ID MCLN2_MOUSE Reviewed; 566 AA. AC Q8K595; Q3UCG4; Q8K2T6; Q9CQD3; DT 19-JUL-2004, integrated into UniProtKB/Swiss-Prot. DT 01-OCT-2002, sequence version 1. DT 24-JAN-2024, entry version 140. DE RecName: Full=Mucolipin-2; DE AltName: Full=Transient receptor potential channel mucolipin 2; DE Short=TRPML2; GN Name=Mcoln2; OS Mus musculus (Mouse). OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; OC Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae; OC Murinae; Mus; Mus. OX NCBI_TaxID=10090; RN [1] RP NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2). RC STRAIN=C57BL/6J; RX PubMed=12403827; DOI=10.1073/pnas.222425399; RA Di Palma F., Belyantseva I.A., Kim H.J., Vogt T.F., Kachar B., RA Noben-Trauth K.; RT "Mutations in Mcoln3 associated with deafness and pigmentation defects in RT varitint-waddler (Va) mice."; RL Proc. Natl. Acad. Sci. U.S.A. 99:14994-14999(2002). RN [2] RP NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1). RC STRAIN=C57BL/6J; RA Kennedy J.C., Falardeau J.L., Acierno J.S. Jr., Slaugenhaupt S.A.; RL Submitted (APR-2002) to the EMBL/GenBank/DDBJ databases. RN [3] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 1 AND 2). RC STRAIN=C57BL/6J; TISSUE=Bone marrow, and Embryo; RX PubMed=16141072; DOI=10.1126/science.1112014; RA Carninci P., Kasukawa T., Katayama S., Gough J., Frith M.C., Maeda N., RA Oyama R., Ravasi T., Lenhard B., Wells C., Kodzius R., Shimokawa K., RA Bajic V.B., Brenner S.E., Batalov S., Forrest A.R., Zavolan M., Davis M.J., RA Wilming L.G., Aidinis V., Allen J.E., Ambesi-Impiombato A., Apweiler R., RA Aturaliya R.N., Bailey T.L., Bansal M., Baxter L., Beisel K.W., Bersano T., RA Bono H., Chalk A.M., Chiu K.P., Choudhary V., Christoffels A., RA Clutterbuck D.R., Crowe M.L., Dalla E., Dalrymple B.P., de Bono B., RA Della Gatta G., di Bernardo D., Down T., Engstrom P., Fagiolini M., RA Faulkner G., Fletcher C.F., Fukushima T., Furuno M., Futaki S., RA Gariboldi M., Georgii-Hemming P., Gingeras T.R., Gojobori T., Green R.E., RA Gustincich S., Harbers M., Hayashi Y., Hensch T.K., Hirokawa N., Hill D., RA Huminiecki L., Iacono M., Ikeo K., Iwama A., Ishikawa T., Jakt M., RA Kanapin A., Katoh M., Kawasawa Y., Kelso J., Kitamura H., Kitano H., RA Kollias G., Krishnan S.P., Kruger A., Kummerfeld S.K., Kurochkin I.V., RA Lareau L.F., Lazarevic D., Lipovich L., Liu J., Liuni S., McWilliam S., RA Madan Babu M., Madera M., Marchionni L., Matsuda H., Matsuzawa S., Miki H., RA Mignone F., Miyake S., Morris K., Mottagui-Tabar S., Mulder N., Nakano N., RA Nakauchi H., Ng P., Nilsson R., Nishiguchi S., Nishikawa S., Nori F., RA Ohara O., Okazaki Y., Orlando V., Pang K.C., Pavan W.J., Pavesi G., RA Pesole G., Petrovsky N., Piazza S., Reed J., Reid J.F., Ring B.Z., RA Ringwald M., Rost B., Ruan Y., Salzberg S.L., Sandelin A., Schneider C., RA Schoenbach C., Sekiguchi K., Semple C.A., Seno S., Sessa L., Sheng Y., RA Shibata Y., Shimada H., Shimada K., Silva D., Sinclair B., Sperling S., RA Stupka E., Sugiura K., Sultana R., Takenaka Y., Taki K., Tammoja K., RA Tan S.L., Tang S., Taylor M.S., Tegner J., Teichmann S.A., Ueda H.R., RA van Nimwegen E., Verardo R., Wei C.L., Yagi K., Yamanishi H., RA Zabarovsky E., Zhu S., Zimmer A., Hide W., Bult C., Grimmond S.M., RA Teasdale R.D., Liu E.T., Brusic V., Quackenbush J., Wahlestedt C., RA Mattick J.S., Hume D.A., Kai C., Sasaki D., Tomaru Y., Fukuda S., RA Kanamori-Katayama M., Suzuki M., Aoki J., Arakawa T., Iida J., Imamura