Alternate hydrophobic sites on the cell surface of Acinetobacter calcoaceticus RAG-1

Ophry Pines, David Gutnick*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


Mutants of A. calcoaceticus RAG-1 lacking thin fimbriae (35 Å) do not adhere to hydrophobic surfaces [5], or grow on hydrocarbons under conditions of weak agitation and small inocula. Emulsan-deficient derivatives of such mutants, isolated in the present study, (i) lacked cell-surface emulsan, (ii) adhered avidly to hydrocarbons, (iii) lacked thin fimbriae, and (iv) regained the capacity to grow on hydrocarbons. The results show that emulsan masks an alternate hydrophobic site(s) on the cell surface of RAG-1.

Original languageAmerican English
Pages (from-to)307-311
Number of pages5
JournalFEMS Microbiology Letters
Issue number3
StatePublished - May 1984
Externally publishedYes

Bibliographical note

Funding Information:
This work was sponsored in part by a grant from Petroferm Fermentations N.V. We thank Rina Avigad for excellent technical assistance and Y. Delarea for expert electron microscopy.


  • Emulsan
  • adherence
  • capsule
  • exopolysaccharide
  • hydrocarbon


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