ADP-ribosylation of rye histones

1980 ◽  
Vol 58 (9) ◽  
pp. 692-695 ◽  
Author(s):  
A. Laroche ◽  
J. Plante ◽  
G. Beaumont ◽  
G. G. Poirier
Keyword(s):  
Chain Length ◽  
Gel Electrophoresis ◽  
Average Chain Length ◽  
Histone H2b ◽  
Adp Ribosylation ◽  
Insoluble Material ◽  
Exclusion Chromatography

Chromatin from etiolated rye seedlings synthesized protein-bound, acid-insoluble material from [3H]NAD, presumably poly(ADP-ribose). [3H]ADP-ribosylated histone fractions were isolated from crude chromatin and characterized by gel electrophoresis and exclusion chromatography. It was found that histone H2B was the main acceptor, that H2A and H1 were modified to a lesser extent, and that H3 and H4 were only slightly modified. The average chain length on purified histones was 2.5 units of polymer.

Röntgenbeugungsuntersuchung an geschmolzenem Selen und Tellur sowie an Legierungen des Systems Selen—Tellur/ X-ray Diffraction Study of Molten Selenium, and Tellurium and of Molten Selenium — Tellurium-Alloys

1975 ◽  
Vol 30 (12) ◽  
pp. 1633-1639 ◽  
Author(s):  
W. Hoyer ◽  
E. Thomas ◽  
M. Wobst
Keyword(s):  
Chain Length ◽  
Short Range ◽  
Short Range Order ◽  
Coordination Shell ◽  
Range Order ◽  
Average Chain Length ◽  
X Ray Diffraction ◽  
Coordination Numbers ◽  
Nearest Neighbours ◽  
Increasing Temperature

Abstract At temperatures just above the melting point molten Selenium seems to be a mixture of long chains and eight-membered rings. With increasing temperature the number of rings and the average chain length decrease. At 460 °C the average chain length lies in the range of 10 atoms.In a slightly supercooled Tellurium-melt the number of first neighbours is two. The atoms are arranged in chains. Selenium rich Se-Te-alloy-melts are built up of mixed chains. It seems to be possible, that a smaller part of atoms forms Se6Te2 rings. At Tellurium concentrations higher than approximately 50 at.-% the chainlike structure with two next nearest neighbours changes to a disturbed Arsen-like short range order. The number of electrons in the first coordination shell, the short range order parameter introduced by Cowley and the partial coordination numbers show that Se-Te-alloys are of the "solution system" type, but in the whole concentration range for each atom there is a tendency to have "strange coordination".

scholarly journals Prenylation of Saccharomyces cerevisiae Chs4p Affects Chitin Synthase III Activity and Chitin Chain Length

2006 ◽  
Vol 6 (2) ◽  
pp. 328-336 ◽  
Author(s):  
Kariona A. Grabińska ◽  
Paula Magnelli ◽  
Phillips W. Robbins
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Chain Length ◽  
Attachment Site ◽  
Chitin Synthase ◽  
Yeast Cells ◽  
Average Chain Length ◽  
Calcofluor White ◽  
Protein Factor

ABSTRACT Chs4p (Cal2/Csd4/Skt5) was identified as a protein factor physically interacting with Chs3p, the catalytic subunit of chitin synthase III (CSIII), and is indispensable for its enzymatic activity in vivo. Chs4p contains a putative farnesyl attachment site at the C-terminal end (CVIM motif) conserved in Chs4p of Saccharomyces cerevisiae and other fungi. Several previous reports questioned the role of Chs4p prenylation in chitin biosynthesis. In this study we reinvestigated the function of Chs4p prenylation. We provide evidence that Chs4p is farnesylated by showing that purified Chs4p is recognized by anti-farnesyl antibody and is a substrate for farnesyl transferase (FTase) in vitro and that inactivation of FTase increases the amount of unmodified Chs4p in yeast cells. We demonstrate that abolition of Chs4p prenylation causes a ∼60% decrease in CSIII activity, which is correlated with a ∼30% decrease in chitin content and with increased resistance to the chitin binding compound calcofluor white. Furthermore, we show that lack of Chs4p prenylation decreases the average chain length of the chitin polymer. Prenylation of Chs4p, however, is not a factor that mediates plasma membrane association of the protein. Our results provide evidence that the prenyl moiety attached to Chs4p is a factor modulating the activity of CSIII both in vivo and in vitro.

scholarly journals Gamma-radiation induced damage of proteins in the thick fraction of egg white

