申请人:Backus Keriann Marie
公开号:US20120263649A1
公开(公告)日:2012-10-18
A method for determining the presence of mycobacteria species in an organism or biological sample, the method comprising adding to the organism or biological sample a probe molecule comprising a substrate and a label, which probe molecule can be incorporated into mycobacteria, the presence of mycobacteria being determined by a detector responsive to the presence of the label, optionally after applying a stimulus; suitable probe molecules include compounds comprising a label and a substrate, which label is can be detected by a detector responsive to the presence of the label, optionally after applying a stimulus, characterised by compound being able to engage with the active site of Antigen 85B (Ag85B) such that it can form simultaneous hydrogen bonds with two or more amino acids in the active site selected from Arg 43, Trp 264, Ser126, His 262 and Leu 42, or the corresponding amino acids in Antigen 85A (Ag85A) or Antigen 85C (Ag85C), at least one of which is with Ser126.
一种用于确定生物体或生物样本中结核分枝杆菌物种存在的方法,该方法包括向生物体或生物样本中添加一种探针分子,该探针分子包括底物和标签,该探针分子可以被结核分枝杆菌所包含,通过对响应标签存在的探测器进行检测来确定结核分枝杆菌的存在,可选地,在施加刺激后进行检测;适当的探针分子包括包含标签和底物的化合物,该标签可以被响应标签存在的探测器检测到,可选地,在施加刺激后进行检测,其特征在于该化合物能够与抗原85B(Ag85B)的活性位点发生作用,使其能够与活性位点中的Arg 43、Trp 264、Ser126、His 262和Leu 42中选择的两个或更多氨基酸同时形成氢键,或与抗原85A(Ag85A)或抗原85C(Ag85C)中的相应氨基酸形成氢键,其中至少有一个与Ser126形成氢键。