翻訳と辞書
Words near each other
・ Galactinol—raffinose galactosyltransferase
・ Galactinol—sucrose galactosyltransferase
・ Galactites
・ Galactites tomentosa
・ Galactitol
・ Galactitol 2-dehydrogenase
・ Galactitol-1-phosphate 5-dehydrogenase
・ Galactocele
・ Galactocentric distance
・ Galactocentrism
・ Galactocerebroside
・ Galactofuranosylgalactofuranosylrhamnosyl-N-acetylglucosaminyl-diphospho-decaprenol beta-1,5/1,6-galactofuranosyltransferase
・ Galactogen 6beta-galactosyltransferase
・ Galactoglucomannan
・ Galactography
Galactokinase
・ Galactokinase deficiency
・ Galactolipase
・ Galactolipid
・ Galactolipid galactosyltransferase
・ Galactolipid O-acyltransferase
・ Galactolysis
・ Galactomannan
・ Galactomyces
・ Galactomyces candidum
・ Galactomyia
・ Galactonate dehydratase
・ Galactonolactone dehydrogenase
・ Galactooligosaccharide
・ Galactophora


Dictionary Lists
翻訳と辞書 辞書検索 [ 開発暫定版 ]
スポンサード リンク

Galactokinase : ウィキペディア英語版
Galactokinase

Galactokinase is an enzyme (phosphotransferase) that facilitates the phosphorylation of α-D-galactose to galactose 1-phosphate at the expense of one molecule of ATP.〔(【引用サイトリンク】title=galactokinase )〕 Galactokinase catalyzes the second step of the Leloir pathway, a metabolic pathway found in most organisms for the catabolism of β-D-galactose to glucose 1-phosphate.〔 First isolated from mammalian liver, galactokinase has been studied extensively in yeast,〔〔 archaea, plants, and humans.〔
==Structure==

Galactokinase is composed of two domains separated by a large cleft. The two regions are known as the N- and C-terminal domains, and the adenine ring of ATP binds in a hydrophobic pocket located at their interface. The N-terminal domain is marked by five strands of mixed beta-sheet and five alpha-helices, and the C-terminal domain is characterized by two layers of anti-parallel beta-sheets and six alpha-helices.〔 Galactokinase does not belong to the sugar kinase family, but rather to a class of ATP-dependent enzymes known as the GHMP superfamily. GHMP is an abbreviation referring to its original members: galactokinase, homoserine kinase, mevalonate kinase, and phosphomevalonate kinase. Members of the GHMP superfamily have great three-dimensional similarity despite only ten to 20% sequence identity. These enzymes contain three well-conserved motifs (I, II, and III), the second of which is involved in nucleotide binding and has the sequence Pro-X-X-X-Gly-Leu-X-Ser-Ser-Ala.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Galactokinase」の詳細全文を読む



スポンサード リンク
翻訳と辞書 : 翻訳のためのインターネットリソース

Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.