Synlett 2025; 36(07): 826-834
DOI: 10.1055/a-2435-6207
letter
Thieme Chemistry Journals Awardees 2024

Chemical Capture and Sensing of Bovine Serum Albumin with Phenothiazinylcarbaldehyde-Labeled 2′-Deoxyuridine

Rajesh Sahu
a   Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh Road, Matunga, Mumbai 400019, India
,
Yogesh S. Sanghvi
b   Rasayan Inc., 2802 Crystal Ridge, Encinitas, CA 92024-6615, USA
,
Krishna Chaitanya Gunturu
c   School of Sciences, SRTM University, Nanded 431606, India
,
Subhendu Bag
d   Bioorganic Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Guwahati, 781039, Assam, India
,
a   Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh Road, Matunga, Mumbai 400019, India
› Author Affiliations
Rasayan Inc. provided a research grant to the A.R.K. group at ICT Mumbai. A.R.K. would like to acknowledge the Council of Scientific and Industrial Research (CSIR) for providing a fellowship to R.S. K.C.G. thanks CSIR, New Delhi, India (01(3079)/21/EMR-II) for the financial assistance throughout this research project.


Abstract

Chemical-capture-mediated sensing has had a great impact on proteomic research. Toward this end, we demonstrate the chemical trapping of BSA by the reactive formyl functionality of a newly developed fluorescent nucleoside probe, formylphenothiazine-labeled-2′-deoxyuridine. The probe is capable of trapping BSA via Schiff base formation leading to fluorescence ‘switch-on’ sensing with a large hypsochromic shift of ca. 100 nm. The α-amylase does not show any significant change in fluorescence response, demonstrating the efficiency of the probe in selective sensing of BSA. Docking studies suggest the preferential interaction of the phenothiazinylcarbaldehyde-labeled dU with the residual amino acids in site I of the BSA protein as compared to site II.

Supporting Information



Publication History

Received: 13 August 2024

Accepted after revision: 07 October 2024

Accepted Manuscript online:
07 October 2024

Article published online:
18 October 2024

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