Details of Protein

General Information of Protein (ID: PRT00206)
Name Galactose mutarotase (GALM)
Synonyms   Click to Show/Hide Synonyms of This Protein
Aldose 1-epimerase; BLOCK25; GALM
Gene Name GALM Gene ID
130589
UniProt ID
Q96C23
Family Isomerases (EC 5)
EC Number   EC: 5.1.3.3  (Click to Show/Hide the Complete EC Tree)
Isomerase
Racemase/epimerase
Carbohydrate racemase/epimerase
EC: 5.1.3.3
  Click to Show/Hide the Molecular/Functional Data (Sequence/Structure/Function) of This Protein
Sequence
MASVTRAVFGELPSGGGTVEKFQLQSDLLRVDIISWGCTITALEVKDRQGRASDVVLGFA
ELEGYLQKQPYFGAVIGRVANRIAKGTFKVDGKEYHLAINKEPNSLHGGVRGFDKVLWTP
RVLSNGVQFSRISPDGEEGYPGELKVWVTYTLDGGELIVNYRAQASQATPVNLTNHSYFN
LAGQASPNINDHEVTIEADTYLPVDETLIPTGEVAPVQGTAFDLRKPVELGKHLQDFHLN
GFDHNFCLKGSKEKHFCARVHHAASGRVLEVYTTQPGVQFYTGNFLDGTLKGKNGAVYPK
HSGFCLETQNWPDAVNQPRFPPVLLRPGEEYDHTTWFKFSVA
Structure
1SNZ ; 1SO0
Function Mutarotase that catalyzes the interconversion of beta-D-galactose and alpha-D-galactose during galactose metabolism. Beta-D-galactose is metabolized in the liver into glucose 1-phosphate, the primary metabolic fuel, by the action of four enzymes that constitute the Leloir pathway: GALM, GALK1 (galactokinase), GALT (galactose-1-phosphate uridylyltransferase) and GALE (UDP-galactose-4'-epimerase). Involved in the maintenance of the equilibrium between the beta- and alpha-anomers of galactose, therefore ensuring a sufficient supply of the alpha-anomer for GALK1. Also active on D-glucose although shows a preference for galactose over glucose.
Regulatory Network
Full List of Metabolite(s) Regulating This Protein
      Organic acids and derivatives
            Glutamine Click to Show/Hide the Full List of Regulating Pair(s):   1 Pair(s)
               Detailed Information Metabo  Info click to show the details of this metabolite
               Regulating Pair Experim Info click to show the details of experiment for validating this pair [1]
                      Introduced Variation Glutamine absence (16 hours)
                      Induced Change GALM protein abundance levels: increase (FC = 1.66)
                      Summary Introduced Variation         Induced Change 
                      Disease Status Hepatocellular carcinoma [ICD-11: 2C12]
                      Details It is reported that glutamine absence causes the increase of GALM protein abundance compared with control group.
References
1 Quantitative proteomics analysis reveals glutamine deprivation activates fatty acid -oxidation pathway in HepG2 cells. Amino Acids. 2016 May;48(5):1297-307.

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