摘要:
The invention provides for a PS4 variant polypeptide derivable from a parent polypeptide having amylase activity which may be 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:本发明提供可衍生自具有淀粉酶活性的亲本多肽的PS4变体多肽,其可以选自: 146,157,161,178,179,223,229,272,303,307,309和334; (b)包含位置33,34,121,134,141,145,146,157,178,179,223,229,272,303,307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所示的假单胞菌属酵母内切酶序列的位置编号,这种多肽作为食品或饲料添加剂的使用,以及编码其的核酸。
摘要:
This is 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 thermostability.
摘要:
Modified target molecules are disclosed comprising genetically modified molecules, preferably enzymes, that include a catalytic triad which alters the performance of the polypeptide. Optionally, such a catalytic triad in the modified target molecule comprises three members equivalent to amino acid residues Serine 227, Histidine 200, or Glutamate 139, respectively, in the Bacillus cellulase 103 sequence. Using the embodiments disclosed by the present invention, altered performance profiles, such as enzyme activity or stability, under alkaline conditions can be achieved. Methods of making and using modified target molecules are also disclosed.
摘要:
This invention is generally concerned with sensing apparatus and methods, more particularly apparatus and methods for sensing techniques based upon cavity ring-down spectroscopy (CRDS). An evanescent wave cavity-based optical sensor is described. The sensor comprises an optical cavity formed by a pair of highly reflective surfaces (108, 110) such that light within said cavity makes a plurality of passes between said surfaces, an optical path between said surfaces including a reflection from a totally internally reflecting (112) surface, said reflection from said reflection from said surface generating an evanescent wave to providing a sensing function; a light source (102) to inject light into said cavity; and a detector (114) to detect a light level within said cavity; whereby absorption of said evanescent wave is detectable using said detector to provide said sensing function; wherein said light source comprises a continuous wave light source; and wherein said light source has a power and bandwidth sufficient to couple energy into at least two modes of oscillation of said cavity to overcome losses within the cavity and excite at least two modes of oscillation of said cavity.
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:
A method for maintaining consistency between translated host instructions and target instructions from which the host instructions have been translated including the steps of maintaining a copy of a target instruction for which a translated host instruction have been made, comparing the copy of the target instruction with a target instruction at a memory address at which the target instruction from which the copy was made was stored when translated, disabling the translated host instruction if the copy of the target instruction is not the same as the target instruction at the memory address, and executing the translated host instruction if the copy of the target instruction is the same as the target instruction at the memory address.
摘要:
The present invention relates to certain novel substituted derivatives which are 1-pyrimidinylacetamide derivatives of formula I, ##STR1## which are inhibitors of human leukocyte elastase (HLE), also known as human neutrophil elastase (HNE), making them useful whenever such inhibition is desired, such as for research tools in pharmacological, diagnostic and related studies and in the treatment of diseases in mammals in which HLE is implicated. The invention also includes intermediates useful in the synthesis of these substituted derivatives, processes for preparing the substituted derivatives, pharmaceutical compositions containing such substituted derivatives and methods for their use.
摘要:
The present invention relates to certain novel heterocyclic ketones which are 1-pyridylacetamide ketones of formula I, set out herein, which are inhibitors of human leukocyte elastase (HLE), also known as human neutrophil elastase (HNE), making them useful whenever such inhibition is desired, such as for research tools in pharmacological, diagnostic and related studies and in the treatment of diseases in mammals in which HLE is implicated. The invention also includes intermediates useful in the synthesis of these heterocyclic ketones, processes for preparing the heterocyclic ketones, pharmaceutical compositions containing such heterocyclic ketones and methods for their use.