2.4.1.22: lactose synthase
This is an abbreviated version!
For detailed information about lactose synthase, go to the full flat file.
Word Map on EC 2.4.1.22
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2.4.1.22
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milk
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beta-lactoglobulin
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whey
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casein
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lysozyme
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globule
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molten
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beta-casein
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oligosaccharide
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lactoferrin
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prolactin
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goat
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n-acetylglucosamine
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infant
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dairy
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immunoglobulin
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n-glycans
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galactosylation
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sialylated
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kappa-caseins
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ovalbumin
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alpha-casein
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bsa
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beta-lg
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native-like
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allergy
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glycosyltransferases
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ca2+-binding
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refolding
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complex-type
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lactoperoxidase
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wallaby
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intramammary
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macropus
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beta-domain
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udder
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apomyoglobin
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cheese
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breast-fed
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virgin
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globule-like
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n-acetyllactosamine
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formula-fed
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alpha-crystallin
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skim
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fucosylated
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egg-white
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lactogen
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colostrum
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glycoconjugates
- 2.4.1.22
- milk
- beta-lactoglobulin
- whey
- casein
- lysozyme
-
globule
-
molten
- beta-casein
- oligosaccharide
- lactoferrin
- prolactin
- goat
- n-acetylglucosamine
- infant
-
dairy
- immunoglobulin
- n-glycans
-
galactosylation
-
sialylated
- kappa-caseins
- ovalbumin
- alpha-casein
- bsa
-
beta-lg
-
native-like
- allergy
- glycosyltransferases
-
ca2+-binding
-
refolding
-
complex-type
- lactoperoxidase
- wallaby
-
intramammary
- macropus
-
beta-domain
-
udder
- apomyoglobin
-
cheese
-
breast-fed
-
virgin
-
globule-like
- n-acetyllactosamine
-
formula-fed
- alpha-crystallin
-
skim
-
fucosylated
-
egg-white
-
lactogen
- colostrum
- glycoconjugates
Reaction
Synonyms
alpha-lactalbumin, B4GALT1, beta-1,4-galactosyltransferase, beta-1,4-galactosyltransferase 1, beta-GalT, beta1,4-galactosyltransferase, beta1,4-galactosyltransferase-1, beta1,4-galactosyltransferase1, beta4Gal-T1, c-LacdiNAcS, Gal-T1, GalNAc(beta1-4)GlcNAc synthase, GALT, glactosyltransferase, uridine diphosphogalactose-glucose, GT, HP0826, lacdiNAc, LACS, lactose synthase, lactose synthetase, LALBA, LALBA1, LgtB, More, N-acetyllactosamine synthase, UDP-galactose-glucose galactosyltransferase, UDPgalactose-glucose galactosyltransferase, UGT72B1
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Subunits
Subunits on EC 2.4.1.22 - lactose synthase
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dimer
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1 * 14500, alpha-lactalbumin, + 1 * 46000, galactosyl transferase, equilibrium sedimentation
additional information
additional information
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the three main polypeptides determined by SDS-PAGE of galactosyl transferase are active: 54000 Da, 48000 Da and 42000 Da
additional information
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MW of lactalbumin determined by nucleotide sequence MW of lactalbumin determined by nucleotide sequence: 14179 Da
additional information
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MW of lactalbumin determined by nucleotide sequence: guinea pig
additional information
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MW of lactalbumin determined by nucleotide sequence MW of lactalbumin determined by nucleotide sequence: 14071 Da
additional information
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galactosyl transferase component has a MW of 49000 Da, SDS-PAGE
additional information
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the enzyme is composed of two structurally and functionally dissimilar proteins: 1. UDP-galactose:N-acetylglucosamine-beta4-galactosyl transferase, EC 2.4.1.90. Its normal function is to catalyze the incorporation of galactose into 1,4-linkage with N-acetylglucosamine during the synthesis of oliogosaccharide prosthetic groups of certain glycoproteins, free N-acetylglucosamine also serves as an excellent acceptor for galactose leading to the formation of N-acetylgalactosamine, 2. alpha-lactalbumin, interaction of alpha-lactalbumin with the transferase leads to lactose synthesis when UDP-galactose and glucose are present
additional information
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the enzyme is 1.1 complex of a catalytic component beta1,4-galactosyltransferase (beta4gal-T1) and a regulatory component, alpha-lactalbumin