摘要:
A method capable of even with respect to, for example, any biological sample containing multiple compounds, not only confirming the presence of a compound having been converted to a phosphoric acid monoester (peptide, sugar, etc.) among them but also easily identifying the molecular weight thereof; and an additive for mass spectrum measurement which can be used in this method. In this method, use is made of a complex compound exhibiting extremely high coordination capacity for phosphoric acid monoester groups, configured of a single zinc isotope, and multiple mass spectrum data are collected and compared with each other.
摘要:
The present invention provides a method for measuring a surface plasmon resonance, the method enabling easy detection of the existence of a phosphorylated peptide (protein) and determination whether a peptide is phosphorylated or not in biological materials. The present invention also provides a noble metal compound having high capability of coordination to a phosphorylated peptide, and being conveniently usable in the method. A first method for measuring surface plasmon resonance of the present invention comprises: placing a noble metal compound on a bottom face of a prism, irradiating a light to the prism to detect a reflected light, wherein, the noble metal compound has substituents of following formula (I) on a side opposite to a side contacting the prism, and a subject sample is added to a side having the substituent groups (I) in the noble metal compound. [wherein, X represents a linker group]