Subunit of glucosidase 2, which cleaves sequentially the 2 innermost alpha-1,3-linked glucose residues from the Glc(2)Man(9)GlcNAc(2) oligosaccharide precursor of immature glycoproteins. Specifically required for the cleavage of the final glucose.
Score = 50.1 bits (118), Expect = 4e-06, Method: Composition-based stats.
Identities = 21/59 (35%), Positives = 36/59 (61%)
Query: 20 WGKWLEDSNYSVMFYDRGHTCWNGPQRTTHVRIKCGLENELISVTEPNRCEYLFEFLTP 78
+G E +N V+ Y+ G CWNGP+R+ V ++C + ++ SV E +C Y+F+ + P
Sbjct: 626 FGNLNELNNGLVLEYENGDQCWNGPRRSATVFVRCSDKFKIRSVHEATKCNYIFDVVGP 684
Subunit of glucosidase 2, which cleaves sequentially the 2 innermost alpha-1,3-linked glucose residues from the Glc(2)Man(9)GlcNAc(2) oligosaccharide precursor of immature glycoproteins. Specifically required for the cleavage of the final glucose.
The sequences found in this family are similar to a region found in the beta-subunit of glucosidase II, which is also known as protein kinase C substrate 80K-H (PRKCSH). The enzyme catalyzes the sequential removal of two alpha-1,3-linked glucose residues in the second step of N-linked oligosaccharide processing. The beta subunit is required for the solubility and stability of the heterodimeric enzyme, and is involved in retaining the enzyme within the endoplasmic reticulum. The beta-subunit confers substrate specificity for di- and monoglucosylated glycans on the glucose-trimming activity of the alpha-subunit. Length = 154
>PF00878 CIMR: Cation-independent mannose-6-phosphate receptor repeat; InterPro: IPR000479 The cation-independent mannose-6-phosphate receptor is a type I membrane protein responsible for transport of phosphorylated lysosomal enzymes from the golgi complex and the cell surface to lysosomes
Lysosomal enzymes bearing phosphomannosyl residues bind specifically to mannose-6-phosphate receptors in the golgi apparatus and the resulting receptor-ligand complex is transported to an acidic prelysosomal compartment where the low pH mediates the dissociation of the complex. This receptor also binds insulin growth factor. It contains 15 copies of a repeat.; GO: 0005215 transporter activity, 0006810 transport, 0005737 cytoplasm, 0016021 integral to membrane; PDB: 1SYO_A 1SZ0_A 1Q25_A 2KVB_A 2KVA_A 2L2G_A 2V5O_A 1GP0_A 1GP3_A 1E6F_B ....
>PF09451 ATG27: Autophagy-related protein 27; InterPro: IPR018939 Autophagy is a degradative transport pathway that delivers cytosolic proteins to the lysosome (vacuole) [] and is induced by starvation []
Cytosolic proteins appear inside the vacuole enclosed in autophagic vesicles. Autophagy significantly differs from other transport pathways by using double membrane layered transport intermediates, called autophagosomes [, ]. The breakdown of vesicular transport intermediates is a unique feature of autophagy []. Autophagy can also function in the elimination of invading bacteria and antigens []. There are more than 25 AuTophaGy-related (ATG) genes that are essential for autophagy, although it is still not known how the autophagosome is made. Atg9 is a potential membrane carrier to deliver lipids that are used to form the vesicle. Atg27 is another transmembrane protein, and is a cycling protein []. It acts as an effector of VPS34 phosphatidylinositol 3-phosphate kinase signalling and regulates the cytoplasm to vacuole transport (Cvt) vesicle formation. It is also required for autophagy-dependent cycling of ATG9.
>PF07915 PRKCSH: Glucosidase II beta subunit-like protein; InterPro: IPR012913 The sequences found in this family are similar to a region found in the beta-subunit of glucosidase II (P14314 from SWISSPROT), which is also known as protein kinase C substrate 80K-H (PRKCSH)
The enzyme catalyses the sequential removal of two alpha-1,3-linked glucose residues in the second step of N-linked oligosaccharide processing []. The beta subunit is required for the solubility and stability of the heterodimeric enzyme, and is involved in retaining the enzyme within the endoplasmic reticulum []. Mutations in the gene coding for PRKCSH have been found to be involved in the development of autosomal dominant polycystic liver disease (ADPLD), but the precise role the protein has in the pathogenesis of this disease is unknown []. ; PDB: 3AIH_A.
Score = 66.4 bits (161), Expect = 4e-16
Identities = 20/94 (21%), Positives = 28/94 (29%), Gaps = 19/94 (20%)
Query: 6 QRPKNGGAETKLGNWGKWLEDSN-------------YSVMFYDRGHTC-WNGPQRTTHVR 51
+ + G LG + + + Y Y G C NG R VR
Sbjct: 29 EDSEIKGEVLYLGYYQSAFDWDDETAKASKQHRLKRYHSQTYGNGSKCDLNGRPREAEVR 88
Query: 52 IKCG-----LENELISVTEPNRCEYLFEFLTPAA 80
C + + V EP C Y+ TP
Sbjct: 89 FLCDEGAGISGDYIDRVDEPLSCSYVLTIRTPRL 122
Score = 48.5 bits (115), Expect = 5e-09
Identities = 15/81 (18%), Positives = 25/81 (30%), Gaps = 5/81 (6%)
Query: 5 SQRPKNGGAETKLGNWGKWLEDSN-YSVMFYDRGHTCWNGPQ--RTTHVRIKCGLENEL- 60
Q ++ LG L + + Y G N + R T + C + +
Sbjct: 66 CQVSRSDRKSWNLGRSNAKLSYYDGMIQLTYRDGTPYNNEKRTPRATLITFLCDRDAGVG 125
Query: 61 -ISVTEPNRCEYLFEFLTPAA 80
E + Y F + T A
Sbjct: 126 FPEYQEEDNSTYNFRWYTSYA 146
Score = 43.7 bits (102), Expect = 8e-07
Identities = 13/60 (21%), Positives = 19/60 (31%), Gaps = 5/60 (8%)
Query: 26 DSNYSVMFYDRGHTCWNGPQRTTHVRIKCGLENELISVTEP-----NRCEYLFEFLTPAA 80
+ Y G C +G QR + + +C P C Y F + T A
Sbjct: 371 SDGDLTLIYFGGEECSSGFQRMSVINFECNQTAGNNGRGAPVFTGEVDCTYFFTWDTKYA 430
Score = 52.5 bits (125), Expect = 6e-11
Identities = 14/80 (17%), Positives = 21/80 (26%), Gaps = 7/80 (8%)
Query: 8 PKNGGAETKLGNWGKWL--EDSNYSVMFYDRGHTCWNGPQRTTHVRIKCGLENELISVTE 65
+ G + Y G C +G QR + + +C
Sbjct: 71 KADSTQVKVAGRPQNLTLRYSDGDLTLIYFGGEECSSGFQRMSVINFECNQTAGNNGRGA 130
Query: 66 P-----NRCEYLFEFLTPAA 80
P C Y F + T A
Sbjct: 131 PVFTGEVDCTYFFTWDTKYA 150
