Pneumococcal carbohydrate uptake systems.

(a)conservation as defined by analysis of the published pneumococcal genomes;(b)substrates as from literature and genomic context.(c)indel insertion/deletion.(d)in the text and on Figure 1 the operon of Hungary 19 is described, since the one of G54 is not complete.(a) 保守性（conservation）：依据已发表肺炎链球菌基因组的分析结果所界定的保守性；(b) 底物（substrates）：源自文献报道与基因组背景的底物；(c) 插入缺失（indel, insertion/deletion）：即插入/缺失变异；(d) 本文正文及图1中所描述的为匈牙利19型（Hungary 19）的操纵子（operon），因G54的操纵子序列尚不完整。