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Hemoglobin Bean Bag Toss

Hemoglobin is the protein that makes blood red. It is composed of four protein chains–two alpha chains and two beta chains–each with a ring-like heme group containing an iron atom. Oxygen binds reversibly to these iron atoms and is transported through blood.

Molecule of the Month: Hemoglobin


HemoHole is a game where hemoglobin has holes where the heme bean-bags can be tossed through.

It was created at Rutgers by Institute for Quantitative Biomedicine graduate students Kristin Blacklock, Elliott Dolan, Will Hansen, Nancy Hernandez, and Dmitri Zorine.

The hemoglobin image was broken into two SVG files (download files: left, right) and laser cut/etched at the Rutgers Makerspace.


This hemoglobin piece is approximately 33 inches wide by 29 inches high. It rests on two wood planks 16.5 by 5.5 by 1.5 inches either raised at an angle or closer to the ground.