Call Doctor If: You have a gush or steady trickle of a clear or straw-colored odorless fluid. Write down the time, how much fluid is released, and what it looks like. You aren't sure if you are leaking amniotic fluid or urine. Urine usually leaks when you cough, laugh, or sneeze. Amniotic fluid leaks continuously.
In biochemistry and structural biology, protein secondary structure is the general three-dimensional form of local segments of proteins. Secondary structure can be formally defined by the pattern of hydrogen bonds of the protein (such as alpha helices and beta sheets) that are observed in an atomic-resolution structure.he rough secondary-structure content of a biopolymer (e.g., this protein is 40% Î±-helix and 20% Î²-sheet .) can be estimated spectroscopically. For proteins, a common method is far-ultraviolet (far-UV, 170â250 nm) circular dichroism.
Main article: Protein primary structure. The primary structure of a protein refers to the linear sequence of amino acids in the polypeptide chain. The primary structure is held together by covalent bonds such as peptide bonds, which are made during the process of protein biosynthesis or translation.