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    • 6. 发明申请
    • PHEX SUBSTRATES AND METHODS USING SAME
    • PHEX基板及其使用方法
    • WO2004085465A1
    • 2004-10-07
    • PCT/CA2004/000453
    • 2004-03-25
    • BIOMEP INC.BOILEAU, GuyCARMONA, Adriana, KaraoglanovicCAMPOS, MarceloJULIANO, Maria, AparecidaJULIANO, Luiz
    • BOILEAU, GuyCARMONA, Adriana, KaraoglanovicCAMPOS, MarceloJULIANO, Maria, AparecidaJULIANO, Luiz
    • C07K7/00
    • C07K7/06C07K5/1016C07K5/1019C07K7/08C07K2319/60C12Q1/37G01N33/542G01N2500/00
    • A fluorogenic PHEX substrate comprising a peptide unit; a fluorophore unit capable of conferring fluorescence on said substrate attached to an amino acid residue at a first end of the peptide unit; and a quencher unit capable of providing intramolecular quenching of said fluorescence attached to an amino acid residue at a second end of the peptide unit; the peptide unit having at least 6 amino acids residues including a sequence P 2 -P l -P 1' -P 2' of 4 amino acid residues at positions P 2 , P 1 , P l' and P 2' of the peptide unit, respectively; the amino acid residue at position P 2 being any amino acid residue; the amino acid residue at position P, being any amino acid residue except an isoleucine, a valine, or a histidine residue; the amino acid residue at position P 1' being an acidic amino acid residue selected from the group consisting of a glutamic acid residue and an aspartic acid residue, and being located at least 2 amino acid residues distal to both the fluorophore and the quencher units; the amino acid residue at position P 2' being any amino acid residue except a leucine, a proline or a glycine residue, with the proviso that said peptide unit does not have the sequence as set forth in SEQ ID NO:1. Methods of using the peptide sequence unit to identify PHEX modulators and for detecting PHEX in a sample.
    • 含有肽单元的含氟PHEX底物; 能够赋予附着在肽单元的第一末端的氨基酸残基的所述底物上的荧光的荧光团单元; 以及猝灭单元,其能够提供附着于所述肽单元的第二末端的氨基酸残基的所述荧光的分子内猝灭; 肽单元具有至少6个氨基酸残基,分别包含肽单元的P2,P1,P1'和P2'的4个氨基酸残基的序列P2-P1-P1'-P2'; 位置P2处的氨基酸残基是任何氨基酸残基; 位置P处的氨基酸残基是除异亮氨酸,缬氨酸或组氨酸残基之外的任何氨基酸残基; 位置P1'处的氨基酸残基是选自谷氨酸残基和天冬氨酸残基的酸性氨基酸残基,并且位于远离荧光团和猝灭单元的至少2个氨基酸残基; 该位置P2'处的氨基酸残基是除亮氨酸,脯氨酸或甘氨酸残基之外的任何氨基酸残基,条件是所述肽单元不具有如SEQ ID NO:1所示的序列。 使用肽序列单元识别PHEX调节剂并检测样品中的PHEX的方法。