prolamin


prolamin
/proh lam"in, proh"leuh min/, n. Biochem.
any of the class of simple proteins, as gliadin, hordein, or zein, found in grains, soluble in dilute acids, alkalis, and alcohols, and insoluble in water, neutral salt solutions, and absolute alcohol.
Also, prolamine /proh lam"in, -een, proh"leuh min, -meen'/.
[1905-10; PROL(INE) + AM(MONIA) + -IN2]

* * *

      any of certain seed proteins known as globulins that are insoluble in water but soluble in water-ethanol mixtures. Prolamins contain large amounts of the amino acids proline and glutamine (from which the name prolamin is derived) but only small amounts of arginine, lysine, and histidine. Gliadin from wheat contains 14 percent by weight of proline, 45 percent of glutamine, and very little lysine. Hordein is the prolamin from barley; zein is that from corn.

      The term glutelin is used for seed globulins that are insoluble in water but soluble in acidified or alkaline solutions. Both prolamins and glutelins are mixtures of several similar proteins.

* * *


Universalium. 2010.

Look at other dictionaries:

  • prolamin — or prolamine noun Etymology: International Scientific Vocabulary proline + ammonia + 1 in, 2 ine Date: 1908 any of various simple proteins (as zein) that are found especially in grass seeds and are soluble in alcohol …   New Collegiate Dictionary

  • Prolamin — Prolamins are a group of plant storage proteins having a high proline content and found in the seeds of cereal grains: wheat (gliadin), barley (hordein), rye (secalin), corn (zein) and as a minor protein, avenin in oats. They are characterised by …   Wikipedia

  • prolamin — noun Any of a group of plant storage proteins, that have a high proline content, found in cereals …   Wiktionary

  • Prolamin — Pro|la|min 〈n. 11; meist Pl.; Biol.〉 Protein, das bes. in Getreidesamen vorkommt [nach den Bestandteilen Prolin + Glutaminsäure] * * * Pro|l|a|min [Kunstw. aus Prolin u. Glutamin (säure)], das, s, e: Sammelbez. für die Reserveproteine aus… …   Universal-Lexikon

  • prolamin — pro·la·min or pro·la·mine prō lə mən, .mēn n any of various simple proteins that are found esp. in seeds and are insoluble in dehydrated alcohol or water * * * pro·lam·in (pro lamґin) (proґlə min) any of a group of globular proteins found… …   Medical dictionary

  • Prolamin — Pro|la|min 〈n.; Gen.: s, Pl.: e; meist Pl.; Biol.〉 Protein, das bes. in Getreidesamen vorkommt [Etym.: nach den Bestandteilen Prolin + Glutaminsäure] …   Lexikalische Deutsches Wörterbuch

  • Prolamin — Pro|la|min* das; s, e (meist Plur.) Kunstw.> Eiweiß des Getreidekornes …   Das große Fremdwörterbuch

  • prolamin — n. type of simple protein found in grain (Biochemistry) …   English contemporary dictionary

  • prolamin — pro·lam·in …   English syllables

  • prolamin — pro•lam•in [[t]proʊˈlæm ɪn, ˈproʊ lə mɪn[/t]] n. biochem. any of a class of simple proteins, as gliadin, that are insoluble in water but soluble in dilute acids, alkalis, and alcohols • Etymology: 1905–10; prol ( ine) +am (monia) + in I …   From formal English to slang


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.