(n.) A green pigment present in the bile, formed from bilirubin by oxidation.
Example Sentences:
(1) The basis of the assay is the detection of [14C]bilirubin formation in a coupled enzyme assay involving HO and biliverdin reductase actions, respectively.
(2) Photoisomerization is the initial process, followed by photooxidation to degradation products of the tetrapyrrole skeleton, with formation of biliverdin as an intermediate.
(3) It was found that the basicity of biliverdins increases with the stretching of the conformation.
(4) The number of peroxyl radicals trapped per molecule of BR-DT is 1.9, compared to 4.7 trapped per molecule of biliverdin, the water-soluble physiological precursor of bilirubin.
(5) No biliverdin could be detected in the blood plasma.
(6) Etheno-NADP fluorescence is enhanced in enzyme:etheno-NADP complexes but quenched in enzyme:biliverdin:etheno-NADP complexes.
(7) A new colorimetric method for the assay of biliverdin in biological fluids is described.
(8) Biliary excretion rate of bilirubin and biliverdin from fasted and fed conscious rabbits has been investigated.
(9) The substrate specificity of the different forms of rat liver biliverdin reductase was examined using synthetic biliverdins.
(10) In every case the P enantiomers were bound in excess to the M enantiomers, with exception of the 5-syn, 10-syn, 15-anti biliverdin where the M enantiomer bound preferentially to the protein.
(11) During a five day period of captivity, gallbladder volume remained relatively constant while bilirubin and biliverdin content increased two to three fold.
(12) In this study, incubation of explants from such seedlings with [14C]biliverdin IX alpha led to rapid covalent incorporation of radiolabel into a single 124-kDa polypeptide in soluble protein extracts.
(13) The similarity of the structural features of biliverdin reductase with those of several dehydrogenases is discussed.
(14) The enzyme fractions, when supplemented with a light-driven ferredoxin-reducing photosystem I fraction derived from spinach leaves, catalyzed light-dependent transformation of protoheme to biliverdin IX alpha and biliverdin IX alpha to phycobilins, with or without the addition of NADPH and ferredoxin-NADP+ reductase.
(15) The biliverdin in A. japonica is an open form molecule with external hydrogen bond or weak ester bond interacting with the carrier protein.
(16) From them we extracted green pigment(s), of which the absorption spectrum closely resembled that of biliverdin, suggesting that a large amount of the endogenous heme of E. coli was actually degraded to biliverdin by the expressed heme oxygenase.
(17) In alkaline solution the compound exhibits an absorption peak at 840 nm, and when reduced with Na(2)S(2)O(4), it is readily converted to biliverdin which exhibits a large absorption with a peak originally at 800 nm, being followed by a gradual shift to 760 nm.
(18) Unlike the few known bilirubin-oxidizing enzymes, the orange enzyme does not produce biliverdin as a product, does not seem to require oxygen, and has a unique absorption spectrum of its products.
(19) An analysis of the reconstitution of biliverdins with extended conformations and horse heart apomyoglobin was carried out.
(20) Hematobiliverdin IX alpha was also a good substrate of biliverdin reductase.
Pigment
Definition:
(n.) Any material from which a dye, a paint, or the like, may be prepared; particularly, the refined and purified coloring matter ready for mixing with an appropriate vehicle.
(n.) Any one of the colored substances found in animal and vegetable tissues and fluids, as bilirubin, urobilin, chlorophyll, etc.
(n.) Wine flavored with species and honey.
Example Sentences:
(1) The results also suggest that the dispersed condition of pigment in the melanophores represents the "resting state" of the melanophores when they are under no stimulation.
(2) Differences between the albino vs pigmented strains were observed following injections of saline.
(3) Two lectins, wheat germ agglutinin (WGA) and peanut agglutinin (PNA), were used to compare domains within the interphotoreceptor matrices (IPM) of the cat and monkey, two species where the morphological relationship between the retinal pigment epithelium (RPE) and photoreceptors is distinctly different.
(4) Uptake studies with 22Na were performed in cultured bovine pigmented ciliary epithelial cells, in order to characterize mechanisms of Na+ transport.
(5) CW Nd:YAG light transmitted by fiber optic cable and sapphire crystal was applied transsclerally to the ciliary body of pigmented and albino rabbits.
(6) The evolution and function of multiple forms of a given photosynthetic pigment in vivo are discussed.
(7) Changes in protein phosphorylation induced by phagocytic challenge were identified in cultured rat retinal pigment epithelium (RPE) following exposure to isolated rat rod outer segments (ROS) or to polystyrene latex microspheres (PSL).
(8) Both categories frequently showed pellagrous pigmentation and mucocutaneous signs of B-vitamin deficiency.
(9) We show that, in digitonin-permeabilized goldfish xanthophores, the pigment organelles can be induced to disperse by a combination of cAMP, ATP, and xanthophore cytosol.
(10) A red pigment produced by the actinomycete strain B 4358 was identified as butyl-meta-cycloheptylprodiginine (4) by 1H, 13C and correlation via long range coupling NMR spectra.
(11) Two unusual types of oral mucosal pigmentation are reported.
(12) These results are consistent with the idea that RPE pigment dispersion is triggered by a substance that diffuses from the retina at light onset.
(13) Rhabdomeres are substantially smaller and visual pigment is nearly eliminated when Drosophila are carotenoid-deprived from egg to adult.
(14) It is hypothesized that deposition of bilirubin in tissues takes place as an ongoing event, the deposited pigment being eliminated by bilirubin oxidase in healthy infants.
(15) The calculated separation between the centers of these two pigments (using an extended version of the exciton theory) is about 10 A, the pigments' molecular planes are tilted by about 20 degrees, and their N1-N3 axes are rotated by 150 degrees relative to each other.
(16) We have investigated enhancement of pigmentation in inbred C3H- mice using tail skin as a model for testing the effects of phosphorylated DOPA (DP) and ultraviolet radiation.
(17) Although mucocutaneous pigmentation was not present in two of the three patients, the features of intestinal polyposis are consistent with those of Peutz-Jeghers syndrome.
(18) Cytochromes b, c(555), possibly c(1), cytochrome oxidase, a carbon monoxide-binding pigment, and flavoproteins were detectable in the spectra of both intact cells and mitochondria.
(19) The addition of alcohol to the drinking-water resulted in the formation of stones rich in pigment.
(20) The total number of neuronal cell bodies was 25% lower in AIDS (P less than 0.01) than in 12 age-matched controls, although the volume density of neuronal melanin did not differ from that of controls because the percentage of pigmented cell bodies was higher (P less than 0.01) and the cell bodies were more fully packed with melanin in AIDS.