the membrane penicillinase ( penicillin amido-beta-lactamhydrolase , ec 3.5.2.6 ) from bacillus licheniformis , the semliki forest virus spike proteins , and the sendai virus glycoproteins have each been isolated as soluble protein aggregates that are virtually free of lipid and detergent .
C0030841
penicillinase
C0597979
beta-lactamhydrolase