of the regulatory regions of the invention is demonstrated.
摘要:
A process for the preparation of a 15 .alpha.-hydroxyprostaglandin intermediate of the formula ##STR1## wherein R.sub.1 is phenoxymethyl, phenoxymethyl substituted on the phenyl moiety by halogen or trifluoromethyl, or alkyl of 1-5 carbon atoms, andR.sub.2 is hydrogen, acetyl, benzoyl or p-phenylbenzoyl,which comprises stereospecifically microbiologically reducing a corresponding 15-ketone of the formula ##STR2## with a strain of the microorganism Kloeckera, Saccharomyces or Hansenula.
摘要:
Method for the biochemical isolation of 1-menthol. Specifically, an improved method for the optical resolution of racemic menthol utilizing an enzyme, carboxylic ester hydrolase, which is produced by micro-organism belonging to the class of Candida, Saccharomyces, Hansenula, Rhodotorula, Torulopsis, Schizosaccharomyces, Pichia, Sporobolomyces, Debaryomyces, Nadsonia, Trichosporon, Brettanomyces, and Cryptococcus. The 1-menthol may be utilized in perfumes, medicines, etc.
摘要:
Pichia pastoris alcohol dehydrogenase 2 (ADH2) promoter variants include at least one of the specified modifications on wild-type Pichia pastoris ADH2 promoter (SEQ ID NO: 1). The modification includes one of the following mutations: integration of a Cat8 transcription factor binding site (TFBS), particularly integration of SEQ ID NO: 3 or other gene sequences that show at least 80% similarity with this sequence, at any positions within nucleotides a) 647 to 660; b) 739 to 752; c) 1 to 948; and d) mutations specified with SEQ ID NO: 2 within nucleotides 15 to 848 separately and combinations thereof.
摘要:
Antimicrobial modified defensin or defensin-like peptides, modified C-terminal fragments of a defensin or defensin-like peptides and nucleic acids encoding the same are disclosed. Compositions comprising the defensin variant peptides and methods of their use to control microbial infections of plants and vertebrate subjects as well as contamination of feedstuffs and foodstuffs are also disclosed.