Translation Elongation Factor 1 Functions in the Yeast Saccharomyces cerevisiae

2001 ◽  
Vol 66 (0) ◽  
pp. 439-448 ◽  
Author(s):  
M. ANAND ◽  
L. VALENTE ◽  
A. CARR-SCHMID ◽  
R. MUNSHI ◽  
O. OLAREWAJU ◽  
...  
Genetics ◽  
1995 ◽  
Vol 141 (2) ◽  
pp. 481-489 ◽  
Author(s):  
T G Kinzy ◽  
J L Woolford

Abstract Translation elongation factor 1beta (EF-1beta) catalyzes the exchange of bound GDP for GTP on EF-1alpha. The lethality of a null allele of the TEF5 gene encoding EF-1beta in Saccharomyces cerevisiae was suppressed by extra copies of the TEF2 gene encoding EF-1alpha. The strains with tef5::TRP1 suppressed by extra copies of TEF were slow growing, cold sensitive, hypersensitive to inhibitors of translation elongation and showed increased phenotypic suppression of +1 frameshift and UAG nonsense mutations. Nine dominant mutant alleles of TEF2 that cause increased suppression of frameshift mutations also suppressed the lethality of tef5::TRP1. Most of the strains in which tef5::TRP1 is suppressed by dominant mutant alleles of TEF2 grew more slowly and were more antibiotic sensitive than strains with tef5::TRP1 is suppressed by wild-type TEF2. Two alleles, TEF2-4 and TEF2-10, interact with tef5::TRP1 to produce strains that showed doubling times similar to tef5::TRP1 strains containing extra copies of wild-type TEF2. These strains were less cold sensitive, drug sensitive and correspondingly less efficient suppressor of +1 frameshift mutations. These phenotypes indicate that translation and cell growth are highly sensitive to changes in EF-1alpha and EF-1beta activity.


Gene ◽  
1992 ◽  
Vol 120 (2) ◽  
pp. 315-316 ◽  
Author(s):  
Anneke M. Metz ◽  
Richard T. Timmer ◽  
M.Leah Allen ◽  
Karen S. Browning

Life ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 31 ◽  
Author(s):  
Alessia Marchetta ◽  
Bert Gerrits van den Ende ◽  
Abdullah Al-Hatmi ◽  
Ferry Hagen ◽  
Polona Zalar ◽  
...  

A global set of clinical and environmental strains of the halotolerant black yeast-like fungus Hortaea werneckii are analyzed by multilocus sequencing and AFLP, and physiological parameters are determined. Partial translation elongation factor 1-α proves to be suitable for typing because of the presence/absence of introns and also the presence of several SNPs. Local clonal expansion could be established by a combination of molecular methods, while the population from the Mediterranean Sea water also responds differently to combined temperature and salt stress. The species comprises molecular populations, which in part also differ physiologically allowing further diversification, but clinical strains did not deviate significantly from their environmental counterparts.


Phytotaxa ◽  
2019 ◽  
Vol 425 (5) ◽  
pp. 259-268
Author(s):  
XIAO-XIAO FENG ◽  
JIA-JIE CHEN ◽  
GUO-RONG WANG ◽  
TING-TING CAO ◽  
YONG-LI ZHENG ◽  
...  

During an exploration of plant pathogens in vegetables occuring in Zhejiang province, China, a novel fungal species, was found. Three strains ZJUP0033-4, ZJUP0038-3 and ZJUP0132 were isolated from black round lesions in the stems and leaves of Amaranthus sp. Phylogenetic analyses based on sequences from four genes including rDNA internal transcribed spacer (ITS), translation elongation factor 1-α (EF1-α), histone (HIS) and β-tubulin (TUB) indicated that D. sinensis clustered in a distinct clade closely related to D. neoarctii, D. angelicae, D. subordinaria, D. arctii, D. cuppatea, D. lusitanicae, D. novem, D. infecunda, D. ganjae and D. manihotia. Morphologically, D. sinensis is distinguished by brown, scattered, globose pycnidia and ellipsoid alpha conidia with bi- to multiguttulate.


Phytotaxa ◽  
2021 ◽  
Vol 479 (1) ◽  
pp. 23-43
Author(s):  
NARUEMON HUANALUEK ◽  
RUVISHIKA S. JAYAWARDENA ◽  
SAJEEWA S. N. MAHARACHCHIKUMBURA ◽  
DULANJALEE L. HARISHCHANDRA

Pestalotioid fungi commonly occur as pathogens, endophytes or saprobes. In this study, pestalotioid fungi associated with leaf spots and fruit rots were isolated from Alpinia malaccensis, A. galangal, Annona squamosa, Artocarpus heterophyllus, Citrus sp., Garcinia mangostana, Litsea petiolata, a pteridophyte, and Vitis vinifera in Chiang Rai, Thailand. Based on single- and multi-locus phylogenies using internal transcribed spacer, β-tubulin and partial translation elongation factor 1-α gene regions, along with morphological features, the isolates were identified as two new species, Neopestalotiopsis hydeana and Pestalotiopsis hydei. This is the first time a Pestalotiopsis sp. was reported associated with Litsea petiolata and a Neopestalotiopsis sp. recorded from Alpinia, Annona, Artocarpus, Garcinia and a pteridophyte in the world. This fungal group can be considered as an emerging pathogenic group on different hosts in different climatic conditions. 


2014 ◽  
Vol 53 (3) ◽  
pp. 215-224 ◽  
Author(s):  
Hossein Mirhendi ◽  
Koichi Makimura ◽  
G. Sybren de Hoog ◽  
Ali Rezaei-Matehkolaei ◽  
Mohammad Javad Najafzadeh ◽  
...  

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