Polymer grafting by polysaccharide synthases
First Claim
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1. A method for elongating a functional acceptor, comprising the steps of:
- providing a functional acceptor, wherein the functional acceptor has at least two sugar units selected from the group consisting of GlcUA, GlcNAc, GalNAc, and hexosamine, and wherein the functional acceptor is attached to a substrate selected from the group consisting of silica, silicon, glass, polymers, organic compounds, metals and combinations thereof;
providing a recombinant, soluble hyaluronic acid synthase having an empty acceptor site and being capable of elongating the functional acceptor, wherein the hyaluronic acid synthase is encoded by a nucleotide sequence capable of hybridizing at 68°
C. In 5×
SSC/5×
Denhardt'"'"'s solution/1.0% SDS, followed with washing in 0.2×
SSC/0.1% SDS at room temperature to a complement of the hyaluronic acid synthase nucleotide sequence as set forth in SEQ ID NO;
2; and
providing UDP-GlcUA and UDP-GlcNAc sugars such that the hyaluronic acid synthase elongates the functional acceptor.
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Abstract
The present invention relates to methodology for polymer grafting by a polysaccharide synthase and, more particularly, polymer grafting using the hyaluronate synthase from Pasteurella multocida.
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Citations
13 Claims
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1. A method for elongating a functional acceptor, comprising the steps of:
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providing a functional acceptor, wherein the functional acceptor has at least two sugar units selected from the group consisting of GlcUA, GlcNAc, GalNAc, and hexosamine, and wherein the functional acceptor is attached to a substrate selected from the group consisting of silica, silicon, glass, polymers, organic compounds, metals and combinations thereof; providing a recombinant, soluble hyaluronic acid synthase having an empty acceptor site and being capable of elongating the functional acceptor, wherein the hyaluronic acid synthase is encoded by a nucleotide sequence capable of hybridizing at 68°
C. In 5×
SSC/5×
Denhardt'"'"'s solution/1.0% SDS, followed with washing in 0.2×
SSC/0.1% SDS at room temperature to a complement of the hyaluronic acid synthase nucleotide sequence as set forth in SEQ ID NO;
2; andproviding UDP-GlcUA and UDP-GlcNAc sugars such that the hyaluronic acid synthase elongates the functional acceptor. - View Dependent Claims (2, 3, 4)
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5. A method for elongating a functional acceptor, comprising the steps of:
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providing a functional acceptor, wherein the functional acceptor has at least two sugar units selected from the group consisting of GlcUA, GlcNAc, GalNAc, and hexosamine, and wherein the functional acceptor is attached to a substrate selected from the group consisting of silica, silicon, glass, polymers, organic compounds, metals and combinations thereof; providing a recombinant, soluble hyaluronic acid synthase having an empty acceptor site and being capable of elongating the functional acceptor, wherein the hyaluronic acid synthase is encoded by a nucleotide sequence as set forth in SEQ ID NO;
2; andproviding UDP-GlcUA and UDP-GlcNAc sugars such that the hyaluronic acid synthase elongates the functional acceptor. - View Dependent Claims (6, 7)
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8. A method for elongating a functional acceptor, comprising the steps of:
providing a functional acceptor, wherein the functional acceptor has at least three sugar units selected from the group consisting of GlcUA, GlcNAc, GalNAc, and hexosamine, and wherein the functional acceptor is attached to a substrate selected from the group consisting of silica, silicon, glass, polymers, organic compounds, metals and combinations thereof; providing a recombinant, soluble hyaluronic acid synthase having an empty acceptor site and being capable of elongating the functional acceptor, wherein the hyaluronic acid synthase is encoded by a nucleotide sequence capable of hybridizing at 68°
C. in 5×
SSC/5×
Denhardt'"'"'s solution/1.0% SDS, followed with washing in 0.2×
SSC/0.1% SDS at room temperature to a complement of the hyaluronic acid synthase nucleotide sequence as set forth in SEQ ID NO;
2; andproviding UDP-GlcUA and UDP-GlcNAc sugars such that the hyaluronic acid synthase elongates the functional acceptor. - View Dependent Claims (9, 10)
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11. A method for elongating a functional acceptor, comprising the steps of:
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providing a functional acceptor, wherein the functional acceptor has at least three sugar units selected from the group consisting of GlcUA, GlcNAc, GalNAc, and hexosamine, and wherein the functional acceptor is attached to a substrate selected from the group consisting of silica, silicon, glass, polymers, organic compounds, metals and combinations thereof; providing a recombinant, soluble hyaluronic acid synthase having an empty acceptor site and being capable of elongating the functional acceptor, wherein the hyaluronic acid synthase is encoded by a nucleotide sequence as set forth in SEQ. ID NO;
2; andproviding UDP-GlcUA and UDP-GlcNAc sugars such that the hyaluronic acid synthase elongates the functional acceptor. - View Dependent Claims (12, 13)
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Specification