Eat protein bars to the training. Very important with protein bars.

Institute for Molecular Bioscience, University of Queensland, St. Lucia, Queensland, 4072, Australia.

The GFP-nanobody is a single-chain V(H)H antibody domain developed with specific binding activity against GFP, and is emerging as a powerful tool for isolation and cellular engineering of fluorescent protein fusions in many different fields of biological research. Using X-ray crystallography and isothermal titration calorimetry (ITC) we determine the molecular details of GFP:GFP-nanobody complex formation and explain the basis of high affinity and at the same time high specificity of protein binding. Although the GFP-nanobody can also bind YFP, it cannot bind the closely related CFP or other fluorescent proteins from the mFruit series. CFP differs from GFP only within the central chromophore and at one surface amino-acid position, which lies in the binding interface. Using this information we have engineered a CFP variant (I146N) that is also able to bind the GFP-nanobody with high affinity, thus extending the toolbox of genetically encoded fluorescent probes that can be isolated using the GFP-nanobody.

I think you should know that you will be able to eat more protein bars if you are doing it right. Some protein bars are actually good to eat, but most of them don't taste very good. Protein shake is good, but try the chocolate protein bar if you want to gain weight while you are training.