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链球菌噬菌体研究。II. A组和C组链球菌噬菌体的吸附研究。

Studies on streptococcal bacteriophages. II. Adsorption studies on group A and group C streptococcal bacteriophages.

作者信息

Fischetti V A, Zabriskie J B

出版信息

J Exp Med. 1968 Mar 1;127(3):489-505. doi: 10.1084/jem.127.3.489.

Abstract

Evidence has been presented that Group C bacteriophages differ as to their inactivating site on the streptococcal cell wall. While all three phages adsorb to isolated cell walls, only the C1 phage was inactivated by enzymatically prepared group-specific carbohydrate. None of the Group C phages were inactivated by chemically extracted group-specific carbohydrate. In contrast, all virulent Group A streptococcal bacteriophages adsorbed only to living Group A streptococci. However, Group A temperate phages were able to adsorb to isolated cell walls but not to group-specific carbohydrate. While it has not been possible to identify the specific inactivating substance for the Group A virulent phages, certain pieces of evidence indirectly implicate the group-specific carbohydrate, specifically the N-acetylglucosamine moiety. The fact that Group A virulent phages failed to adsorb to heat-killed Group A streptococcal cells suggests that additional factors produced by the living cell are needed for complete viral inactivation.

摘要

已有证据表明,C 组噬菌体在链球菌细胞壁上的失活位点存在差异。虽然所有三种噬菌体都能吸附到分离的细胞壁上,但只有 C1 噬菌体可被酶法制备的群特异性碳水化合物灭活。C 组噬菌体均不能被化学提取的群特异性碳水化合物灭活。相比之下,所有毒性 A 组链球菌噬菌体仅吸附到活的 A 组链球菌上。然而,A 组温和噬菌体能够吸附到分离的细胞壁上,但不能吸附到群特异性碳水化合物上。虽然尚未确定 A 组毒性噬菌体的特异性失活物质,但某些证据间接表明是群特异性碳水化合物,特别是 N - 乙酰葡糖胺部分。A 组毒性噬菌体不能吸附到热灭活的 A 组链球菌细胞上,这一事实表明,活细胞产生的其他因素是病毒完全失活所必需的。

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