1887

Abstract

Summary: Genomic DNA from strain A46 was digested with RI and ligated into λgt11. Two recombinant phages isolated from the gene bank hydrolysed carboxymethylcellulose and were shown to contain the same 2.3 kb RI restriction fragment, which was cloned into pUC12 to generate pBA46. JM83 harbouring pBA46 expressed an endoglucanase (EGA) which hydrolysed a range of other substrates including barley β-glucan, Avicel, filter paper and -nitrophenyl β--cellobioside. Nucleotide sequencing of the strain A46 DNA cloned in pBA46 revealed a single open reading frame (ORF) of 1296 bp, encoding a protein of 48863 Da. Confirmation that the ORF coded for EGA was obtained by comparing the N-terminal sequence of the purified endoglucanase with that deduced from the nucleotide sequence. EGA contains a typical prokaryotic signal peptide at its N-terminus and shows some homology with the family of cellulases. The enzyme does not contain distinct functional domains, which are prevalent in cellulases from subsp. and

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-136-10-2089
1990-10-01
2019-11-18
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-136-10-2089
Loading
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error