APOORVA PATEL

Centre for Theoretical Studies, and Supercomputer Education and Research Centre, Indian Institute of Science, Bangalore 560 012, India

Email: adpatel@cts.iisc.ernet.in

Abstract.

Replication of DNA and synthesis of proteins are studied from the view-point of quantum database search. Identification of a base-pairing with a quantum query gives a natural (and first ever!) explanation of why living organisms have 4 nucleotide bases and 20 amino acids. It is amazing that these numbers arise as solutions to an optimisation problem. Components of the DNA structure which implement Grover's algorithm are identified, and a physical scenario is presented for the execution of the quantum algorithm. It is proposed that enzymes play a crucial role in maintaining quantum coherence of the process. Experimental tests that can verify this scenario are pointed out.

Keywords: Quantum mechanics; computation; database search; genetic information; DNA; nucleotide base; protein; amino acid; enzyme; quantum coherence.

Pacs Nos. 03.67.Lx; 87.15.By; 87.22.Me