ID:MPP5_HUMAN DESCRIPTION: RecName: Full=MAGUK p55 subfamily member 5; FUNCTION: May play a role in tight junctions biogenesis and in the establishment of cell polarity in epithelial cells. May modulate SC6A1/GAT1-mediated GABA uptake by stabilizing the transporter. Required for localization of EZR to the apical membrane of parietal cells and may play a role in the dynamic remodeling of the apical cytoskeleton (By similarity). SUBUNIT: Interacts with CRB3, LIN7C and MPDZ. Interacts with INADL, PARD6B, SC6A1 and EZR (By similarity). Forms a complex with CRB1 and MPP4. Component of a complex whose core is composed of ARHGAP17, AMOT, MPP5/PALS1, INADL/PATJ and PARD3/PAR3. Heterodimer with MPP1. Interacts with MPP7. SUBCELLULAR LOCATION: Cell membrane; Peripheral membrane protein. Endomembrane system; Peripheral membrane protein. Cell junction, tight junction. Note=Localized to the tight junctions of epithelial cells and a subset of intracellular vesicles. In the retina, detected at the outer limiting membrane (OLM), apical to the adherens junction (AJ), where it colocalizes with CRB1. Colocalizes with MPP1 in the retina at the outer limiting membrane (OLM). Localized to the Purkinje cell body and axon. TISSUE SPECIFICITY: Expressed in the retina (at protein level). DOMAIN: The L27 domain 1 functions in targeting to the tight junctions by binding to INADL (By similarity). DOMAIN: The PDZ domain binds to the C-terminus of SC6A1 (By similarity). SIMILARITY: Belongs to the MAGUK family. SIMILARITY: Contains 1 guanylate kinase-like domain. SIMILARITY: Contains 2 L27 domains. SIMILARITY: Contains 1 PDZ (DHR) domain. SIMILARITY: Contains 1 SH3 domain. SEQUENCE CAUTION: Sequence=AAH53366.1; Type=Miscellaneous discrepancy; Note=Contaminating sequence. Potential poly-A sequence; Sequence=BAB14172.1; Type=Erroneous initiation;
The RNAfold program from the Vienna RNA Package is used to perform the secondary structure predictions and folding calculations. The estimated folding energy is in kcal/mol. The more negative the energy, the more secondary structure the RNA is likely to have.
ModBase Predicted Comparative 3D Structure on Q8N3R9
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Orthologous Genes in Other Species
Orthologies between human, mouse, and rat are computed by taking the best BLASTP hit, and filtering out non-syntenic hits. For more distant species reciprocal-best BLASTP hits are used. Note that the absence of an ortholog in the table below may reflect incomplete annotations in the other species rather than a true absence of the orthologous gene.
BC095485 - Homo sapiens membrane protein, palmitoylated 5 (MAGUK p55 subfamily member 5), mRNA (cDNA clone MGC:111529 IMAGE:30520451), complete cds. AK291240 - Homo sapiens cDNA FLJ77534 complete cds, highly similar to Homo sapiens membrane protein, palmitoylated 5 (MAGUK p55 subfamily member 5) (MPP5), mRNA. AK098373 - Homo sapiens cDNA FLJ25507 fis, clone CBR05244, highly similar to Mus musculus PALS1 (Pals1) mRNA. BC053366 - Homo sapiens membrane protein, palmitoylated 5 (MAGUK p55 subfamily member 5), mRNA (cDNA clone IMAGE:6142510), partial cds. AL832326 - Homo sapiens mRNA; cDNA DKFZp451E015 (from clone DKFZp451E015); complete cds. BC129933 - Homo sapiens membrane protein, palmitoylated 5 (MAGUK p55 subfamily member 5), mRNA (cDNA clone MGC:156154 IMAGE:40082250), complete cds. AL832578 - Homo sapiens mRNA; cDNA DKFZp451E0516 (from clone DKFZp451E0516). KJ894550 - Synthetic construct Homo sapiens clone ccsbBroadEn_03944 MPP5 gene, encodes complete protein. AM392599 - Synthetic construct Homo sapiens clone IMAGE:100002331 for hypothetical protein (MPP5 gene). AB385253 - Synthetic construct DNA, clone: pF1KB9500, Homo sapiens MPP5 gene for MAGUK p55 subfamily member 5, complete cds, without stop codon, in Flexi system. AM392859 - Synthetic construct Homo sapiens clone IMAGE:100003081 for hypothetical protein (MPP5 gene). AK022677 - Homo sapiens cDNA FLJ12615 fis, clone NT2RM4001629, weakly similar to MAGUK P55 SUBFAMILY MEMBER 3. BC037966 - Homo sapiens membrane protein, palmitoylated 5 (MAGUK p55 subfamily member 5), mRNA (cDNA clone IMAGE:5764637), with apparent retained intron. AK057160 - Homo sapiens cDNA FLJ32598 fis, clone STOMA1000013. JD181909 - Sequence 162933 from Patent EP1572962. JD224156 - Sequence 205180 from Patent EP1572962. AL832936 - Homo sapiens mRNA; cDNA DKFZp666F1010 (from clone DKFZp666F1010). JD527940 - Sequence 508964 from Patent EP1572962. JD369840 - Sequence 350864 from Patent EP1572962. JD091863 - Sequence 72887 from Patent EP1572962. JD244851 - Sequence 225875 from Patent EP1572962. JD453811 - Sequence 434835 from Patent EP1572962. JD080053 - Sequence 61077 from Patent EP1572962. JD341114 - Sequence 322138 from Patent EP1572962. AF131764 - Homo sapiens clone 25032 mRNA sequence. JD023737 - Sequence 4761 from Patent EP1572962. JD031872 - Sequence 12896 from Patent EP1572962.
Biochemical and Signaling Pathways
Reactome (by CSHL, EBI, and GO)
Protein Q8N3R9 (Reactome details) participates in the following event(s):
R-HSA-420661 Crumbs forms a ternary complex with Pals1 and PATJ at tight junctions R-HSA-420029 Tight junction interactions R-HSA-421270 Cell-cell junction organization R-HSA-446728 Cell junction organization R-HSA-1500931 Cell-Cell communication