Hemoglobin Gibson started his career with studies of
hemoglobin, and continued with much other work on heme proteins.
Medical and physiological work In keeping with his medical qualifications, much of Gibson's early work had medical or
physiological relevance.
Cooperativity During the period when protein and enzyme cooperativity was at the center of biochemical interest Gibson studied it in the context of abnormal hemoglobins.
Rapid reactions Gibson made major contributions to the development of methods for studying rapid reactions, and their application to hemoglobin.
Other proteins Other work concerned enzymes such as "
diaphorase",
glucose oxidase, cytochrome oxidase and peroxidase.
Thermodynamics Much of Gibson's work concerned questions of thermodynamics and equilibria, and in that context he participated in discussions about how to present thermodynamic data. ==Awards and honours==