<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">A. Conesa</style></author><author><style face="normal" font="default" size="100%">Weelink, G.</style></author><author><style face="normal" font="default" size="100%">van den Hondel, C. A.</style></author><author><style face="normal" font="default" size="100%">Punt, P. J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">C-terminal propeptide of the Caldariomyces fumago chloroperoxidase: an intramolecular chaperone?</style></title><secondary-title><style face="normal" font="default" size="100%">FEBS Lett</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Amino Acid Sequence Ascomycota/*enzymology/genetics Aspergillus niger/genetics Base Sequence Chloride Peroxidase/biosynthesis/*chemistry/genetics DNA Primers/genetics Enzyme Precursors/biosynthesis/chemistry/genetics Gene Expression Molecular Chaperones/b</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2001</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&amp;db=PubMed&amp;dopt=Citation&amp;list_uids=11513866</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">2-3</style></number><volume><style face="normal" font="default" size="100%">503</style></volume><pages><style face="normal" font="default" size="100%">117-20</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The Caldariomyces fumago chloroperoxidase (CPO) is synthesised as a 372-aa precursor which undergoes two proteolytic processing events: removal of a 21-aa N-terminal signal peptide and of a 52-aa C-terminal propeptide. The Aspergillus niger expression system developed for CPO was used to get insight into the function of this C-terminal propeptide. A. niger transformants expressing a CPO protein from which the C-terminal propeptide was deleted failed in producing any extracellular CPO activity, although the CPO polypeptide was synthesised. Expression of the full-length gene in an A. niger strain lacking the KEX2-like protease PclA also resulted in the production of CPO cross-reactive material into the culture medium, but no CPO activity. Based on these results, a function of the C-terminal propeptide in CPO maturation is indicated.</style></abstract><notes><style face="normal" font="default" size="100%">Conesa, A Weelink, G van den Hondel, C A Punt, P J Netherlands FEBS letters FEBS Lett. 2001 Aug 17;503(2-3):117-20.</style></notes></record></records></xml>