Protein carotenoids. Medical search. Frequent questions

Orange carotenoid protein (OCP) is a water-soluble protein which plays a role in photoprotection in diverse cyanobacteria. (wikipedia.org)
The photoactive Orange Carotenoid Protein (OCP) photoprotects cyanobacteria cells by quenching singlet oxygen and excess excitation energy. (nih.gov)

Beta carotene, also known as provitamin A, is the plant source of retinol from which mammals make two-thirds of their vitamin A. Carotenoids, the largest group of the 3, contain multiple conjugated double bonds and exist in a free alcohol or in a fatty acyl-ester form. (medscape.com)
Goji berries are one of the richest source of carotenoids with twice as much beta carotene as carrots. (upayanaturals.com)
Beta-carotene and other provitamin carotenoids, contained in green leafy and yellow vegetables, carrots, and deep- or bright-colored fruits, are converted to vitamin A . Carotenoids are absorbed better from vegetables when they are cooked or homogenized and served with some fat (eg, oils). (msdmanuals.com)

Lutein, β -carotene, and zeaxanthin were the identified carotenoids. (scirp.org)
The purpose of the current study was to further explore the effects of phosphatidylcholine (PC) provided by eggs versus a choline bitartrate (CB) supplement on the gut microbiota, trimethylamine N-oxide (TMAO) formation, and plasma carotenoids lutein and zeaxanthin in MetS. (mdpi.com)
Total carotenoid intake and Lutein/Zeaxanthin intake were not associated with CRC risk. (frontiersin.org)
Just 28 grams of goji berries provides 140% RDA of Vitamin A, and as much as 77% of that can be zeaxanthin, a particularly important carotenoid for eyesight health and longevity.Increasing zeaxanthin and lutein may help to decrease the risk of age-related macular degeneration, the leading cause of blindness after 65. (upayanaturals.com)
In the case of LHCII , the main collecting antenna of higher plants, in vitro spectroscopy experiments conducted on the aggregated complex (in the absence of the detergent conventionally used to solubilise it) establish that this transfer occurs between chlorophyll a and a lutein (a carotenoid). (cea.fr)
Their study, published in JBC, shows that, in this state, all the changes associated with non-photochemical quenching (changes in protein-chlorophyll interactions, neoxanthin torsion) are present except for lutein torsion , while no quenching is associated with this state . (cea.fr)
We conclude that non-photochemical quenching is catalysed by two independent mechanisms, with the fastest activated response catalysed within monomeric LHC proteins depending on both zeaxanthin and lutein and on the formation of a radical cation. (lu.se)

Carotenoids are also precursors of bioactive metabolites called apocarotenoids, including vitamin A and the phytohormones abscisic acid (ABA) and strigolactones (SLs). (frontiersin.org)

Carotenoids are well-known isoprenoid pigments naturally produced by plants, algae, photosynthetic bacteria as well as by several heterotrophic microorganisms. (frontiersin.org)
In plants, the pigments involved in photosynthesis are green chlorophylls and carotenoids. (elifesciences.org)
Carotenoids form a large class of natural pigments responsible for the yellow, orange, and red colors of fruits and leaves ( Stange, 2016 ). (elifesciences.org)
Photosynthesis begins with the absorption of light energy by the chlorophyll pigments of the light-harvesting antennae ( Light Harvesting Complexes - LHC - composed of proteins and chlorophyll and carotenoid pigments). (cea.fr)
Whether in vivo or in vitro , the Laboratory of Bioenergetics, Metalloproteins and Stress ( I2BC department), led by Bruno Robert, has shown that this quenching is linked to a rearrangement of the proteins and pigments that build the LHC, which creates energy traps . (cea.fr)
Excited chlorophyll pigments transfer their energy to carotenoid pigments, which immediately dissipate it as heat. (cea.fr)
Its hue comes in part from its content of plant pigments, including antioxidant carotenoids. (drweil.com)
The flamingos' feathers, legs, and face are colored by their diet, which is rich in alpha and beta carotenoid pigments. (webexhibits.org)
After being digested, the carotenoid pigments dissolve in fats and are deposited in the growing feathers, becoming orange or pink. (webexhibits.org)
The light harvesting complex is composed of trimeric and monomeric antenna proteins containing Chlorophyll a and b pigments and Carotenoids. (unine.ch)

Many have been found to inhibit cancer development but this inhibition is reversible, meaning that stopping a diet rich in carotenoids may allow the cancer to grow again. (canceractive.com)

