Patent ID: 11859236
Assignee: WENZHOU MEDICAL UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC C  G  Y | IPC C

Claim 0:
1. A method for detecting L-serine based on cysteine desulfurase-containing Escherichia coli cells, comprising steps of: incubating an unknown sample with cysteine desulfurase-containing living Escherichia coli cells to produce a red substance, and qualitatively or semi-quantitatively detecting L-serine content in the unknown sample according to color changes of the red substance of the living Escherichia coli cells, and quantitatively detecting L-serine content in the unknown sample by measuring absorbance of a lysate of the living Escherichia coli cells, wherein the cysteine desulfurase-containing living Escherichia coli cells express cysteine desulfurase IscS, and a gene sequence encoding the cysteine desulfurase IscS is shown in SEQ ID NO: 1.