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通过质子和碳-13磁共振波谱法鉴别申克孢子丝菌和窄头长喙壳菌的鼠李甘露聚糖

Discrimination between Sporothrix schenckii and Ceratocystis stenoceras rhamnomannans by proton and carbon-13 magnetic resonance spectroscopy.

作者信息

Travassos L R, Gorin P A, Lloyd K O

出版信息

Infect Immun. 1974 Apr;9(4):674-80. doi: 10.1128/iai.9.4.674-680.1974.

Abstract

The proton and (13)C magnetic resonance (CMR) spectra of 10 Sporothrix schenckii and three Ceratocystis stenoceras rhamnomannans were studied. On the basis of their CMR spectra, the rhamnomannans from S. schenckii strains could be classified into two major types, I and II, readily distinguishable from the polysaccharides formed at the same temperature (25 C) by C. stenoceras. Rhamnomannans from S. schenckii synthesized at 37 C gave CMR spectra (type III) differing from those of polysaccharides of types I and II and from those of C. stenoceras polysaccharides. The contention that C. stenoceras might be the perfect form of S. schenckii is not supported by the present data. A presumptive pathogenic mutant of C. stenoceras synthesized a type I rhamnomannan characteristic of S. schenckii, clearly differing from the rhamnomannans from C. stenoceras synthesized in the same conditions. Nuclear magnetic resonance spectroscopy revealed differences in the structures of the polysaccharides from these species not previously recognized by methylation analysis.

摘要

对10株申克孢子丝菌和3株窄头长喙壳菌的鼠李糖甘露聚糖的质子和碳-13磁共振(CMR)光谱进行了研究。根据CMR光谱,申克孢子丝菌菌株的鼠李糖甘露聚糖可分为两种主要类型,I型和II型,很容易与窄头长喙壳菌在相同温度(25℃)下形成的多糖区分开来。在37℃合成的申克孢子丝菌的鼠李糖甘露聚糖产生的CMR光谱(III型)不同于I型和II型多糖以及窄头长喙壳菌多糖的光谱。目前的数据不支持窄头长喙壳菌可能是申克孢子丝菌的完全型这一论点。窄头长喙壳菌的一个推定致病突变体合成了一种申克孢子丝菌特有的I型鼠李糖甘露聚糖,明显不同于在相同条件下合成的窄头长喙壳菌的鼠李糖甘露聚糖。核磁共振光谱揭示了这些物种多糖结构上的差异,这些差异以前通过甲基化分析未被识别。

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