CcNiR: Difference between revisions

Line 5:

NO2- + 4 H+ + 6 ferricytochrome c = NH4+ + 6 ferrocytochrome c + 2 H2O

The physiological form of the enzyme is believed to be a double trimer of 2 NrfA and 1 NrfH subunits ([[2j7a]]<ref>pmid 17139260

The physiological form of the enzyme is believed to be a double trimer of 2 NrfA and 1 NrfH subunits ([[2j7a)]]<ref>pmid 17139260

</ref>). The catalytic subunit NrfA is a pentaheme cytochrome c where the short distances between <scene name='CcNiR/Hemes3/5'>hemes</scene> allow a fast and efficient electron transfer: the active site(<scene name='CcNiR/Heme1/1'>heme1</scene>) has been reported as an unusual lysine-coordinated high-spin heme. NrfH is a small membrane-bound cytochrome comprising four c-type heme groups and it serves a double purpose. On one hand, it anchors the catalytic subunits to the membrane. On the other hand, it serves as a quinol oxidase, transferring electrons from the quinone pool to the catalytic subunits. The overall haem arrangement of the NrfHA complex is rather unusal, comprising 28 hemes in a compact arrangement~~<ref>pmid 17139260~~

</ref>. The catalytic subunit NrfA is a pentaheme cytochrome c where the short distances between <scene name='CcNiR/Hemes3/5'>hemes</scene> allow a fast and efficient electron transfer: the active site(<scene name='CcNiR/Heme1/1'>heme1</scene>) has been reported as an unusual lysine-coordinated high-spin heme. NrfH is a small membrane-bound cytochrome comprising four c-type heme groups and it serves a double purpose. On one hand, it anchors the catalytic subunits to the membrane. On the other hand, it serves as a quinol oxidase, transferring electrons from the quinone pool to the catalytic subunits. The overall haem arrangement of the NrfHA complex is rather unusal, comprising 28 hemes in a compact arrangement.

~~</ref>~~.

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@@ Line 5: / Line 5: @@
 NO2- + 4 H+ + 6 ferricytochrome c = NH4+ + 6 ferrocytochrome c + 2 H2O
-The physiological form of the enzyme is believed to be a double trimer of 2 NrfA and 1 NrfH subunits ([[2j7a]]<ref>pmid 17139260
+The physiological form of the enzyme is believed to be a double trimer of 2 NrfA and 1 NrfH subunits ([[2j7a)]]<ref>pmid 17139260
-</ref>). The catalytic subunit NrfA is a pentaheme cytochrome c where the short distances between <scene name='CcNiR/Hemes3/5'>hemes</scene> allow a fast and efficient electron transfer: the active site(<scene name='CcNiR/Heme1/1'>heme1</scene>) has been reported as an unusual lysine-coordinated high-spin heme. NrfH is a small membrane-bound cytochrome comprising four c-type heme groups and it serves a double purpose. On one hand, it anchors the catalytic subunits to the membrane. On the other hand, it serves as a quinol oxidase, transferring electrons from the quinone pool to the catalytic subunits. The overall haem arrangement of the NrfHA complex is rather unusal, comprising 28 hemes in a compact arrangement<ref>pmid 17139260
+</ref>. The catalytic subunit NrfA is a pentaheme cytochrome c where the short distances between <scene name='CcNiR/Hemes3/5'>hemes</scene> allow a fast and efficient electron transfer: the active site(<scene name='CcNiR/Heme1/1'>heme1</scene>) has been reported as an unusual lysine-coordinated high-spin heme. NrfH is a small membrane-bound cytochrome comprising four c-type heme groups and it serves a double purpose. On one hand, it anchors the catalytic subunits to the membrane. On the other hand, it serves as a quinol oxidase, transferring electrons from the quinone pool to the catalytic subunits. The overall haem arrangement of the NrfHA complex is rather unusal, comprising 28 hemes in a compact arrangement.
-</ref>.