K., RA Itoh M., Kato T., Kawaji H., Kawagashira N., Kawashima T., Kojima M., RA Kondo S., Konno H., Nakano K., Ninomiya N., Nishio T., Okada M., Plessy C., RA Shibata K., Shiraki T., Suzuki S., Tagami M., Waki K., Watahiki A., RA Okamura-Oho Y., Suzuki H., Kawai J., Hayashizaki Y.; RT "The transcriptional landscape of the mammalian genome."; RL Science 309:1559-1563(2005). RN [4] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2). RC TISSUE=Mammary tumor; RX PubMed=15489334; DOI=10.1101/gr.2596504; RG The MGC Project Team; RT "The status, quality, and expansion of the NIH full-length cDNA project: RT the Mammalian Gene Collection (MGC)."; RL Genome Res. 14:2121-2127(2004). RN [5] RP FUNCTION, AND SUBCELLULAR LOCATION. RX PubMed=17050035; DOI=10.1016/j.ejcb.2006.08.004; RA Song Y., Dayalu R., Matthews S.A., Scharenberg A.M.; RT "TRPML cation channels regulate the specialized lysosomal compartment of RT vertebrate B-lymphocytes."; RL Eur. J. Cell Biol. 85:1253-1264(2006). RN [6] RP FUNCTION, AND TISSUE SPECIFICITY. RX PubMed=19763610; DOI=10.1007/s00424-009-0716-5; RA Samie M.A., Grimm C., Evans J.A., Curcio-Morelli C., Heller S., RA Slaugenhaupt S.A., Cuajungco M.P.; RT "The tissue-specific expression of TRPML2 (MCOLN-2) gene is influenced by RT the presence of TRPML1."; RL Pflugers Arch. 459:79-91(2009). RN [7] RP FUNCTION, AND ACTIVITY REGULATION. RX PubMed=22753890; DOI=10.1074/jbc.m112.368876; RA Grimm C., Joers S., Guo Z., Obukhov A.G., Heller S.; RT "Constitutive activity of TRPML2 and TRPML3 channels versus activation by RT low extracellular sodium and small molecules."; RL J. Biol. Chem. 287:22701-22708(2012). RN [8] RP FUNCTION, DISRUPTION PHENOTYPE, TISSUE SPECIFICITY, INDUCTION, AND RP SUBCELLULAR LOCATION. RX PubMed=26432893; DOI=10.4049/jimmunol.1500163; RA Sun L., Hua Y., Vergarajauregui S., Diab H.I., Puertollano R.; RT "Novel role of TRPML2 in the regulation of the innate immune response."; RL J. Immunol. 195:4922-4932(2015). CC -!- FUNCTION: Nonselective cation channel probably playing a role in the CC regulation of membrane trafficking events. Acts as a Ca(2+)-permeable CC cation channel with inwardly rectifying activity (PubMed:19763610). May CC activate ARF6 and be involved in the trafficking of GPI-anchored cargo CC proteins to the cell surface via the ARF6-regulated recycling pathway CC (By similarity). May play a role in immune processes. In adaptive CC immunity, TRPML2 and TRPML1 may play redundant roles in the function of CC the specialized lysosomes of B cells (PubMed:17050035). In the innate CC immune response, may play a role in the regulation of chemokine CC secretion and macrophage migration (PubMed:26432893). Through a CC possible and probably tissue-specific heteromerization with MCOLN1 may CC be at least in part involved in many lysosome-dependent cellular CC events. {ECO:0000250|UniProtKB:Q8IZK6, ECO:0000269|PubMed:17050035, CC ECO:0000269|PubMed:19763610, ECO:0000269|PubMed:22753890, CC ECO:0000269|PubMed:26432893, ECO:0000305}. CC -!- ACTIVITY REGULATION: Channel activity is reduced by low CC extracellular/lumenal pH level. {ECO:0000269|PubMed:22753890, CC ECO:0000305}. CC -!