Identification and analysis of four candidate symbiosis genes from 'Chlorochromatium aggregatum', a highly developed bacterial symbiosis.

Identification and analysis of four candidate symbiosis genes from 'Chlorochromatium aggregatum', a highly developed bacterial symbiosis.
复制标题

高度发达的细菌共生体“Chlorochromatiumaggregatum”中四个候选共生基因的鉴定和分析

DOI:
10.1111/j.1462-2920.2008.01709.x
复制
发表时间:
2008
影响因子:
5.1
通讯作者:
Overmann
Overmann
中科院分区:
生物学2区
文献类型:
--
作者:
Wenter;Dressen;Schlickenrieder;Plöscher;Eichacker;Overmann

文献摘要

参考文献

被引文献

相似文献

“Chlorochromatiumaggregatum”联盟目前代表了原核生物之间最高度发达的种间联系。它由绿色硫细菌(所谓的表生物体)组成,包围着中央的、能动的、化能细菌。通过抑制消减杂交和生物信息学方法恢复了表生物体的四个假定共生基因。这些基因是组成型转录的,并且不会出现在表生物的自由生活亲属中。开放阅读框 (ORF) Cag0614 和 Cag0616 的类血凝素假定基因产物异常大,并且包含重复区域和 RGD 三肽。 Cag0616 包含两个 βγ 结晶希腊键基序。 Cag1920 编码一种假定的溶血素,而 Cag1919 的基因产物是一种假定的 RTX 样蛋白。根据对 Cag1919 的详细分析,C 端氨基酸序列包含 6 个重复的 GGXGXD 基序,预计会形成 Ca2+ 结合 β 卷。完好无损'C. 添加 EGTA 或焦磷酸盐后,聚集体会分解,但在各种凝集素结合糖或蛋白水解酶存在下保持完整。与其他RTX毒素不同,Cag1919的基因产物无法通过45Ca2+放射自显影术检测到,表明细胞中相应蛋白质的丰度较低。 Cag1919 编码的 RTX 型 C 末端与各种变形菌蛋白的 RTX 模块显着相似,表明这种假定的共生基因是通过变形菌的水平基因转移获得的。
The consortium ‘Chlorochromatium aggregatum’ currently represents the most highly developed interspecific association between prokaryotes. It consists of green sulfur bacteria, so‐called epibionts, which surround a central, motile, chemotrophic bacterium. Four putative symbiosis genes of the epibiont were recovered by suppression subtractive hybridization and bioinformatics approaches. These genes are transcribed constitutively and do not occur in the free‐living relatives of the epibiont. The haemagglutinin‐like putative gene products of open reading frames (ORFs) Cag0614 and Cag0616 are unusually large and contain repetitive regions and RGD tripeptides. Cag0616 harbours two βγ‐crystalline Greek key motifs. Cag1920 codes for a putative haemolysin whereas the gene product of Cag1919 is a putative RTX‐like protein. Based on detailed analyses of Cag1919, the C‐terminal amino acid sequence comprises six repetitions of the motif GGXGXD predicted to form a Ca2+‐binding beta roll. Intact ‘C. aggregatum’ consortia disaggregated upon the addition of EGTA or pyrophosphate, but stayed intact in the presence of various lectine‐binding sugars or proteolytic enzymes. Unlike other RTX toxins, a gene product of Cag1919 could not be detected by45Ca2+autoradiography, indicating a low abundance of the corresponding protein in the cells. The RTX‐type C‐terminus coded by Cag1919 exhibited a significant similarity to RTX modules of various proteobacterial proteins, suggesting that this putative symbiosis gene has been acquired via horizontal gene transfer from a proteobacterium.
γ-晶状体蛋白的钙结合特性
DOI: --
发表时间: 2001
影响因子: 4.8
作者:
B. Rajini;P. Shridas;C. Sundari;D. Muralidhar;S. Chandani;F. Thomas;Y. Sharma
通讯作者: Y. Sharma
DOI: 10.1016/0966-842x(94)90338-7
发表时间: 1994-01-01
影响因子: 15.9
作者:
Isberg, Ralph R.;Van Nhieu, Guy Tran
通讯作者: Van Nhieu, Guy Tran
百日咳博德特菌腺苷酸环化酶与 CD11b/CD18 的相互作用
DOI: --
发表时间: 2003
影响因子: 4.8
作者:
Mohammed El;C. Bauche;J. Loucká;Radim Osicka;P. Šebo;D. Ladant;C. Leclerc
通讯作者: C. Leclerc
DOI: 10.1002/pmic.200600607
发表时间: 2007-03-01
期刊: PROTEOMICS
影响因子: 3.4
作者:
Granvogl, Bernhard;Gruber, Patrick;Eichacker, Lutz Andreas
通讯作者: Eichacker, Lutz Andreas
富含硫化物的池塘(西索湖)中大量繁殖水蚤
DOI: --
发表时间: 1995
期刊:
影响因子: --
作者:
J. Gasol;K. Jürgens;R. Massana;Juan I. Calderón;C. Pedrós
通讯作者: C. Pedrós