摘要:
It has been found that certain cells in culture can convert carbon available in the cell culture medium into isoprene These cells have a heterologous nucleic acid which is operably linked to a promoter and encodes an isoprene synthase polypeptide The isoprene produced in such a cultured medium can then be recovered and polymenzed into synthetic rubbers and other useful polymeπc matenals The synthetic isoprene containing polymers of this invention offer the benefit of being verifiable as to being denved from non- petrochemical based resources They can also be analytically distinguished from rubbers that come from natural sources The present invention more specifically discloses a polyisoprene polymer which is comprised of repeat units that are denved from isoprene monomer, wherein the polyisoprene polymer has delta 13C value of greater than -22%o This type of polyisoprene can be a αs-1 A- polyisoprene homopolymer rubber.
摘要:
Disclosed herein are mannanases from Paenibacillus or Bacillus spp , polynucleotides encoding the mannanases, compositions containing the mannanases, and methods of use thereof. Compositions containing mannanases are suitable for use as detergents and for cleaning fabrics and hard surfaces, as well as in a variety of other industrial applications.
摘要:
This invention relates to amylase polypeptides, and nucleic acids encoding the polpypeptides and uses thereof. The amylases of the present invention have been engineered to have more beneficial qualities. Specifically, the amylases of the current invention show an altered exospecifity.
摘要:
We describe a PS4 variant polypeptide derivable from a parent polypeptide having amylase activity selected from the group consisting of: (a) a polypeptide comprising an amino acid mutation at each of positions 33, 34, 121, 134, 141, 146, 157, 161, 178, 179, 223, 229, 272, 303, 307, 309 and 334; (b) a polypeptide comprising an amino acid mutation at each of positions 33, 34, 121, 134, 141, 145, 146, 157, 178, 179, 223, 229, 272, 303, 307 and 334; (c) a polypeptide comprising an amino acid mutation at each of positions 33, 34, 121, 134, 141, 146, 157, 178, 179, 223, 229, 272, 303, 307, 309 and 334; and (d) a polypeptide comprising an amino acid mutation at each of positions 3, 33, 34, 70, 121, 134, 141, 146, 157, 178, 179, 223, 229, 272, 303, 307, 309 and 334; with reference to the position numbering of a Pseudomonas saccharophilia exoamylase sequence shown as SEQ ID NO: 1 , uses of such a polypeptide as a food or feed additive, and nucleic acids encoding such.
摘要翻译:我们描述了可从具有选自以下的淀粉酶活性的亲本多肽衍生的PS4变体多肽:(a)包含位置33,34,121,134,141,146,157,161中的每一个的氨基酸突变的多肽 ,178,179,223,229,272,303,307,309和334; (b)包含位置33,34,121,134,141,145,146,157,177,179,223,229,272,303,307和334的氨基酸突变的多肽; (c)包含位置33,34,121,134,141,146,157,178,179,223,229,272,303,307,309和334的氨基酸突变的多肽; 和(d)包含位置3,33,34,70,121,134,141,146,157,178,179,223,229,272,303,307,309和334中的每一个上的氨基酸突变的多肽 ; 参考如SEQ ID NO:1所示的假单胞菌属(Saccharophilia)淀粉酶序列的位置编号,使用这样的多肽作为食品或饲料添加剂,以及编码其的核酸。
摘要:
We describe a PS4 variant polypeptide derivable from a parent polypeptide having non-maltogenic exoamylase activity, in which the PS4 variant polypeptide comprises an amino acid mutation at one or more positions selected from the group consisting of: 121, 161, 223, 146, 157, 158, 198, 229, 303, 306, 309, 316, 353, 26, 70, 145, 188, 272, 339, with reference to the position numbering of a Pseudomonas saccharophilia exoamylase sequence shown as SEQ ID NO: 1.
摘要翻译:我们描述了源自具有非麦芽糖外淀粉酶活性的亲本多肽的PS4变体多肽,其中PS4变体多肽在选自以下的一个或多个位置包含氨基酸突变:121 ,161,223,146,157,158,198,229,303,306,309,316,353,26,70,145,188,272,339,参考嗜糖假单胞菌(Pseudomonas saccharophilia)的位置编号 如SEQ ID NO:1所示的外切淀粉酶序列。 p>
摘要:
This invention relates to amylase polypeptides, and nucleic acids encoding the polpypeptides and uses thereof. The amylases of the present invention have been engineered to have more beneficial qualities. Specifically, the amylases of the current invention show an altered exospecifity.
摘要:
The present invention provides methods and compositions for the production of mature proteases in bacterial host cells. The compositions include modified polynucleotides that encode modified proteases, which have at least one mutation in the pro region; the modified serine proteases encoded by the modified polynucleotides; expression cassettes, DNA constructs, and vectors comprising the modified polynucleotides that encode the modified proteases; and the bacterial host cells transformed with the vectors of the invention. The methods include methods for enhancing the production of mature proteases in bacterial host cells e.g. Bacillus sp. host cells. The produced proteases find use in the industrial production of enzymes, suitable for use in various industries, including but not limited to the cleaning, animal feed and textile processing industry.
摘要:
The invention features methods for producing isoprene from cultured cells. The invention also provides compositions that include these cultured cells.
摘要:
The present invention provides methods of altering the production of desired polypeptides in a host cell. In particular, the present invention provides polynucleotides encoding truncated SecG proteins capable of facilitating the secretion of desired proteases by a bacterial host cell, such as Bacillus species, as well as expression vectors and a host cell containing the polynucleotides.
摘要:
We describe a PS4 variant polypeptide derivable from a parent polypeptide having non-maltogenic exoamylase activity, in which the PS4 variant polypeptide comprises an amino acid mutation at one or more positions selected from the group consisting of: 121, 161, 223, 146, 157, 158, 198, 229, 303, 306, 309, 316, 353, 26, 70, 145, 188, 272, 339, with reference to the position numbering of a Pseudomonas saccharophilia exoamylase sequence shown as SEQ ID NO: 1.
摘要翻译:我们描述了可从具有非麦芽糖苷外切酶活性的亲本多肽衍生的PS4变体多肽,其中PS4变体多肽在选自以下的一个或多个位置包含氨基酸突变:121,161,223,146,157 ,158,198,229,303,306,309,316,353,26,70,205,188,272,339,参考SEQ ID NO:1所示的假单胞菌属的嗜酸芽胞弧菌外切酶序列的位置编号。