2005 ◽  
Vol 70 (11) ◽  
pp. 1255-1262 ◽  
Author(s):  
Marija Vuckovic ◽  
Marija Radojcic ◽  
Bratoljub Milosavljevic
Keyword(s):  
Ionizing Radiation ◽  
Gel Electrophoresis ◽  
Dose Range ◽  
Polyacrylamide Gel Electrophoresis ◽  
Egg White ◽  
Oh Radical ◽  
Low Doses ◽  
Gel Structure ◽  
Exclusion Chromatography ◽  
Saturated Sample

The thick fraction of egg white saturated with either N2O or Ar was irradiated in the dose range 1.5-45 kGy at 60Co gamma source. The gel structure decomposition and other processes accompanied with changes in protein molecular mass were followed by Sephadex G-200 exclusion chromatography, denaturing SDS-polyacrylamide gel electrophoresis, viscosity and turbidity measurements. The complex behavior of viscosity was observed in the N2O saturated sample (where the hydrated electron was converted into the OH radical); the initial abrupt decrease that gradually slows down reaching the minimum at 12 kGy (?min = 2.7 mPa s) followed by the slow rise was measured. The Ar saturated sample ([eaq-]?[OH]) showed both the significantly faster initial decrease and lower viscosity minimum (?min = 2.2 mPa s). The combined Sephadex G-200 exclusion chromatography and denaturing SDS-polyacrylamide gel electrophoresis data revealed that the three-dimensional egg white (hydrated) gel structure was (efficiently) decomposed even in the N2O saturated sample. The protein scission was detected in the entire dose range studied, while the protein agglomeration is not noticed at low doses (around 1.5 kGy); however, it dominates at higher doses. In the highest dose region studied, the loss of structure in SDS-PAGE chromatograms indicates that the agglomerates are formed from protein fragments rather than from intact proteins. The continuous linear increase in turbidity was measured. The results obtained indicate that ionizing radiation causes the breakdown of the protein network of the thick fraction of egg white via the reduction of S-S bridges by the hydrated electron and the protein fragmentation due to the direct action of ionizing radiation. The protein agglomeration is initiated by the reaction of the OH radical; its inefficiency at low doses is attributed to the glucose antioxidant properties and radical immobility. .

scholarly journals Functional Interplay between Histone H2B ADP-Ribosylation and Phosphorylation Controls Adipogenesis

2020 ◽  
Vol 79 (6) ◽  
pp. 934-949.e14 ◽  
Author(s):  
Dan Huang ◽  
Cristel V. Camacho ◽  
Rohit Setlem ◽  
Keun Woo Ryu ◽  
Balaji Parameswaran ◽  
...  
Keyword(s):  
Histone H2b ◽  
Adp Ribosylation

scholarly journals Nonacosan-10-ol and n-Alkanes in Leaves of Pinus pinaster

2020 ◽  
Vol 15 (5) ◽  
pp. 1934578X2092607
Author(s):  
Biljana Nikolić ◽  
Marina Todosijević ◽  
Iris Đorđević ◽  
Jovana Stanković ◽  
Zorica S. Mitić ◽  
...  
Keyword(s):  
Chain Length ◽  
Pinus Pinaster ◽  
Cuticular Wax ◽  
Short Chain ◽  
Average Chain Length ◽  
Carbon Preference Index ◽  
Preference Index ◽  
Long Chain

In leaf cuticular wax of Pinus pinaster, content of nonacosan-10-ol is high (77.1% on average). n-Alkanes ranged from C18 to C35 with the most dominant C29 (24.8%). The carbon preference index (CPItotal) ranged from 3.1 to 5.6 (4.0 on average), while the average chain length (ACLtotal) ranged from 14.0 to 17.0 (14.8 on average). Long-chain n-alkanes ( n-C25-35) strongly dominated (80.1%) over middle-chain ( n-C21-24 = 18.9%) and short-chain ( n -C18-20 = 0.9%) n-alkanes.

Glycogen with short average chain length enhances bacterial durability

2011 ◽  
Vol 98 (9) ◽  
pp. 719-729 ◽  
Author(s):  
Liang Wang ◽  
Michael J. Wise
Keyword(s):  
Chain Length ◽  
Average Chain Length

scholarly journals Site-specific ADP-ribosylation of histone H2B in response to DNA double strand breaks

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Alina Rakhimova ◽  
Seiji Ura ◽  
Duen-Wei Hsu ◽  
Hong-Yu Wang ◽  
Catherine J. Pears ◽  
...  
Keyword(s):  
Double Strand Breaks ◽  
Dna Double Strand Breaks ◽  
Histone H2b ◽  
Site Specific ◽  
Strand Breaks ◽  
Adp Ribosylation
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