Astaxanthin is a reddish pigment that belongs to a group called carotenoids. (springtimeinc.com)
Surprisingly, both photosystems are fully functional despite their carotenoid-binding sites being occupied by astaxanthin instead of β-carotene or remaining empty (i.e. are not occupied by carotenoids). (elifesciences.org)
Astaxanthin is a carotenoid from salmon and shrimp, not normally found in plants. (elifesciences.org)
A synthetic "nature-identical" version of the carotenoid astaxanthin has been developed, and it is also possible (but expensive) to obtain commercial quantities of the natural color from cultured yeast and algae. (webexhibits.org)

Cyanobacterial phycobilisome (PBS) pigment-protein complexes harvest light and transfer the energy to reaction centers. (osti.gov)
Carotenoids are essential in oxygenic photosynthesis: they stabilize the pigment-protein complexes, are active in harvesting sunlight and in photoprotection. (elifesciences.org)
In the photosynthetic membranes, they are mainly associated with proteins, forming pigment-protein complexes. (elifesciences.org)
LH2 complexes contain carotenoid (Car) and Bchl molecules. (gla.ac.uk)

Fruits and vegetables are among the daily foods required for good health since they include high levels of minerals, vitamins, carbs, proteins, dietary fiber, and different substances with nutritional medicinal value that can help prevent a variety of ailments ( 7 ). (frontiersin.org)
Healthy Origins Parry Organic Spirulina naturally contains over 60% protein and is a great source of many phytonutrients and minerals such as carotenoids, essential fatty acids, iron, magnesium, calcium and selenium. (giftespot.com)
A healthy diet is one which is balanced and full of carbohydrates, minerals, proteins, and lots of micronutrients, based on the body constitution of the person. (planetayurveda.com)
These also contain vitamins, carotenoids, and various minerals. (planetayurveda.com)
These possess lots of health benefits due to the presence of a good amount of vitamins, essential minerals, and proteins. (planetayurveda.com)

Dietary vitamin A is also obtained from provitamin A carotenoids from plant sources, principally carrots. (medscape.com)
Dietary vitamin A is available mainly as preformed vitamin A in western countries and as provitamin A carotenoids in developing countries. (medscape.com)
Because the body can make use of both preformed vitamin A and provitamin A carotenoids that it converts into vitamin A (retinol), and these substances have different bioactivity levels, the recommended dietary allowances (RDAs) for vitamin A are given as mcg of retinol activity equivalents (RAE). (medscape.com)

There are over one thousand different carotenoids in living beings, but only one, β-carotene, is present in every organism that performs the type of photosynthesis in which oxygen is released, and is thought to be essential for the process. (elifesciences.org)
also show that the photosystems can adapt to using different carotenoids, and can even operate with a reduced number of them. (elifesciences.org)

However, this could never be proved because it is impossible to remove β-carotene from cells using typical genetic approaches without affecting all other carotenoids. (elifesciences.org)
These plants are the first living things known to perform photosynthesis without β-carotene and demonstrate that this pigment is not essential for photosynthesis as long as other carotenoids are present. (elifesciences.org)

With the increased global demand for proteins, as well as functional food ingredients, the interest in red algae is expected to increase. (scirp.org)
Some types of red algae, especially the genus Porphyra , are rich in protein, fiber, and omega-3 fatty acids. (drweil.com)

Goji berries, with their deep rich, red color, are a potent source of carotenoids, the antioxidants we associate most with carrots. (upayanaturals.com)
The old folk wisdom about eyesight and carrots is well-founded, as carotenoids have been demonstrated to assist in protecting the retina from the oxidative damage of ultra violet light and aging. (upayanaturals.com)

The first steps of photosynthesis, the capture and conversion of sunlight into chemical energy, happen in large assemblies of proteins containing many pigment molecules called photosystems. (elifesciences.org)
However, the primary role of carotenoids in photosynthesis is photoprotection. (elifesciences.org)

At the same time the protein was shown to be an effective quencher of singlet oxygen and was suggested to be involved in photoprotection, or carotenoid transport. (wikipedia.org)

Plastid lipid-associated proteins (PAPs) and Carotenoid Associated Proteins (CAP) are general terms conferred to two classes of proteins accumulated at high levels in chromoplasts of plant cells [ 1 , 2 ] that are involved in the sequestration of hydrophobic compounds including lipids and carotenoids. (openbiochemistryjournal.com)

