heme group

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heme group

Postby 605136321 » Sun Dec 08, 2019 9:15 pm

whats a heme group

Anokhi Patel 2B
Posts: 76
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Re: heme group

Postby Anokhi Patel 2B » Sun Dec 08, 2019 9:24 pm

a heme group is what allows myoglobin and hemoglobin to bind the Fe atom to oxygen.

Ariana Iranmahboub1G
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Re: heme group

Postby Ariana Iranmahboub1G » Sun Dec 08, 2019 9:39 pm

Heme is a ringlike organic compound that is known as porphyrin, which an iron atom is bonded too. There are four heme groups in hemoglobin. The iron atom is what binds oxygen as our blood travels through our vessels.

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Re: heme group

Postby Mulin_Li_2J » Sun Dec 08, 2019 11:42 pm

This is a heme group, with Fe ion at the center and surrounded by four coordinated N atoms. Typically, Fe ion in the heme group will bind to six ligands; in a hemoglobin, the other two ligands usually are an oxygen molecule and an amino acid histidine.
200px-Heme_b.svg.png (9.25 KiB) Viewed 59 times

Jacob Motawakel
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Re: heme group

Postby Jacob Motawakel » Sun Dec 08, 2019 11:44 pm

Heme group has Fe in the center, and 4 N atoms binded with an additional 2 lone pairs of electrons on the Fe. An oxygen can bind to one of the lone pairs.

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