As a young man, Rich was smart, resourceful, and ambitious and he received a fellowship to Harvard College and later attended Harvard Medical School. This may be the first articulation of the now widely accepted idea of an RNA world. Such spontaneous base pairing between different nucleic acid chains is known as hybridization and is the fundamental underlying chemical process by which the information in DNA is translated into protein.
Rich is perhaps best known for the elucidation of the three-dimensional structure of a transfer RNA molecule, and for the discovery of an alternative form of DNA that exists in certain biological contexts, known as Z-DNA. Rich worked as a section chief in physical chemistry at the National Institutes of Health from to The base-pairing rules — adenine pairs with thymine and guanine pairs with cytosine — are imposed by the geometric constraints on the paired bases as they are held together by hydrogen bonds in the central core of the helix. Hybridization is the process by which single-stranded RNA or DNA molecules can find each other in solution by the exact matching of complementary base sequences.
This molecule provided a structural basis for copying information from the gene sequence in DNA into a complementary single-stranded messenger RNA molecule. Because of its remarkable speed and specificity, hybridization remains today as one of two fundamental methods for reading out the identity of RNA or DNA molecules in different contexts — the direct determination of the base sequence, with the other being carrying out the matching by computer. This may be the first articulation of the now widely accepted idea of an RNA world.
Darbuka. Quick Facts:
Besides, he too has produced many movies. People named Alex Rich Find your friends on Facebook Log in or sign up for Facebook to connect with friends, family and people you know. He holds American Nationality. Rich himself wrote and spoke extensively about the early years of molecular biology in ways that reveal two important characteristics as a scientist. While, his exact date of birth is not revealed. Rich worked as a section chief in physical chemistry at the National Institutes of Health from to However, the name of his brother and sisters are not revealed yet to media.
Also, he looks tall, handsome and muscular. In one reaction, they prepared a long strand of RNA with only adinines oligo-A and in a separate reaction a long strand of RNA made up entirely of uracil oligo-U. Rich took a job at the NIH.
People named Alex Rich Find your friends on Facebook Log in or sign up for Facebook to connect with friends, family and people you know. List of awards and prizes received[ edit ]. Rich was captivated by the connection, as so beautifully illustrated by the DNA model, between chemical structure and biological function and he was determined to make his mark in this new field as a structural biologist.
Nastya with Yummy Fruits and Vegetables and other stories for kids