iron-sulfur cluster
Electron transfer center
An iron-sulfur cluster is a molecular structure found in proteins, consisting of iron atoms bonded to sulfur atoms in various geometric arrangements.
These clusters are ancient and ubiquitous in biology, appearing in organisms from bacteria to humans, where they facilitate electron transfer in cellular respiration and photosynthesis.
Common forms include configurations with two or four iron atoms.
The enzyme's iron-sulfur cluster was essential for its catalytic activity.
- subunitPart of larger entity
- mitochondriaCell's energy-producing organelles
- proteinsAmino acid polymers
- redox reactionsCoupled electron transfer processes
- enzymesReaction-speeding proteins
cofactor · biochemistry · active site · photosynthesis · nitrogen fixation · respiration · energy production · rust · ancient · early life · cellular respiration · oxidation · electron carrier · pyrite · primordial · assembly · metallic · cellular
- atomic clusters
- Cofactorscoenzyme, NADH, FAD, biotin, thiamine
- Metalloproteinsheme, myoglobin, hemoglobin, cobalamin
- protein structurefolding, conformation, domain, motif, fold
- Electron CarriersNADH, FAD, coenzyme Q10, cytochromes, quinone
- Nitrogenase
iron-sulfur clustercobalamin
Water-soluble nerve vitamin
heme · FAD · pyridoxal phosphate · biotin
cluster, iron-sulfur clusters, sulfur, sulfate, sulfurous, ferrous, sulphur, sulfides, sulphurous