Fundamental aspects of carotenoid absorption are largely unknown, such as luminal and intracellular factors related to uptake and transport of carotenoid. (confex.com)
Immunocytochemistry also verified the localization of CBP in the villi of the midgut epithelial cells, indicating that CBP might be involved in absorption of carotenoid. (confex.com)
Retinol-binding protein (RBP) binds vitamin A and regulates its absorption and metabolism. (medscape.com)
However, carotenoids are chemically unstable and easily degradable under environmental conditions -such as high temperature, oxygen, light, and pH-during food processing, storage, and gastrointestinal digestion, making them less accessible and available for absorption in the body. (nutraingredients.com)
After absorption, retinol is transported via chylomicrons to the liver, where it is either stored as retinol ester or reexported into the plasma in combination with retinol-binding protein for delivery to tissue sites. (medscape.com)
To measure these biochemical indicators in blood or urine, CDC's Environmental Health Laboratory (Division of Laboratory Sciences, National Center for Environmental Health) used a variety of analytical methods: isotope dilution tandem mass spectrometry, gas chromatography coupled to mass spectrometry, inductively coupled plasma mass spectrometry, atomic absorption spectroscopy, high performance liquid chromatography with different detection modes such as UV-visible and fluorescence, and various immuno-, protein binding, and colorimetric assays. (cdc.gov)
Diets high in saturated fats and Examination Surveys (NHANES) and essential fatty acids from the diet, dietary cholesterol tend to raise blood provide information on the health and and aid in the absorption and transport cholesterol levels and increase a nutritional status of the civilian, of fat-soluble vitamins and carotenoids. (cdc.gov)

Both salmon farmers and zookeepers rely on doses of a carotenoid, such as canthaxanthin or a similar pigment, to keep fish and flamingos colorful. (webexhibits.org)

It provides vitamin C and carotenoids with antioxidant properties, but also its organic acids increase the antioxidant power of the other components present in this food (malic, tartaric and citric acids are synergistic antioxidants). (botanical-online.com)
Researchers attribute these effects to plant antioxidants and nutrients like carotenoids , folate, polyphenols, and vitamin C. (naturalnews.com)
It is a unique product that contains over 100 essential nutrients, antioxidants, 60 percent protein, and high levels of carotenoids that researchers say promote memory, cognitive functions, and brain health. (consumerhealthdigest.com)
This supplement supply the body with over 100 essential nutrients, antioxidants, 60 percent protein and high levels of carotenoids that researchers say promote memory, cognitive functions, and brain health. (consumerhealthdigest.com)

As first shown in 2003, the auxiliary function of carotenoids as quenchers of singlet oxygen contributes to the photoprotective role of OCP has also been demonstrated under strong orange-red light, which are conditions where OCP cannot be photoactivated for its energy-quenching role. (wikipedia.org)

Normally, the liver stores 80 to 90% of the body's vitamin A . To use vitamin A , the body releases it into the circulation bound to prealbumin (transthyretin) and retinol-binding protein. (msdmanuals.com)

Interestingly, manipulation of carotenoid biosynthesis can also influence plant architecture, and positively impact growth and yield, making it an important target for crop improvements beyond biofortification. (frontiersin.org)
Here, we briefly describe carotenoid biosynthesis and highlight the latest advances and discoveries related to synthetic carotenoid metabolism in plants and microorganisms. (frontiersin.org)
A Tetratricopeptide Repeat Protein Regulates Carotenoid Biosynthesis and Chromoplast Development in Monkeyflowers ( Mimulus ). (bvsalud.org)

Lycopene, a carotenoid, has been shown to possess both antioxidative and anti-inflammatory properties. (nih.gov)
Lycopene is a type of organic pigment called a carotenoid. (medlineplus.gov)

Loaded with antioxidant carotenoids: food for the eyes! (upayanaturals.com)

Consequently, the condensation of two GGPP molecules produces the first carotenoid, the colorless 15- cis -phytoene ( Figure 1 ). (frontiersin.org)
The authors report that chitosan-based nanocarriers are also effective in enhancing the stability and bioavailability of poorly soluble bioactive molecules compared to lipid- or protein-based nanocarriers. (nutraingredients.com)
Carotenoids in crustaceans such as those in the flamingo diet are frequently linked to protein molecules, and may be blue or green. (webexhibits.org)