- SUBUNIT: Forms homooligomeric complexes; probably tetrameric. Can CC heterooligomerize with MCOLN1; heteromeric assemblies have different CC channel properties as compared to the respective homooligomers and may CC be tissue-specific. Interacts with TMEM176A. CC {ECO:0000250|UniProtKB:Q8IZK6}. CC -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000250|UniProtKB:Q8IZK6}; CC Multi-pass membrane protein {ECO:0000250|UniProtKB:F6RG56}. Lysosome CC membrane {ECO:0000305|PubMed:17050035}; Multi-pass membrane protein CC {ECO:0000250|UniProtKB:F6RG56}. Recycling endosome membrane CC {ECO:0000269|PubMed:26432893}; Multi-pass membrane protein CC {ECO:0000250|UniProtKB:F6RG56}. Note=Localizes to recycling endosomes CC in activated macrophages and microglia. {ECO:0000269|PubMed:26432893}. CC -!- ALTERNATIVE PRODUCTS: CC Event=Alternative splicing; Named isoforms=2; CC Name=1; Synonyms=TRPML2lv; CC IsoId=Q8K595-1; Sequence=Displayed; CC Name=2; Synonyms=TRPML2sv; CC IsoId=Q8K595-2; Sequence=VSP_010822; CC -!- TISSUE SPECIFICITY: Isoform 1 is widely expressed at very low levels. CC Isoform 2 is expressed at high levels in lymphoid tissues (thymus and CC spleen) and kidney, and at moderate levels in heart, lung, liver and CC stomach. Expressed in activated macrophages and microglia (at protein CC level). {ECO:0000269|PubMed:19763610, ECO:0000269|PubMed:26432893}. CC -!- INDUCTION: Up-regulated in microglia cells and macrophages by bacterial CC lipopolysaccharide (LPS). Up-regulated by infection with M.smegmatis. CC {ECO:0000269|PubMed:26432893}. CC -!- DOMAIN: The most N-terminal extracellular/lumenal domain (referred to CC as I-II linker or polycystin-mucolipin domain) contributes to a CC structure with a four-fold rotational symmetry in a tetrameric CC assembly; the structure contains a central highly electronegative pore CC with a 14 A diameter. The pore is critical for Ca(2+) and pH CC regulation. The protruding structure formed by the I-II linkers may CC contain all the interaction sites with lipids and proteins in the CC endolysosomal lumen. {ECO:0000250|UniProtKB:Q9GZU1}. CC -!- DISRUPTION PHENOTYPE: No visible phenotype. The secretion of specific CC cytokines (CCL3, CCL5 and CXCL2) by macrophages exposed to bacterial CC lipopolysaccharide (LPS) is decreased. Mutant mice display decreased CC migration of macrophages into the intraperitoneal space after injection CC with LPS, or after infection with E.coli O78:H11 (strain H10407). CC {ECO:0000269|PubMed:26432893}. CC -!- SIMILARITY: Belongs to the transient receptor (TC 1.A.4) family. CC Polycystin subfamily. MCOLN2 sub-subfamily. {ECO:0000305}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AY083532; AAM08925.1; -; mRNA. DR EMBL; AF503575; AAM28596.1; -; mRNA. DR EMBL; AK014467; BAB29372.1; -; mRNA. DR EMBL; AK019454; BAB31730.1; -; mRNA. DR EMBL; AK150446; BAE29568.1; -; mRNA. DR EMBL; AK150547; BAE29649.1; -; mRNA. DR EMBL; AK152067; BAE30921.1; -; mRNA. DR EMBL; AK152943; BAE31614.1; -; mRNA. DR EMBL; AK159172; BAE34872.1; -; mRNA. DR EMBL; BC029847; AAH29847.1; -; mRNA. DR CCDS; CCDS38663.1; -. [Q8K595-1] DR CCDS; CCDS38664.1; -. [Q8K595-2] DR RefSeq; NP_001005846.1; NM_001005846.2. [Q8K595-2] DR RefSeq; NP_080932.2; NM_026656.4. [Q8K595-1] DR PDB; 7DYS; EM; 3.18 A; A/B/C/D=1-518. DR PDBsum; 7DYS; -. DR AlphaFoldDB; Q8K595; -. DR EMDB; EMD-30924; -. DR SMR; Q8K595; -. DR STRING; 10090.ENSMUSP00000011152; -. DR iPTMnet; Q8K595; -. DR PhosphoSitePlus; Q8K595; -. DR PaxDb; 10090-ENSMUSP00000011152; -. DR ProteomicsDB; 292193; -. [Q8K595-1] DR ProteomicsDB; 292194; -. [Q8K595-2] DR Antibodypedia; 19780; 69 antibodies from 13 providers. DR DNASU; 68279; -. DR Ensembl; ENSMUST00000011152.14; ENSMUSP00000011152.8; ENSMUSG00000011008.14. [Q8K595-1] DR