Agre, Peter Courtland, 1949-, American molecular biologist, b. Northfield, Minn., M.D. Johns Hopkins, 1974. From 1981 to 2005, Agre taught at Johns Hopkins in the departments of medicine and cell biology. He joined the Duke Univ. Medical Center in Durham, N.C., in 2005 as vice chancellor for science and technology. Agre shared the 2003 Nobel Prize in Chemistry with Roderick MacKinnon for discoveries concerning channels in cell membranes, with Agre's work focusing on water channels and McKinnon's on ion channels. Agre is credited with discovering how water is transported into and out of cells, facilitated by water-channel proteins called aquaporins. Aquaporins are part of the blood-brain barrier and are also associated with water transport in skeletal muscle, the lungs, and the kidneys.

Agre (अग्रे) or Aga (अगा) or Hanga (हंगा) is a clan or gotra of Jats found in Haryana, Uttar Pradesh and Rajasthan in India.


The Agra claims descent from Hagamasha, a satrap of Mathura appointed by the Kushan ruler Kanishka. Hagamasha (also known as Hangamas) belonged to the Tushara or Kaswan dynasty and was appointed as the Governor of Mathura. His descendants came to be called Hanga and had about eighty villages in district of Mathura. Over the years, "Hanga" became 'Aga', and was Sanskritized to 'Agre'. According to the Jat historian Bhim Singh Dahiya, the Hangas were a branch of Tocharians that came to Brij area in India and settled on the fertile banks of Yamuna River.

Notable persons from this clan


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