The Purification and Structure of Tryptophan Synthetase from Neurospora crassa

1974 ◽  
Vol 2 (6) ◽  
pp. 1331-1332 ◽  
Author(s):  
DAPHNE OWENS ◽  
CHRISTOPHER J. BAILEY
Keyword(s):  
Neurospora Crassa ◽  
Tryptophan Synthetase

scholarly journals Molecular analysis of intragenic recombination at the tryptophan synthetase locus in Neurospora crassa

2013 ◽  
Vol 92 (3) ◽  
pp. 523-528 ◽  
Author(s):  
A. WIEST ◽  
D. BARCHERS ◽  
M. EATON ◽  
R. HENDERSON ◽  
R. SCHNITTKER ◽  
...  
Keyword(s):  
Neurospora Crassa ◽  
Molecular Analysis ◽  
Intragenic Recombination ◽  
Tryptophan Synthetase

ON THE DEVELOPMENT OF INCREASED TRYPTOPHAN SYNTHETASE ENZYME ACTIVITY BY CELL-FREE EXTRACTS OF NEUROSPORA CRASSA

1959 ◽  
Vol 37 (1) ◽  
pp. 1417-1430 ◽  
Author(s):  
S. D. Wainwright
Keyword(s):  
Energy Source ◽  
Neurospora Crassa ◽  
Calcium Ions ◽  
Polyvinyl Acetate ◽  
Enzymic Activity ◽  
Inorganic Salts ◽  
Synthetase Activity ◽  
Cell Free Extract ◽  
A Cell ◽  
Tryptophan Synthetase

A cell-free extract from conidia of Neurospora crassa developed increased tryptophan synthetase activity when incubated with a mixture of amino acids, a source of energy, and inorganic salts. Fifteen individual acids were required for development of maximal increases of enzymic activity. Either hexose diphosphate or adenosine triphosphate could serve as energy source. Diphosphopyridine nucleotide, polyvinyl acetate, and magnesium and calcium ions were required. The addition of ribonuclease enzyme, ethionine, fluorophenylalanine, thienylalanine, or various antibiotics prevented development of increased tryptophan synthetase activity. The increase of activity was accompanied by a net synthesis of protein.

ON THE DEVELOPMENT OF INCREASED TRYPTOPHAN SYNTHETASE ENZYME ACTIVITY BY CELL-FREE EXTRACTS OF NEUROSPORA CRASSA

1959 ◽  
Vol 37 (12) ◽  
pp. 1417-1430 ◽  
Author(s):  
S. D. Wainwright
Keyword(s):  
Energy Source ◽  
Neurospora Crassa ◽  
Calcium Ions ◽  
Polyvinyl Acetate ◽  
Enzymic Activity ◽  
Inorganic Salts ◽  
Synthetase Activity ◽  
Cell Free Extract ◽  
A Cell ◽  
Tryptophan Synthetase

A cell-free extract from conidia of Neurospora crassa developed increased tryptophan synthetase activity when incubated with a mixture of amino acids, a source of energy, and inorganic salts. Fifteen individual acids were required for development of maximal increases of enzymic activity. Either hexose diphosphate or adenosine triphosphate could serve as energy source. Diphosphopyridine nucleotide, polyvinyl acetate, and magnesium and calcium ions were required. The addition of ribonuclease enzyme, ethionine, fluorophenylalanine, thienylalanine, or various antibiotics prevented development of increased tryptophan synthetase activity. The increase of activity was accompanied by a net synthesis of protein.

A RIBONUCLEIC ACID FRACTION OF NEUROSPORA CRASSA EVOKING DEVELOPMENT OF A PSEUDO-TRYPTOPHAN SYNTHETASE ACTIVITY BY EXTRACTS OF MUTANTS TD1, TD2, AND TD3

1965 ◽  
Vol 43 (11) ◽  
pp. 1813-1828 ◽  
Author(s):  
S. D. Wainwright ◽  
E. Sandra McFarlane
Keyword(s):  
Neurospora Crassa ◽  
Type Strain ◽  
Wild Type Strain ◽  
Enzymic Activity ◽  
Synthetase Activity ◽  
Acid Fraction ◽  
Wild Type ◽  
Mutant Strains ◽  
Tryptophan Synthetase

"Soluble RNA" fractions isolated from the wild-type strain of Neurospora crassa evoked development of a pseudo-tryptophan synthetase enzyme activity in vitro by extracts of mutant strains lacking ability to produce the enzymic activity. The RNA fractions contained no detectable "template RNA". Some properties of the component eliciting development of pseudo-tryptophan synthetase activity are reported.

Sign in / Sign up

Export Citation Format

Share Document