PMID- 3098436 OWN - NLM STAT- MEDLINE DCOM- 19870218 LR - 20231213 IS - 0092-8674 (Print) IS - 0092-8674 (Linking) VI - 48 IP - 1 DP - 1987 Jan 16 TI - Functional domains of Pseudomonas exotoxin identified by deletion analysis of the gene expressed in E. coli. PG - 129-36 AB - Pseudomonas exotoxin A is a single chain toxin with three structural domains that inhibits protein synthesis in eukaryotic cells by catalyzing ADP ribosylation of elongation factor 2. To study the function of these domains, we deleted different portions of the PE structural gene and expressed these constructs in E. coli using an inducible T7 promoter. These studies indicate that structural domain Ia is required for cell recognition, that structural domain II is required to translocate the toxin across a cellular membrane, and that structural domain III and a portion of domain Ib are required for ADP ribosylation activity. Toxin lacking domain Ia is about 100-fold less toxic to mice than intact PE and should be a useful molecule for the construction of immunotoxins. FAU - Hwang, J AU - Hwang J FAU - Fitzgerald, D J AU - Fitzgerald DJ FAU - Adhya, S AU - Adhya S FAU - Pastan, I AU - Pastan I LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Cell JT - Cell JID - 0413066 RN - 0 (Bacterial Toxins) RN - 0 (Exotoxins) RN - 0 (Virulence Factors) RN - 20762-30-5 (Adenosine Diphosphate Ribose) RN - EC 2.4.2.- (ADP Ribose Transferases) RN - EC 2.4.2.- (Pentosyltransferases) SB - IM MH - ADP Ribose Transferases MH - Adenosine Diphosphate Ribose/metabolism MH - *Bacterial Toxins MH - Binding Sites MH - Biological Transport MH - Chromosome Deletion MH - Cloning, Molecular MH - Escherichia coli MH - Exotoxins/*genetics/toxicity MH - Pentosyltransferases/metabolism MH - Pseudomonas aeruginosa/*pathogenicity MH - Structure-Activity Relationship MH - *Virulence Factors MH - Pseudomonas aeruginosa Exotoxin A EDAT- 1987/01/16 00:00 MHDA- 1987/01/16 00:01 CRDT- 1987/01/16 00:00 PHST- 1987/01/16 00:00 [pubmed] PHST- 1987/01/16 00:01 [medline] PHST- 1987/01/16 00:00 [entrez] AID - 0092-8674(87)90363-1 [pii] AID - 10.1016/0092-8674(87)90363-1 [doi] PST - ppublish SO - Cell. 1987 Jan 16;48(1):129-36. doi: 10.1016/0092-8674(87)90363-1.