The temperature dependence of the rate of fluorescence quenching is similar to that of soluble protein folding, supporting the hypothesis that OCPO slightly unfolds when it converts to OCPR. (wikipedia.org)
Recently, the characteristics of a family of soluble carotenoid-binding proteins (Helical Carotenoid Proteins [HCPs]), paralogs of the N-terminal domain of OCP, were described. (nih.gov)

This month's survey of recent patent and literature research describes money-making ideas in the personal care industry, ranging from oligopeptides for sensory properties and peptides for hair, to a dandruff treatment and colorless carotenoids for sun damage protection. (cosmeticsandtoiletries.com)

effect of drying technique and protein type on the bioaccessibility of carotenoids, chlorophylls, and phenolics. (uams.edu)

According to Rakhimberdieva and coworkers, about 30-40% of the energy absorbed by phycobilisomes does not reach the reaction centers when the carotenoid-induced NPQ is active. (wikipedia.org)

In the Y or I gene, the transport of the other lipids, except carotenoid, is normal. (confex.com)

Moreover, transient gene expression through viral vectors allowed the accumulation of carotenoids outside the plastid. (frontiersin.org)
Carotenoids are formed from isopentenyl diphosphate (IPP, C 5 ) and its isomer dimethylallyl diphosphate (DMAPP, C 5 ), both derived from the plastid methylerythritol (MEP) pathway ( Ruiz-Sola and Rodríguez-Concepción, 2012 ). (frontiersin.org)

The protein consists of two domains, with a single keto-carotenoid molecule non-covalently bound between the two domains. (wikipedia.org)
When synthesized in Escherichia coli or Synechocystis PCC 6803, CTDHs formed dimers that share a carotenoid molecule and are able to transfer their carotenoid to apo-HCPs and apo-OCP. (nih.gov)

Vitamin B-6 functions in protein and amino acid metabolism. (medscape.com)

It is the only photoactive protein known to use a carotenoid as the photoresponsive chromophore. (wikipedia.org)

This protein is not found in chloroplasts, and appears to be specific to cyanobacteria. (wikipedia.org)
We propose that, in cyanobacteria, the CTDHs are carotenoid donors to HCPs. (nih.gov)

Both trimeric light-harvesting complex II (LHCII) and monomeric LHC proteins have been indicated as site(s) of the heat-dissipative reactions. (lu.se)
Here, we report on the construction of a mutant lacking all monomeric LHC proteins but retaining LHCII trimers. (lu.se)

Carotenoids also occur in mollusks and crustaceans, so flamingos may be fed shrimp and clams. (webexhibits.org)

Soil Virus Offers Insight into Maintaining Microorganisms Through a collaborative effort, researchers have identified a protein in soil viruses that may promote soil health. (doe.gov)
Furthermore, the utilization of engineered microorganisms allowed efficient mass production of carotenoids, making it convenient for industrial practices. (frontiersin.org)

In humans, carotenoids offer numerous health benefits , such as protecting against oxidative stress, enhancing vision, guarding against UV radiation, and potentially preventing diseases. (nutraingredients.com)

Across different species, individuals showing brighter carotenoid-based signals have been found to have superior foraging abilities, to recover faster from diseases and, in general, to enjoy a better body condition. (researchgate.net)

It contains fats and proteins in smaller proportions. (botanical-online.com)

High-quality proteins and essential amino acids from aquatic animals ensure balanced growth, and dietary fiber from various leaves and bark supports healthy digestion. (liveaquaria.com)
18 amino acids, including all 8 essential amino acids for complete protein. (upayanaturals.com)

It contains all the healthy nutrients like carbohydrates, proteins, etc. (planetayurveda.com)
With a potent combination of protein and super-nutrients (and a long history as a traditional Chinese longevity food) it s no wonder these tasty little morsels have become the world s most popular super berry. (upayanaturals.com)
They provide an economical source of high-quality protein and other beneficial nutrients, including some not originally part of the package. (naturalproductsinsider.com)

Carambola mainly provides a few carbohydrates, fiber, vitamin C and carotenoids. (botanical-online.com)

Carotenoids are natural compounds found in various organisms and plants but not produced by the human body. (nutraingredients.com)

A diet rich in carotenoids can help return the situation to normal, especially when combined with selenium a constituent mineral of C43 found in brown rice, fish and Brazil nuts. (canceractive.com)

In addition, recent studies revealed the option of synthetic conversion of leaf chloroplasts into chromoplasts, thus increasing carotenoid storage capacity and boosting the nutritional value of green plant tissues. (frontiersin.org)