Ensembl; ENSMUST00000098524.5; ENSMUSP00000096125.5; ENSMUSG00000011008.14. [Q8K595-2] DR GeneID; 68279; -. DR KEGG; mmu:68279; -. DR UCSC; uc008rqy.1; mouse. [Q8K595-1] DR AGR; MGI:1915529; -. DR CTD; 255231; -. DR MGI; MGI:1915529; Mcoln2. DR VEuPathDB; HostDB:ENSMUSG00000011008; -. DR eggNOG; KOG3733; Eukaryota. DR GeneTree; ENSGT00950000183036; -. DR HOGENOM; CLU_020945_1_1_1; -. DR InParanoid; Q8K595; -. DR OMA; CDADRWE; -. DR OrthoDB; 2877219at2759; -. DR PhylomeDB; Q8K595; -. DR TreeFam; TF317783; -. DR Reactome; R-MMU-3295583; TRP channels. DR BioGRID-ORCS; 68279; 3 hits in 62 CRISPR screens. DR PRO; PR:Q8K595; -. DR Proteomes; UP000000589; Chromosome 3. DR RNAct; Q8K595; Protein. DR Bgee; ENSMUSG00000011008; Expressed in ileal epithelium and 78 other cell types or tissues. DR ExpressionAtlas; Q8K595; baseline and differential. DR GO; GO:0005764; C:lysosome; IEA:UniProtKB-KW. DR GO; GO:0016020; C:membrane; IBA:GO_Central. DR GO; GO:0055037; C:recycling endosome; IDA:MGI. DR GO; GO:0055038; C:recycling endosome membrane; IEA:UniProtKB-SubCell. DR GO; GO:0042802; F:identical protein binding; IPI:MGI. DR GO; GO:0072345; F:NAADP-sensitive calcium-release channel activity; IBA:GO_Central. DR GO; GO:0002250; P:adaptive immune response; IEA:UniProtKB-KW. DR GO; GO:0045087; P:innate immune response; IEA:UniProtKB-KW. DR GO; GO:1905517; P:macrophage migration; IMP:MGI. DR GO; GO:1990266; P:neutrophil migration; IMP:MGI. DR GO; GO:0071651; P:positive regulation of chemokine (C-C motif) ligand 5 production; IMP:MGI. DR GO; GO:2000343; P:positive regulation of chemokine (C-X-C motif) ligand 2 production; IMP:MGI. DR GO; GO:0032722; P:positive regulation of chemokine production; IMP:MGI. DR GO; GO:0071642; P:positive regulation of macrophage inflammatory protein 1 alpha production; IMP:MGI. DR GO; GO:0071639; P:positive regulation of monocyte chemotactic protein-1 production; IMP:MGI. DR GO; GO:0015031; P:protein transport; IEA:UniProtKB-KW. DR GO; GO:2000341; P:regulation of chemokine (C-X-C motif) ligand 2 production; IMP:MGI. DR Gene3D; 1.10.287.70; -; 1. DR InterPro; IPR049134; MCLN_ECD. DR InterPro; IPR039031; Mucolipin. DR InterPro; IPR013122; PKD1_2_channel. DR PANTHER; PTHR12127; MUCOLIPIN; 1. DR PANTHER; PTHR12127:SF4; MUCOLIPIN-2; 1. DR Pfam; PF21381; MCLN_ECD; 1. DR Pfam; PF08016; PKD_channel; 1. DR Genevisible; Q8K595; MM. PE 1: Evidence at protein level; KW 3D-structure; Adaptive immunity; Alternative splicing; Calcium; KW Calcium channel; Calcium transport; Cell membrane; Disulfide bond; KW Endosome; Immunity; Innate immunity; Ion channel; Ion transport; Lysosome; KW Membrane; Protein transport; Reference proteome; Transmembrane; KW Transmembrane helix; Transport. FT CHAIN 1..566 FT /note="Mucolipin-2" FT /id="PRO_0000215366" FT TOPO_DOM 1..65 FT /note="Cytoplasmic" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT TRANSMEM 66..86 FT /note="Helical" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT TOPO_DOM 87..288 FT /note="Extracellular" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT TRANSMEM 289..309 FT /note="Helical" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT TOPO_DOM 310..346 FT /note="Cytoplasmic" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT TRANSMEM 347..367 FT /note="Helical" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT TOPO_DOM 368..376 FT /note="Extracellular" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT TRANSMEM 377..397 