New Red Pigment of Liver Is Giant of Body's Chemicals

1938 ◽  
Vol 33 (21) ◽  
pp. 327
Keyword(s):  
Red Pigment

scholarly journals Revision in the first steps of the biosynthesis of the red antibiotic prodigiosin: use of a synthetic thioester to validate a new intermediate

2021 ◽  
Author(s):  
Maxime Couturier ◽  
Hiral D. Bhalara ◽  
Rita E. Monson ◽  
George P. C. Salmond ◽  
Finian J. Leeper
Keyword(s):  
Biosynthetic Pathway ◽  
Red Pigment

A revision is proposed to the biosynthetic pathway to the well-known red pigment prodigiosin via a new thioester intermediate.

Kinetic analysis of red pigment and citrinin production by Monascus ruber as a function of organic acid accumulation

2000 ◽  
Vol 27 (8) ◽  
pp. 619-625 ◽  
Author(s):  
Hassan Hajjaj ◽  
Philippe Blanc ◽  
Evelyne Groussac ◽  
Jean-Louis Uribelarrea ◽  
Gérard Goma ◽  
...  
Keyword(s):  
Organic Acid ◽  
Kinetic Analysis ◽  
Red Pigment ◽  
Monascus Ruber ◽  
Acid Accumulation

Peptidergic modulation of a multioscillator system in the lobster. I. Activation of the cardiac sac motor pattern by the neuropeptides proctolin and red pigment-concentrating hormone

1989 ◽  
Vol 61 (4) ◽  
pp. 833-844 ◽  
Author(s):  
P. S. Dickinson ◽  
E. Marder
Keyword(s):  
Nervous System ◽  
Motor Neurons ◽  
Motor Pattern ◽  
Stomatogastric Ganglion ◽  
Red Pigment ◽  
Stomatogastric Nervous System ◽  
Two Phase ◽  
Motor Patterns ◽  
Neuronal Element

1. The cardiac sac motor pattern consists of slow and irregular impulse bursts in the motor neurons [cardiac sac dilator 1 and 2 (CD1 and CD2)] that innervate the dilator muscles of the cardiac sac region of the crustacean foregut. 2. The effects of the peptides, proctolin and red pigment-concentrating hormone (RPCH), on the cardiac sac motor patterns produced by in vitro preparations of the combined stomatogastric nervous system [the stomatogastric ganglion (STG), the paired commissural ganglia (CGs), and the oesophageal ganglion (OG)] were studied. 3. Bath applications of either RPCH or proctolin activated the cardiac sac motor pattern when this motor pattern was not already active and increased the frequency of the cardiac sac motor pattern in slowly active preparations. 4. The somata of CD1 and CD2 are located in the esophageal and stomatogastric ganglia, respectively. Both neurons project to all four of the ganglia of the stomatogastric nervous system. RPCH elicited cardiac sac motor patterns when applied to any region of the stomatogastric nervous system, suggesting a distributed pattern generating network with multiple sites of modulation. 5. The anterior median (AM) neuron innervates the constrictor muscles of the cardiac sac. The AM usually functions as a part of the gastric mill pattern generator. However, when the cardiac sac is activated by RPCH applied to the stomatogastric ganglion, the AM neuron becomes active in antiphase with the cardiac sac dilator bursts. This converts the cardiac sac motor pattern from a one-phase rhythm to a two-phase rhythm. 6. These data show that a neuropeptide can cause a neuronal element to switch from being solely a component of one neuronal circuit to functioning in a second one as well. This example shows that peptidergic "reconfiguration" of neuronal networks can produce substantial changes in the behavior of associated neurons.

A novel red pigment from marineArthrobactersp. G20 with specific anticancer activity

2017 ◽  
Vol 123 (5) ◽  
pp. 1228-1236 ◽  
Author(s):  
S. Afra ◽  
A. Makhdoumi ◽  
M. M. Matin ◽  
J. Feizy
Keyword(s):  
Anticancer Activity ◽  
Red Pigment

scholarly journals The source, processing and use of red pigment based on hematite and cinnabar at Gramalote, an early Initial Period (1500–1200 cal. B.C.) maritime community, north coast of Peru

2016 ◽  
Vol 5 ◽  
pp. 45-60 ◽  
Author(s):  
Gabriel Prieto ◽  
Véronique Wright ◽  
Richard L. Burger ◽  
Colin A. Cooke ◽  
Elvira L. Zeballos-Velasquez ◽  
...  
Keyword(s):  
Initial Period ◽  
North Coast ◽  
Red Pigment ◽  
North Coast Of Peru ◽  
Maritime Community

scholarly journals THE EXTRACELLULAR RELEASE OF ECHINOCHROME

1946 ◽  
Vol 29 (5) ◽  
pp. 267-275 ◽  
Author(s):  
Herbert Shapiro
Keyword(s):  
Sea Urchin ◽  
Sea Water ◽  
Potassium Content ◽  
Red Pigment ◽  
Anaerobic Conditions ◽  
Outward Diffusion ◽  
Arbacia Punctulata ◽  
Extracellular Release

A study was made of the diffusion of the red pigment echinochrome from the eggs of the sea urchin, Arbacia punctulata, into sea water. Unfertilized eggs retained their pigment, over periods of hours. Outward diffusion of pigment from unfertilized eggs normally is entirely negligible, or does not occur at all. Enchancing the calcium or potassium content of the artificial sea water (while retaining isosmotic conditions) did not induce pigment release. Under anaerobic conditions, unfertilized eggs release pigment in small quantities. Fertilization alone brings about echinochrome release. Fertilized eggs invariably released pigment, whether in normal sea water, or sea water with increased calcium or potassium. This diffusion of the pigment began during the first cleavage, possibly soon after fertilization. The pigment release is not a consequence solely of the cell's permeability to echinochrome (or chromoprotein, or other pigment combination) but is preceded by events leading to a release of echinochrome from the granules in which it is concentrated within the cell. These events may be initiated by activation or by anaerobiosis. The phenomenon was not due to cytolysis.

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