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- Publications
- Influence
Diversity of cultivable fungi associated with Antarctic marine sponges and screening for their antimicrobial, antitumoral and antioxidant potential
- M. Henríquez, K. Vergara, +9 authors I. Vaca
- Biology, Medicine
- World journal of microbiology & biotechnology
- 2014
The diversity of sponge-associated fungi has been poorly investigated in remote geographical areas like Antarctica. In this study, 101 phenotypically different fungal isolates were obtained from 11… Expand
Differences in expression of two endoxylanase genes (xynA and xynB) from Penicillium purpurogenum.
- R. Chávez, K. Schachter, +4 authors J. Eyzaguirre
- Biology, Medicine
- Gene
- 26 June 2002
A number of xylanolytic microorganisms secrete to the medium several molecular forms of endoxylanases. The physiological function of these isoforms is not clear; one possibility is that they are… Expand
Electrophoretic karyotype of the filamentous fungus Penicillium purpurogenum and chromosomal location of several xylanolytic genes.
- R. Chávez, F. Fierro, F. Gordillo, J. Francisco Martín, J. Eyzaguirre
- Biology, Medicine
- FEMS microbiology letters
- 18 December 2001
The electrophoretic karyotype of the filamentous fungus Penicillium purpurogenum has been resolved. Using contour-clamped homogeneous electric field gel electrophoresis, five chromosomal bands were… Expand
Cultivable psychrotolerant yeasts associated with Antarctic marine sponges
- I. Vaca, Carolina Faúndez, +6 authors R. Chávez
- Medicine, Biology
- World journal of microbiology & biotechnology
- 2013
Unlike filamentous fungi and bacteria, very little is known about cultivable yeasts associated with marine sponges, especially those from Antarctic seas. During an expedition to King George Island,… Expand
Structure analysis of the endoxylanase A gene from penicillium purpurogenum.
- R. Chávez, C. Almarza, K. Schachter, A. Peirano, P. Bull, J. Eyzaguirre
- Biology, Medicine
- Biological research
- 2001
Penicillium purpurogenum produces several endoxylanases, two of which (XynA and XynB) have been purified and characterized. XynB has been sequenced, and it belongs to glycosyl hydrolase family 11. In… Expand
Cold-Active Xylanase Produced by Fungi Associated with Antarctic Marine Sponges
- Abdiel Del-Cid, Pamela Ubilla, +5 authors R. Chávez
- Biology, Medicine
- Applied Biochemistry and Biotechnology
- 2013
Despite their potential biotechnological applications, cold-active xylanolytic enzymes have been poorly studied. In this work, 38 fungi isolated from marine sponges collected in King George Island,… Expand
Molecular characterization of the niaD and pyrG genes from Penicillium camemberti, and their use as transformation markers
- K. Navarrete, Amanda Roa, I. Vaca, Y. Espinosa, C. Navarro, R. Chávez
- Biology, Medicine
- Cellular & Molecular Biology Letters
- 27 June 2009
Genetic manipulation of the filamentous fungus Penicillium camemberti has been limited by a lack of suitable genetics tools for this fungus. In particular, there is no available homologous… Expand
Detection of arsenic-binding siderophores in arsenic-tolerating Actinobacteria by a modified CAS assay.
- Gerardo Retamal-Morales, Marika Mehnert, +5 authors G. Levicán
- Chemistry, Medicine
- Ecotoxicology and environmental safety
- 15 August 2018
The metalloid arsenic is highly toxic to all forms of life, and in many countries decontamination of water and soil is still required. Some bacteria have mechanisms to detoxify arsenic and can live… Expand
Penicillium purpurogenum produces a family 1 acetyl xylan esterase containing a carbohydrate-binding module: characterization of the protein and its gene.
- F. Gordillo, V. Caputo, +7 authors J. Eyzaguirre
- Biology, Medicine
- Mycological research
- 1 October 2006
At least three acetyl xylan esterases (AXE I, II and III) are secreted by Penicillium purpurogenum. This publication describes more detailed work on AXE I and its gene. AXE I binds cellulose but not… Expand
A preparative method for the purification of isopenicillin N from genetically blocked Acremonium chrysogenum strain TD189: studies on the degradation kinetics and storage conditions
- I. Vaca, J. Casqueiro, R. V. Ullán, Ángel Rumbero, R. Chávez, J. Martín
- Chemistry, Medicine
- The Journal of Antibiotics
- 25 June 2011
A protocol for preparative isopenicillin N (IPN) purification, a highly interesting and hitherto unavailable intermediate of the penicillin and cephalosporin biosynthetic pathway due to its high… Expand
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