FT /note="Helical" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT TOPO_DOM 398..419 FT /note="Cytoplasmic" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT TRANSMEM 420..440 FT /note="Helical" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT TOPO_DOM 441..448 FT /note="Extracellular" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT INTRAMEM 449..469 FT /note="Pore-forming" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT TOPO_DOM 470..480 FT /note="Extracellular" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT TRANSMEM 481..502 FT /note="Helical" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT TOPO_DOM 503..566 FT /note="Cytoplasmic" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT REGION 107..123 FT /note="Extracellular/lumenal pore loop" FT /evidence="ECO:0000250|UniProtKB:Q9GZU1" FT MOTIF 461..464 FT /note="Selectivity filter" FT /evidence="ECO:0000250|UniProtKB:F6RG56" FT DISULFID 164..190 FT /evidence="ECO:0000250|UniProtKB:Q9GZU1" FT DISULFID 243..274 FT /evidence="ECO:0000250|UniProtKB:Q9GZU1" FT VAR_SEQ 1..28 FT /note="Missing (in isoform 2)" FT /evidence="ECO:0000303|PubMed:12403827, FT ECO:0000303|PubMed:15489334, ECO:0000303|PubMed:16141072" FT /id="VSP_010822" FT CONFLICT 558 FT /note="S -> N (in Ref. 4; AAH29847)" FT /evidence="ECO:0000305" FT HELIX 67..105 FT /evidence="ECO:0007829|PDB:7DYS" FT STRAND 115..117 FT /evidence="ECO:0007829|PDB:7DYS" FT STRAND 119..121 FT /evidence="ECO:0007829|PDB:7DYS" FT STRAND 123..125 FT /evidence="ECO:0007829|PDB:7DYS" FT HELIX 126..139 FT /evidence="ECO:0007829|PDB:7DYS" FT HELIX 141..144 FT /evidence="ECO:0007829|PDB:7DYS" FT STRAND 147..151 FT /evidence="ECO:0007829|PDB:7DYS" FT STRAND 160..168 FT /evidence="ECO:0007829|PDB:7DYS" FT STRAND 186..193 FT /evidence="ECO:0007829|PDB:7DYS" FT HELIX 195..198 FT /evidence="ECO:0007829|PDB:7DYS" FT STRAND 202..204 FT /evidence="ECO:0007829|PDB:7DYS" FT HELIX 205..207 FT /evidence="ECO:0007829|PDB:7DYS" FT HELIX 209..211 FT /evidence="ECO:0007829|PDB:7DYS" FT TURN 215..217 FT /evidence="ECO:0007829|PDB:7DYS" FT STRAND 218..229 FT /evidence="ECO:0007829|PDB:7DYS" FT TURN 233..237 FT /evidence="ECO:0007829|PDB:7DYS" FT STRAND 246..253 FT /evidence="ECO:0007829|PDB:7DYS" FT STRAND 261..266 FT /evidence="ECO:0007829|PDB:7DYS" FT HELIX 292..318 FT /evidence="ECO:0007829|PDB:7DYS" FT HELIX 346..365 FT /evidence="ECO:0007829|PDB:7DYS" FT HELIX 377..396 FT /evidence="ECO:0007829|PDB:7DYS" FT HELIX 397..399 FT /evidence="ECO:0007829|PDB:7DYS" FT HELIX 401..439 FT /evidence="ECO:0007829|PDB:7DYS" FT HELIX 449..460 FT /evidence="ECO:0007829|PDB:7DYS" FT STRAND 462..464 FT /evidence="ECO:0007829|PDB:7DYS" FT HELIX 465..470 FT /evidence="ECO:0007829|PDB:7DYS" FT HELIX 478..516 FT /evidence="ECO:0007829|PDB:7DYS" SQ SEQUENCE 566 AA; 65450 MW; 314CEC662B3BDC07 CRC64; MPGDEETLDL PAWNRVPDLT WGPHHRSAMA SLDSEVREEC LREDLKFYFM SPCEKYRARR QIPWKLGLQI LKIVMVTTQL VRFGLSNQLV VAFKEDNTVA FKHLFLKGFS GVDEDDYSCS IYTQENTYES IFFAIKQYRH LKNISLATLG YGESEDNRTG LKVCKQHYKT GAMFSSNETL NIDSDIETDC IHLDLQVLTT EPEDWAQTSF FRLDFYRLVQ VDISFALKGI DLQAVHSREI PDCYLFQNTI TFDNTAHSGK IKIYLNSEAN IEECKNMNIS GSTQRSTHYL LVFDVFVIMI CLASLILCTR SIVLALRLRK RFLNFFLEKY KQRVCGADQW EFVNGWYVLV TISDLMTIIG SILKMEIKAK KLTNYDVCSI LLGTSTLFVW VGVIRYLGYF QTYNVLILTM QASLPKVLRF CACAGMIYLG YTFCGWIVLG PYHEKFENLN IVAECLFSLV NGDDMFATFA QIQQKSILVW LFSRLYLYSF ISLFIYMVLS LFIALITDSY HTIKKYQQHG FPETDLQKFL KESGSKDGYQ KQPSALLSCL CCLRRRRSND HLILID //