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  1. Heme - Wikipedia

    The most common type is heme B; other important types include heme A and heme C. Isolated hemes are commonly designated by capital letters while hemes bound to proteins are designated by lower …

  2. What Is a Heme Molecule and What Is Its Function?

    Aug 2, 2025 · A heme molecule is a fundamental organic, ring-shaped structure found throughout biological systems. Its unique architecture allows it to host an iron atom, making it a versatile …

  3. Heme: The Lord of the Iron Ring - PMC

    Heme is an iron-protoporphyrin complex with an essential physiologic function for all cells, especially for those in which heme is a key prosthetic group of proteins such as hemoglobin, myoglobin, and …

  4. Heme | chemical compound | Britannica

    Heme is composed of a ringlike organic compound known as a porphyrin, to which an iron atom is attached. It is the iron atom that reversibly binds oxygen as the blood travels between the lungs and …

  5. HEME Definition & Meaning - Merriam-Webster

    The meaning of HEME is the deep red iron-containing prosthetic group C34H32N4O4Fe of hemoglobin and myoglobin.

  6. Heme - an overview | ScienceDirect Topics

    Heme is an iron-containing molecule within hemoglobin that serves as the site for oxygen binding. Owing to its potent reactivity, homeostasis of heme is tightly regulated and controlled via its …

  7. Biochemistry, Heme Synthesis - StatPearls - NCBI Bookshelf

    Heme is a porphyrin ring complexed with ferrous iron and protoporphyrin IX. Heme is an essential prosthetic group in proteins that is necessary as a subcellular compartment to perform diverse …

  8. What Is Heme and Its Function in the Body? - Biology Insights

    Jun 22, 2025 · Heme is a specialized molecule built around a central iron atom, forming a complex organic ring structure. It is a component of several important proteins involved in functions ranging …

  9. Heme - Wikiwand

    Heme (American English), or haem (Commonwealth English, both pronounced / hi:m / HEEM), is a ring-shaped iron-containing molecule that commonly serves as a ligand of various proteins, more notably …

  10. Definition of heme - NCI Dictionary of Cancer Terms

    The heme part of hemoglobin is the substance inside red blood cells that binds to oxygen in the lungs and carries it to the tissues.