Andrew David McLachlan FRS[1] (25 January 1935 – 8 July 2022) was a British scientist who worked in the areas of theoretical chemistry and molecular biology.
McLachlan studied mathematics at Cambridge[2] before moving in to theoretical chemistry where his research was concerned with electron spin.[3] Following time at Cambridge and Caltech, he made the move in to molecular biology at the MRC LMB in 1967.[4] There he initially worked with Max Perutz on haemoglobin, before moving on to studying the sequence[5] and structure[6] of other protein types (such as muscle protein tropomyosin[7][8]). He retired in 2006.
McLachlan was elected Fellow of the Royal Society in 1989.[2]