_EC 2.1.1.253 [Methyl-Co(III) tetramethylammonium-specific corrinoid protein]:coenzyme 0 PDB entries  
EC 2.-.-.- Transferases. [15,100 PDB entries]
EC 2.1.-.- Transferring one-carbon groups. [1,417 PDB entries]
EC 2.1.1.- Methyltransferases. [1,143 PDB entries]
EC 2.1.1.253 [Methyl-Co(III) tetramethylammonium-specific corrinoid protein]:coenzyme [-]    

Reaction: A [methyl-Co(III) tetramethylammonium-specific corrinoid protein] + coenzyme M = methyl-CoM + a [Co(I) tetramethylammonium-specific corrinoid protein].
 

[methyl-Co(III) tetramethylammonium-specific corrinoid protein]
+
coenzyme M
=
methyl-CoM
+ [Co(I) tetramethylammonium-specific corrinoid protein]
Molecule diagrams generated from .mol files obtained from the KEGG ftp site.

Comments: The enzyme, which is involved in methanogenesis from tetramethylammonium, catalyzes the transfer of a methyl group from a corrinoid protein (see Ec 2.1.1.252), where it is bound to the cobalt cofactor, to coenzyme M, forming the substrate for ec 2.8.4.1, the enzyme that catalyzes the final step in methanogenesis.
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There are no PDB entries in enzyme class E.C.2.1.1.253