Functional redundancy in Echinocandin B in-cluster transcription factor ecdB of Emericella rugulosa NRRL 11440

Echinocandin B is a potent antifungal against the majority of fungal pathogens and its biosynthesis occurred by ecd and hty gene clusters in Emericella rugulosa NRRL 11440. We elucidated the functional necessity of in-clustered transcription factor; ecdB in the production of echinocandin B. We deleted the ecdB gene and found that ΔecdB mutant has no significant effect on echinocandin B production. The expression level of most of the ecd and hty cluster genes was not significantly altered except few of them up-regulated in knockout strain. The complete abrogation in ecdB gene expression was observed in ΔecdB strain. However, the interactions of purified EcdB protein with DNA sequence of ecdA, ecdH, ecdK and ecdI promoter was confirmed in-vitro. Our results conclude that EcdB protein in-vitro binds to the ecdA, ecdH, ecdK and ecdI promoter but in-vivo, it could not significantly affect the gene expression and echinocandin B production in Emericella rugulosa.

Medienart:

E-Artikel

Erscheinungsjahr:

2018

Erschienen:

2018

Enthalten in:

Zur Gesamtaufnahme - volume:19

Enthalten in:

Biotechnology reports (Amsterdam, Netherlands) - 19(2018) vom: 09. Sept., Seite e00264

Sprache:

Englisch

Beteiligte Personen:

Kumar, Arvind [VerfasserIn]
Jaiswal, Varun [VerfasserIn]
Kumar, Vinay [VerfasserIn]
Dey, Amitava [VerfasserIn]
Kumar, Antresh [VerfasserIn]

Links:

Volltext

Themen:

Arg, Arginine
Biosynthetic regulation
Bp, base pair
CTAB, cetyl trimethylammonium bromide
D, day
ECB, echinocandin B
Echinocandin B
Emericella rugulosa
Functional redundancy
GMM, glucose minimal medium
H, hour
HPLC, high performance liquid chromatography
ICU, intensive care unit
In-clustered transcription factor
Journal Article
Kb, kilo base pair
MEGA, molecular evolutionary genetics analysis
MP, maximum parsimony
ORF, open reading frame
PCR, polymerase chain reaction
RT-PCR, reverse transcription polymerase chain reaction
SPR, subtree-pruning-regrafting
TF, transcription factor
UTR, un-translated region
WT, wild type
YG, yeast glucose medium

Anmerkungen:

Date Revised 29.03.2024

published: Electronic-eCollection

Citation Status PubMed-not-MEDLINE

doi:

10.1016/j.btre.2018.e00264

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM286346583