One cup of raw blackberries contains nearly 2g of protein, while packing almost 8g in fiber and providing less than 7g of sugar. (livescience.com)
Here is a high fiber, vegan recipe with pine nuts and garbanzo beans as the lead protein sources. (ucsf.edu)

This suggests that the transfer of the carotenoid could be redox regulated in clade 2 CTDH. (nih.gov)
The intrusion of lead into the lens may alter lens redox status and cause protein conformational changes that decrease lens transparency. (cdc.gov)

Experiments with birds have also shown that carotenoid supplementation can enhance flight performance, allowing birds to take off faster from the ground. (researchgate.net)

Colorectal cancer (CRC) risk is linked to serum and dietary retinol and carotenoids, according to clinical and epidemiological research. (frontiersin.org)
Serum carotenoid concentrations were significantly inversely associated with CRC risk. (frontiersin.org)

The authors suggest that as carotenoids offer various health benefits, but their poor solubility and stability present challenges, chitosan-based delivery systems such as nanoemulsions, liposomes, polysaccharide nanoparticles, and nanogels could ensure better carotenoid availability and retention of nutritional value. (nutraingredients.com)
They add that as these delivery systems show results in enhancing the retention of carotenoids' nutritional value, advancement in these systems could lead to the development of healthier and more effective dietary supplements. (nutraingredients.com)

We also demonstrate here that apo-OCPs and apo-CTDHs are able to take the carotenoid directly from membranes, while HCPs are unable to do so. (nih.gov)

The nutraceutical sector is seeing the expansion of functional foods enriched with carotenoids, with estimations that the carotenoid market could reach almost USD 1.9 billion in 2027. (nutraingredients.com)

OCPO is considered the dark, stable form of the protein, and does not contribute to phycobilisome quenching. (wikipedia.org)
The exact mechanism and quenching site in both the carotenoid as well as the phycobilisome still remain uncertain. (wikipedia.org)

Looking for ways to increase your protein intake? (livescience.com)
Further adjustment for pack-years of cigarette smoking, diabetes, blood lead levels, and intake of vitamin C, vitamin E, and carotenoids resulted in an OR of 3.19 (95% CI, 1.48-6.90). (cdc.gov)

Carotenoids have been found to have strong epigenetic benefits and are strong constituents of the Rainbow Diet. (canceractive.com)
But if you want to achieve your fitness goals with more ease, here are seven fruits that are high in protein to include in your diet. (livescience.com)
To preserve their rosy color at the zoo, flamingos are fed a commercially prepared diet high in carotenoids. (webexhibits.org)
In zoos, flamingos need a diet rich in carotenoids to maintain their distinctive plumage. (webexhibits.org)

One way that carotenoids inhibit cancer growth is related to their ability to improve intercellular communication by increasing the production of a protein (connexion 43, C43) which sits between cells. (canceractive.com)
Cancer cells lack the C43 protein, which means they also lack a vital growth control system. (canceractive.com)
Oxidative stress causes damage to the cells, proteins, and DNA in your body. (springtimeinc.com)
Almost two-thirds of the iron in the body (approximately 2.5 grams of iron) is found in hemoglobin, the protein in red blood cells that carries oxygen to tissues. (cdc.gov)

Anatomy6

Organisms9

Chemicals and Drugs26

Analytical, Diagnostic and Therapeutic Techniques and Equipment4

Phenomena and Processes7

Technology, Industry, Agriculture6

Orange carotenoid protein2

Beta-Carotene3

Lutein7

Including vitamin1

Pigments10

Stopping a diet rich in caroteno1

Astaxanthin4

Complexes4

Minerals5

Provitamin A carotenoids3

Different carotenoids2

Carotene2

Algae2

Carrots2

Photosynthesis2

Photoprotection1

Hydrophobic compounds1

Absorption7

Canthaxanthin1

Antioxidants4

Singlet1

Retinol-binding1

Biosynthesis3

Lycopene2

Antioxidant1

Molecules3

Soluble2

Peptides1

Chlorophylls1

Reaction centers1

Lipids1

Plastid2

Molecule2

Metabolism1

Photoactive1

Cyanobacteria2

LHCII2

Shrimp1

Microorganisms2

Humans1

Species1

Fats1

Amino2

Nutrients3

Carbohydrates1

Compounds1

Selenium1

Chromoplasts1

Fiber2

Redox2

Supplementation1

Serum2

Nutritional2

Membranes1

Functional1

Phycobilisome2

Intake2

Diet4

Cells4