Met repressor: Difference between revisions
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<StructureSection load='1mjo' size='450' side='right' scene='53/536702/Cv/1' caption='EcMR (mutant) complex with corepressor SAM, Ca+2 ion (green) and DNA [[1mjo]]'> | |||
== Function == | == Function == | ||
'''Met repressor''' (MR) interacts with the DNA operator (Met box) repressing methionine synthesis. The co-repressor of MR is S-adenosyl methionine (SAM) which is a product of methionine synthesis. Binding of SAM to MR increases the repressor affinity to the DNA thus halting methionine synthesis<ref>PMID:8092669</ref>. For additional details see<br /> | '''Met repressor''' (MR) interacts with the DNA operator (Met box) repressing methionine synthesis. The co-repressor of MR is S-adenosyl methionine (SAM) which is a product of methionine synthesis. Binding of SAM to MR increases the repressor affinity to the DNA thus halting methionine synthesis<ref>PMID:8092669</ref>. For additional details see<br /> | ||
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== Structural highlights == | == Structural highlights == | ||
SAM binds to MR in a hydrophobic pocket between 2 monomers<ref>PMID:10986458</ref>. | <scene name='53/536702/Cv/7'>EcMR (mutant) with corepressor SAM, Ca+2 ion and DNA</scene>. <scene name='53/536702/Cv/8'>SAM binds to MR in a hydrophobic pocket between 2 monomers</scene><ref>PMID:10986458</ref>. Water molecules are shown as red spheres. | ||
</StructureSection> | |||
== 3D Structures of Met repressor == | == 3D Structures of Met repressor == | ||
