摘要:
The present invention relates to a nucleic acid segment having a coding region segment encoding enzymatically active bacterial multocida hyaluronate synthase (PmHAS), and to the use of this nucleic acid segment in the preparation of recombinant cells which produce hyaluronate synthase and its hyaluronic acid product. Hyaluronate is also known as hyaluronic acid or hyaluronan. The present invention also relates to the use of the PmHAS in constructing "knock-out" mutant strains of P. multocida for use in vaccinations. The present invention further relates to the use of the PmHAS in diagnostic tests in the field determinations of livestock P. multocida infection.
摘要:
A catalyst and method for producing carbon nanotubes by contacting a carbon containing gas with metallic catalytic particles. The catalytic particles contain at least one metal from Group VIII, including for example Co, Ni, Ru, Rh, Pd, Ir, and Pt, and at least one metal from Group VIb including for example Mo, W and Cr. The metal component may be deposited on a support. Preferably, a substantial percentage of the nanotubes formed are single-walled carbon nanotubes. Further, a method for determining catalyst composition and reaction conditions for optimizing production of single-walled carbon nanotubes is also disclosed.
摘要:
A new class of synthetic glycosulfopeptides (GSPs) which have one or more sulfated tyrosine residues and a glycan linked to the peptide, the glycan preferably including a sialyl Lewisx group or a sialyl Lewisa group. In a preferred version the GSPs have an O-glycan comprising a β1,6 linkage to a Ga1NAc. The present invention further contemplates in vitro methods of the synthesis of these GSPs without the use of the cells and methods of their use in vivo as powerful anti-inflammatory antithrombotic, or anti-metastatic compounds. The invention also contemplates a method of synthesizing oligosaccharides by cleaving the glycan from the GSP.
摘要:
An isolated enzymatically-active hyaluronan synthase (HAS) is provided which is encoded by a nucleic acid sequence that has at least 80% identity with SEQ ID NO: 8. In particular, the HAS is a chlorella virus polypeptide. A nucleic acid segment encoding the HAS is also provided, which nucleic acid segment is used in the preparation of recombinant cells which produce hyaluronate synthase and its hyaluronic acid product. Hyalurante is also known as hyaluronic acid or hyaluronan.
摘要翻译:提供了分离的酶促活化的透明质酸合酶(HAS),其由与SEQ ID NO:8具有至少80%同一性的核酸序列编码。特别地,HAS是小球藻病毒多肽。 还提供了编码HAS的核酸片段,该核酸片段用于制备产生透明质酸合成酶及其透明质酸产物的重组细胞。 透明质酸也被称为透明质酸或透明质酸。
摘要:
The present invention relates to a nucleic acid segment having a coding region segment encoding enzymatically active Streptococcus equisimilis hyaluronate synthase (seHAS), and to the use of this nucleic acid segment in the preparation of recombinant cells which produce hyaluronate synthase and its hyaluronic acid product. Hyaluronate is also known as hyaluronic acid or hyaluronan.
摘要:
The present invention relates to methodology for polymer grafting by a polysaccharide synthase and, more particularly, polymer grafting using the hyaluronate or chondroitin or heparin/heparosan synthases from Pasteurella multocida, in order to create a variety of glycosaminoglycan oligosaccharides having a natural or chimeric or hybrid sugar structure.
摘要:
Peptides derived from three regions of the lectin binding region of GMP-140 have been found to selectively interact with "selectins", including GMP-140, ELAM-1, and lymphocyte homing receptor. The three regions include amino acids 19-34, 54-72, and 66-89, based on the numbers of the residues contained in the peptide, with residue 1 defined as the N terminus of the mature protein after cleavage of the signal peptide. Fucosylated sialyated lactosamine structures that bind to GMP-140 have also been discovered. The structure is created by expression of α(1,3) fucosyltransferases capable of modifying acceptors containing α(2,3) sialic acid-substituted lactosaminoglycans. Le x , Galβ1,4(Fucα1,3)GlcNAcβ1-R (where R is a protein or other carbohydrate structure) forms the core of this sialyated structure. The peptides and carbohydrate structures are useful as diagnostics and for clinical applications in the modulation or inhibition of coagulation processes or inflammatory processes.
摘要:
Peptides derived from three regions of the lectin binding region of GMP-140 have been found to selectively interact with "selectins", including GMP-140, ELAM-1, and lymphocyte homing receptor. The three regions include amino acids 19-34, 54-72, and 66-89, based on the numbers of the residues contained in the peptide, with residue 1 defined as the N terminus of the mature protein after cleavage of the signal peptide. Fucosylated sialyated lactosamine structures that bind to GMP-140 have also been discovered. The structure is created by expression of α(1,3) fucosyltransferases capable of modifying acceptors containing α(2,3) sialic acid-substituted lactosaminoglycans. Le x , Galβ1,4(Fucα1,3)GlcNAcβ1-R (where R is a protein or other carbohydrate structure) forms the core of this sialyated structure. The peptides and carbohydrate structures are useful as diagnostics and for clinical applications in the modulation or inhibition of coagulation processes or inflammatory processes.
摘要翻译:已经发现衍生自GMP-140的凝集素结合区域的三个区域的肽选择性地与“选择素”相互作用,包括GMP-140,ELAM-1和淋巴细胞归巢受体。 三个区域包括氨基酸19-34,54-72和66-89,基于肽中包含的残基数目,残基1定义为信号肽切割后成熟蛋白的N末端。 也发现了与GMP-140结合的岩藻糖化的唾液酸化的乳糖胺结构。 该结构通过能够修饰含有α(2,3)唾液酸取代的乳糖胺聚糖的受体的α(1,3)岩藻糖基转移酶的表达产生。 Le x,Galβ1,4(Fuc alpha 1,3)GlcNAcβ1-R(其中R是蛋白质或其他碳水化合物结构)形成该唾液酸化结构的核心。 肽和碳水化合物结构可用作诊断和用于调节或抑制凝血过程或炎症过程的临床应用。