Primordial Proteins (IMAGE) Weizmann Institute of Science Caption How did the first amino acids, needed to make proteins (like the arginine, green ribbons) form? Credit Weizmann Institute of Science Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.