New Delhi, Oct 8 : Lok Sabha Speaker Thursday congratulated Indian-origin scientist Venkatraman Ramakrishnan on winning the Nobel Prize for Chemistry.

Lauding his pioneering work in the field of molecular biology, the speaker said: "The nation and the people of India are proud." She said his research would break "new grounds and lead to new dimensions in the field of biology".

Ramakrishnan, now a US citizen and associated with MRC Laboratory of Molecular Biology in Cambridge, Britain, was named for the $1.42-million prize Wednesday along with American Thomas A. Steitz and Israeli Ada E. Yonath for their "studies of the structure and function of the ribosome".(IANS)