The Wood Ljungdahl pathway comprises two branches: {HEAD ~ the Eastern, or methyl, branch} that allows {TAIL ~ the conversion} of CO2 to methyltetrahydrofolate and the Western, or carbonyl, branch that allows the conversion of methyl THF, CO, and Coenzyme A into acetyl CoA  
allows
The Wood Ljungdahl pathway comprises two branches : { HEAD ~ the Eastern , or methyl , branch } that allows { TAIL ~ the conversion } of CO2 to methyltetrahydrofolate and the Western , or carbonyl , branch that allows the conversion of methyl THF , CO , and Coenzyme A into acetyl CoA
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH