摘要:
Disclosed is a method of preparing limulus amoebocyte lysate substantially free from factor G which comprises bringing limulus amoebocyte lysate into contact with an insoluble carrier on which a (1.fwdarw.3)-.beta.-D-glucoside structural portion represented by the following formula [I] produced by depolymerizing and/or fractionating a carbohydrate chain is immobilized: ##STR1## wherein n represents an integer of 2 to 370.
摘要:
This invention relates to a horseshoe crab amebocyte lysate factor G activation inhibitor comprising as an active ingredient a polyglycoside containing at least one poly-(1.fwdarw.3)-.beta.-D-glucoside structure portion consisting of 2 to 370 (1.fwdarw.3)-.beta.-D-glucoside structural units of the following formula ##STR1## which are continuously bound to one another. This inhibitor is useful for inhibiting the activation of factor G which may exist in horseshoe crab amebocyte lysate used in the Limulus test.
摘要:
The invention stabilizes single helix conformation (1.fwdarw.3)-.beta.-D-glucans by intramolecular crosslinking and provides (1.fwdarw.3)-.beta.-D-glucans showing stable biological activities. Thus, intramolecularly crosslinked (1.fwdarw.3)-.beta.-D-glucans having a stable single helix conformation are produced by introducing a functional group into hydroxyl groups of (1.fwdarw.3)-.beta.-D-glucans, then causing the thus-obtained functional glucans to take a single helix conformation, and subjecting these, either as such or after binding them to a receptor therefor, to intramolecular crosslinking between the functional groups introduced, if necessary followed by releasing the receptor therefrom.
摘要:
This invention relates to a horseshoe crab amebocyte lysate factor G activation inhibitor comprising as an active ingredient a polyglycoside containing at least one poly-(1.fwdarw.3)-.beta.-D-glucoside structure portion consisting of 2 to 370 (1.fwdarw.3)-.beta.-D-glucoside structural units of the following formula ##STR1## which are continuously bound to one another. This inhibitor is useful for inhibiting the activation of factor G which may exist in horseshoe crab amebocyte lysate used in the Limulus test.
摘要:
This invention relates to a horseshoe crab amebocyte lysate factor G activation inhibitor comprising as an active ingredient a polyglycoside containing at least one poly-(1.fwdarw.3)-.beta.-D-glucoside structure portion consisting of 2 to 370 (1.fwdarw.3)-.beta.-D-glucoside structural units of the following formula ##STR1## which are continuously bound to one another. This inhibitor is useful for inhibiting the activation of factor G which may exist in horseshoe crab amebocyte lysate used in the Limulus test.
摘要:
The invention is a method and a kit for preparing single-stranded DNA from double-stranded DNA and the purification of single-stranded DNA derived from double-stranded DNA. A single-stranded-DNA binding substance is used in combination with a double-strand-specific endonuclease for the removal of undesired double-stranded DNA from a single-stranded DNA preparation and for other related purposes.
摘要:
The present invention relates to a process for synthesizing or amplifying efficiently a nucleic acid comprising a target nucleic acid sequence. In the process according to the present invention, a primer comprising in its 3′-end portion a sequence (Ac′) which hybridizes a sequence (A) in the 3′-end portion of the target nucleic acid sequence, and in the 5′-side of said sequence (Ac′) a sequence (B′) which hybridizes the complementary sequence (Bc) of a sequence (B) positioned in the 5′-side of said sequence (A) on the target nucleic acid sequence, wherein {X−(Y−Y′)}/X is in the range of −1.00 to 1.00, in which X denotes the number of bases in said sequence (Ac′), Y denotes the number of bases in the region flanked by said sequences (A) and (B) in the target nucleic acid sequence, and Y′ denotes the number of bases in an intervening sequence between said sequences (Ac′) and (B′) (Y′ may be zero).
摘要:
The present invention relates to a process for synthesizing or amplifying efficiently a nucleic acid comprising a target nucleic acid sequence. The process involves providing a primer comprising in its 3′-end portion a sequence (Ac′) which hybridizes a sequence (A) in the 3′-end portion of the target nucleic acid sequence, and in the 5′-side of the sequence (Ac′) a sequence (B′) which hybridizes the complementary sequence (Bc) of a sequence (B) positioned in the 5′-side of the sequence (A) on the target nucleic acid sequence, wherein {X−(Y−Y′)}/X is in the range of −1.00 to 1.00, in which X denotes the number of bases in the sequence (Ac′), Y denotes the number of bases in the region flanked by the sequences (A) and (B) in the target nucleic acid sequence, and Y′ denotes the number of bases in an intervening sequence between the sequences (Ac′) and (B′) (Y′ may be zero).
摘要:
Means to circulate any nucleic acid molecule and to obtain from such circular nucleic acid molecules fragments that mark both ends of the initial nucleic acid molecule are provided. Means of high value to studies including, but not limited to, expression profiling, splicing, promoter identification, identification of genetic elements, and beyond, which are essential components of commercial applications and services including, but not limited to, drug development, diagnostics, or forensic studies are also provided.
摘要:
The present invention provides a method for identifying, analyzing and/or cloning nucleic acid isoforms comprising the steps of: preparing at least two nucleic acid isoforms, complementary to each other, hybridizing the at least two complementary nucleic acid isoforms and forming double strand RNA/RNA or DNA/DNA hybrids comprising unpaired regions; recovering the RNA/RNA or DNA/DNA hybrids comprising unpaired regions from not hybridized nucleic acids and from nucleic acids not comprising unpaired regions; and identifying, analyzing and/or cloning the recovered nucleic acid fragment comprising unpaired regions.