work_institution birth_place name birth_date article_title birth_name
university of oxford halifax , west yorkshire , england professor sir john walker 7 january 1941 john e. walker
 john ernest walker
john e. walker

professor sir john ernest walker -lrb- born 7 january 1941 -rrb- is an english chemist who won the nobel prize in chemistry in 1997 .
he is currently a group leader at the mrc mitochondrial biology unit in cambridge , and a fellow of sidney sussex college .
