A unique phenylalanine-containing lipopeptide isolated from a rough-colony variant of Mycobacterium avium.

A unique phenylalanine-containing lipopeptide isolated from a rough-colony variant of Mycobacterium avium.
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从鸟分枝杆菌的粗集落变体中分离出的一种独特的含苯丙氨酸的脂肽。

DOI:
10.1111/j.1432-1033.1996.00682.x
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发表时间:
1996
期刊:
European journal of biochemistry
影响因子:
--
通讯作者:
Barrow,WW
Barrow,WW
中科院分区:
--
文献类型:
--
作者:
Rivière,M;Puzo,G;Wright,EL;Barrow,WW

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粘附蛋白玻连蛋白与细胞外基质相关,并作为纤溶酶原激活物抑制剂-1的辅因子。纤溶酶的有限蛋白水解将玻连蛋白转化为在炎症和血管生成部位可检测到的确定片段。玻连蛋白片段的结合功能的损失和增益的大分子配体的特点在本研究中。最初生成的61-63-kDa玻连蛋白-(1-348)-片段作为纤溶酶原的典型结合组分,在羧肽酶B处理后失去结合功能,表明C末端赖氨酸的重要性。互补结合位点存在于分离的纤溶酶原kringles 1-3(命名为血管抑素)中,如从直接结合和配体印迹实验推断的。来自61-63-kDa片段C末端的合成玻连蛋白-(331-348)-肽可模拟纤溶酶原和血管抑素结合。此外,固定化肽结合组织纤溶酶原激活剂并介导纤溶酶形成,与纤维蛋白原衍生肽相当。61-63-kDa的玻连蛋白片段在其与完整的玻连蛋白的粘附特性上是不可区分的,并且结合活性的而不是潜伏的纤溶酶原激活物抑制剂-1。玻连蛋白的晚期纤溶酶解导致蛋白质的N末端区域的加工,产生42 kDd 3S-kDa片段,其具有Gly 89作为新的N末端,并且在促进细胞粘附方面无效。因此,在炎症和血管生成过程中被纤溶酶蛋白水解修饰的细胞基质相互作用位点,玻连蛋白作为纤溶酶原/血管抑素结合因子。由于功能的这种差异性变化,特别是在血管系统中的沉积部位或伤口部位,玻连蛋白被认为是重要的形态调节因子。
The adhesion protein vitronectin is associated with extracellular matrices and serves as cofactor for plasminogen‐activator inhibitor‐1. Limited proteolysis by plasmin converts vitronectin into defined fragments which are detectable at sites of inflammation and angiogenesis. The loss and gain of binding functions of vitronectin fragments for macromolecular ligands was characterized in the present study. The initially generated 61–63‐kDa vitronectin‐(1–348)‐fragment serves as typical binding component for plasminogen and binding function was lost upon carboxypeptidase B treatment indicating the importance of a C‐terminal lysine. Complementary binding sites reside in isolated plasminogen kringles 1–3 (designated angiostatin) as deduced from direct binding and ligand blotting experiments. A synthetic vitronectin‐(331–348)‐peptide from the C‐terminus of the 61–63‐kDa fragment could mimic plasminogen and angiostatin binding. Also, the immobilized peptide bound tissue plasminogen‐activator and mediated plasmin formation, comparable to fibrinogen‐derived peptides. The 61–63‐kDa vitronectin fragment was indistinguishable in its adhesive properties to intact vitronectin and bound active but not latent plasminogen‐activator inhibitor‐1. Late plasminolysis of vitronectin resulted in the processing of the N‐terminal region of the protein with the generation of 42 kDd3S‐kDa fragments that had Gly89 as new N‐terminus and that were ineffective in promoting cell adhesion. Thus, at sites of cell‐matrix interactions which become proteolytically modified by plasmin during inflammatory and angiogenic processes, vitronectin serves as plasminogen/angiostatin‐binding factor. Due to this differential change in functions particularly at sites of deposition in the vascular system or at wound sites vitronectin is considered to be an important morpho‐regulatory factor.
鸟分枝杆菌粗糙突变体中糖肽脂表面抗原的核心脂肽的表达。
DOI: --
发表时间: 1993
期刊: The Journal of biological chemistry
影响因子: --
作者:
Belisle,JT;McNeil,MR;Chatterjee,D;Inamine,JM;Brennan,PJ
通讯作者: Brennan,PJ
DOI: 10.1016/0923-2508(91)90193-e
发表时间: 1991
影响因子: 2.6
作者:
Wright,EL;Barrow,WW
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一种新型甘露糖,含有来自堪萨斯分枝杆菌的酚糖脂。
DOI: 10.1016/s0021-9258(18)48108-2
发表时间: 1987
期刊: The Journal of biological chemistry
影响因子: --
作者:
M. Rivière;J. Fournié;G. Puzo
通讯作者: G. Puzo
使用 1 H NMR ROESY 对含丝氨酸糖肽脂抗原中的 O-糖基化氨基酸进行结构测定。
DOI: 10.1021/bi00129a004
发表时间: 1992
期刊: Biochemistry
影响因子: 2.9
作者:
M. Rivière;G. Puzo
通讯作者: G. Puzo
DOI: 10.1111/j.1432-1033.1993.tb17935.x
发表时间: 1993
期刊: European journal of biochemistry
影响因子: --
作者:
M. Rivière;S. Augé;J. Vercauteren;E. Wisingerová;G. Puzo
通讯作者: G. Puzo