General Information of Protein (ID: PRT00821)
Name Ceramide glucosyltransferase (UGCG)
Synonyms   Click to Show/Hide Synonyms of This Protein
GLCT-1; Glucosylceramide synthase; GCS; UDP-glucose ceramide glucosyltransferase; UDP-glucose:N-acylsphingosine D-glucosyltransferase; Ugcg
Gene Name Ugcg Gene ID
22234
UniProt ID
O88693
Family Transferases (EC 2)
EC Number   EC: 2.4.1.80  (Click to Show/Hide the Complete EC Tree)
Transferase
Glycosyltransferase
Hexosyltransferase
EC: 2.4.1.80
  Click to Show/Hide the Molecular/Functional Data (Sequence/Structure/Function) of This Protein
Sequence
MALLDLAQEGMALFGFVLFVVLWLMHFMSIIYTRLHLNKKATDKQPYSKLPGVSLLKPLK
GVDPNLINNLETFFELDYPKYEVLLCVQDHDDPAIDVCKKLLGKYPNVDARLFIGGKKVG
INPKINNLMPAYEVAKYDLIWICDSGIRVIPDTLTDMVNQMTEKVGLVHGLPYVADRQGF
AATLEQVYFGTSHPRSYISANVTGFKCVTGMSCLMRKDVLDQAGGLIAFAQYIAEDYFMA
KAIADRGWRFSMSTQVAMQNSGSYSISQFQSRMIRWTKLRINMLPATIICEPISECFVAS
LIIGWAAHHVFRWDIMVFFMCHCLAWFIFDYIQLRGVQGGTLCFSKLDYAVAWFIRESMT
IYIFLSALWDPTISWRTGRYRLRCGGTAEEILDV
Function Catalyzes at the cytosolic surface of the Golgi, the initial step of the glucosylceramide-based glycosphingolipid/GSL synthetic pathway, the transfer of glucose from UDP-glucose to ceramide to produce glucosylceramide/GlcCer. Glucosylceramide is the core component of glycosphingolipids/GSLs, amphipathic molecules consisting of a ceramide lipid moiety embedded in the outer leaflet of the membrane, linked to one of hundreds of different externally oriented oligosaccharide structures. Glycosphingolipids are essential components of membrane microdomains that mediate membrane trafficking and signal transduction. They are implicated in many fundamental cellular processes, including growth, differentiation, migration, morphogenesis, cell-to-cell and cell-to-matrix interactions. They are required for instance in the proper development and functioning of the nervous system. As an example of their role in signal transduction, they regulate the leptin receptor/LEPR in the leptin-mediated signaling pathway. They also play an important role in the establishment of the skin barrier regulating keratinocyte differentiation and the proper assembly of the cornified envelope. The biosynthesis of GSLs is also required for the proper intestinal endocytic uptake of nutritional lipids.
Regulatory Network
Full List of Metabolite(s) Regulated by This Protein
      Lipid-related molecules
            LacCer(d18:1/12:0) 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 Knockdown (shRNA) of Ugcg
                      Induced Change LacCer(d18:1/12:0) concentration: decrease
                      Summary Introduced Variation         Induced Change 
                      Disease Status Healthy individual
                      Details It is reported that knockdown of Ugcg leads to the decrease of LacCer(d18:1/12:0) levels compared with control group.
      Lipids and lipid-like molecules
            Ceramide(d20:1/18:0) Click to Show/Hide the Full List of Regulating Pair(s):   2 Pair(s)
               Detailed Information Metabo  Info click to show the details of this metabolite
               Regulating Pair (1) Experim Info click to show the details of experiment for validating this pair [1]
                      Introduced Variation Knockdown (shRNA) of Ugcg
                      Induced Change Ceramide(d20:1/18:0) concentration: increase
                      Summary Introduced Variation         Induced Change 
                      Disease Status Healthy individual
                      Details It is reported that knockdown of Ugcg leads to the increase of ceramide(d20:1/18:0) levels compared with control group.
               Regulating Pair (2) Experim Info click to show the details of experiment for validating this pair [1]
                      Introduced Variation Inhibition (AMP-DNM) of Ugcg
                      Induced Change Ceramide(d20:1/18:0) concentration: increase
                      Summary Introduced Variation         Induced Change 
                      Disease Status Healthy individual
                      Details It is reported that inhibition of Ugcg leads to the increase of ceramide(d20:1/18:0) levels compared with control group.
            GlcCer(d18:1/22:0) Click to Show/Hide the Full List of Regulating Pair(s):   2 Pair(s)
               Detailed Information Metabo  Info click to show the details of this metabolite
               Regulating Pair (1) Experim Info click to show the details of experiment for validating this pair [1]
                      Introduced Variation Inhibition (AMP-DNM) of Ugcg
                      Induced Change GlcCer(d18:1/22:0) concentration: decrease
                      Summary Introduced Variation         Induced Change 
                      Disease Status Healthy individual
                      Details It is reported that inhibition of Ugcg leads to the decrease of glcCer(d18:1/22:0) levels compared with control group.
               Regulating Pair (2) Experim Info click to show the details of experiment for validating this pair [1]
                      Introduced Variation Knockdown (shRNA) of Ugcg
                      Induced Change GlcCer(d18:1/22:0) concentration: decrease
                      Summary Introduced Variation         Induced Change 
                      Disease Status Healthy individual
                      Details It is reported that knockdown of Ugcg leads to the decrease of glcCer(d18:1/22:0) levels compared with control group.
References
1 Adipocytes harbor a glucosylceramide biosynthesis pathway involved in iNKT cell activation. Biochim Biophys Acta Mol Cell Biol Lipids. 2019 Aug;1864(8):1157-1167.

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