extracts of bacteroides strain pg1 could not dehydrogenate long polymers of peg ( greater than or equal to 1,000 g/mol ) , but the bacterium grew with peg 1000 or peg 20000 as a substrate and therefore possesses a mechanism for peg depolymerization not present in cell extracts .
C0030773
peg 1000
C0032483
peg