Definitions for vitamin k
vi·tamin k

Princeton's WordNetRate this definition:0.0 / 0 votes

1. vitamin K, naphthoquinone, antihemorrhagic factornoun

   a fat-soluble vitamin that helps in the clotting of blood

GCIDERate this definition:0.0 / 0 votes

1. vitamin Knoun

   either of two fat-soluble vitamins (vitamin K1 or vitamin K2) that help clot blood by participating in the fromation of prothrombin. naphthoquinone.

WiktionaryRate this definition:0.0 / 0 votes

1. vitamin Knoun

   Either of several related fat-soluble vitamins, found in leafy green vegetables, essential for blood clotting.

2. vitamin Knoun

   The drug ketamine.

WikipediaRate this definition:0.0 / 0 votes

1. Vitamin K

   Vitamin K is a family of structurally similar, fat-soluble vitamers found in foods and marketed as dietary supplements. The human body requires vitamin K for post-synthesis modification of certain proteins that are required for blood coagulation (K from Koagulation, German for "coagulation") or for controlling binding of calcium in bones and other tissues. The complete synthesis involves final modification of these so-called "Gla proteins" by the enzyme gamma-glutamyl carboxylase that uses vitamin K as a cofactor. Vitamin K is used in the liver as the intermediate VKH2 to deprotonate a glutamate residue and then is reprocessed into vitamin K through a vitamin K oxide intermediate. The presence of uncarboxylated proteins indicates a vitamin K deficiency. Carboxylation allows them to bind (chelate) calcium ions, which they cannot do otherwise. Without vitamin K, blood coagulation is seriously impaired, and uncontrolled bleeding occurs. Research suggests that deficiency of vitamin K may also weaken bones, potentially contributing to osteoporosis, and may promote calcification of arteries and other soft tissues.Chemically, the vitamin K family comprises 2-methyl-1,4-naphthoquinone (3-) derivatives. Vitamin K includes two natural vitamers: vitamin K1 (phylloquinone) and vitamin K2 (menaquinone). Vitamin K2, in turn, consists of a number of related chemical subtypes, with differing lengths of carbon side chains made of isoprenoid groups of atoms. The two most studied ones are menaquinone-4 (MK-4) and menaquinone-7 (MK-7). Vitamin K1 is made by plants, and is found in highest amounts in green leafy vegetables, because it is directly involved in photosynthesis. It is active as a vitamin in animals and performs the classic functions of vitamin K, including its activity in the production of blood-clotting proteins. Animals may also convert it to vitamin K2, variant MK-4. Bacteria in the gut flora can also convert K1 into MK-4. All forms of K2 other than MK-4 can only be produced by bacteria, which use these during anaerobic respiration. Vitamin K3 (menadione), a synthetic form of vitamin K, was used to treat vitamin K deficiency, but because it interferes with the function of glutathione, it is no longer used this way in human nutrition.

ChatGPTRate this definition:0.0 / 0 votes

1. vitamin K

   Vitamin K is a group of fat-soluble vitamins that the body requires for the synthesis of proteins necessary for blood coagulation and for the promotion of calcium binding in bones and other tissues. The two main types found in our diet are vitamin K1 (found mainly in green leafy vegetables) and vitamin K2 (present in fermented foods and produced by bacteria in the gut). It is essential for optimal health and its deficiency can lead to disorders like uncontrolled bleeding and bone weakness.

WikidataRate this definition:5.0 / 1 vote

1. Vitamin K

   Vitamin K is a group of structurally similar, fat-soluble vitamins that the human body needs for posttranslational modification of certain proteins required for blood coagulation, and in metabolic pathways in bone and other tissue. They are 2-methyl-1,4-naphthoquinone derivatives. This group of vitamins includes two natural vitamers: vitamin K1 and vitamin K2. Vitamin K1, also known as phylloquinone, phytomenadione, or phytonadione, is synthesized by plants, and is found in highest amounts in green leafy vegetables because it is directly involved in photosynthesis. It may be thought of as the "plant form" of vitamin K. It is active in animals and may perform the classic functions of vitamin K in animals, including its activity in the production of blood clotting proteins. Animals may also convert it to vitamin K2. Vitamin K2, the main storage form in animals, has several subtypes, which differ in isoprenoid chain length. These vitamin K2 homologs are called menaquinones, and are characterized by the number of isoprenoid residues in their side chains. Menaquinones are abbreviated MK-n, where M stands for menaquinone, the K stands for vitamin K, and the n represents the number of isoprenoid side chain residues. For example, menaquinone-4 has four isoprene residues in its side chain. Menaquinone-4 is the most common type of vitamin K2 in animal products since MK-4 is normally synthesized from vitamin K1 in certain animal tissues by replacement of the phytyl tail with an unsaturated geranylgeranyl tail containing four isoprene units, thus yielding menaquinone-4. This homolog of vitamin K2 may have enzyme functions that are distinct from those of vitamin K1.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Vitamin K

   A lipid cofactor that is required for normal blood clotting. Several forms of vitamin K have been identified: VITAMIN K 1 (phytomenadione) derived from plants, VITAMIN K 2 (menaquinone) from bacteria, and synthetic naphthoquinone provitamins, VITAMIN K 3 (menadione). Vitamin K 3 provitamins, after being alkylated in vivo, exhibit the antifibrinolytic activity of vitamin K. Green leafy vegetables, liver, cheese, butter, and egg yolk are good sources of vitamin K.

Matched Categories

1. • Fat-soluble Vitamin

How to pronounce vitamin k?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say vitamin k in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of vitamin k in Chaldean Numerology is: 6

2. Pythagorean Numerology

   The numerical value of vitamin k in Pythagorean Numerology is: 9

Examples of vitamin k in a Sentence

1. Alyssa Burnison:

   Beets contain the antioxidant betalains, which give red beetroots their natural, vibrant red color. Beetroots are also a great source of vitamin C, vitamin A, vitamin K, calcium and iron.

2. Jim White:

   Pumpkin seeds are high in vitamin A, vitamin B (including thiamin, riboflavin), vitamin C, vitamin K, niacin, calcium, iron, phosphorus, and protein, they are also high in magnesium, manganese, zinc, potassium, and copper.

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=vitamin k
2. ^ GCIDE
   https://gcide.gnu.org.ua/?q=vitamin k
3. ^ Wiktionary
   https://en.wiktionary.org/wiki/Vitamin_K
4. ^ Wikipedia
   https://en.wikipedia.org/wiki/Vitamin_K
5. ^ ChatGPT
   https://chat.openai.com
6. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=vitamin k