SLC20A2
Natrij-ovisni fosfatni transporter 2 je protein koji je kod ljudi kodiran genom SLC20A2.[5][6][7]
Aminokiselinska sekvenca
urediDužina polipeptidnog lanca je 652 aminokiseline, а molekulska težina 70.392 Da.[8]
10 | 20 | 30 | 40 | 50 | ||||
---|---|---|---|---|---|---|---|---|
MAMDEYLWMV | ILGFIIAFIL | AFSVGANDVA | NSFGTAVGSG | VVTLRQACIL | ||||
ASIFETTGSV | LLGAKVGETI | RKGIIDVNLY | NETVETLMAG | EVSAMVGSAV | ||||
WQLIASFLRL | PISGTHCIVG | STIGFSLVAI | GTKGVQWMEL | VKIVASWFIS | ||||
PLLSGFMSGL | LFVLIRIFIL | KKEDPVPNGL | RALPVFYAAT | IAINVFSIMY | ||||
TGAPVLGLVL | PMWAIALISF | GVALLFAFFV | WLFVCPWMRR | KITGKLQKEG | ||||
ALSRVSDESL | SKVQEAESPV | FKELPGAKAN | DDSTIPLTGA | AGETLGTSEG | ||||
TSAGSHPRAA | YGRALSMTHG | SVKSPISNGT | FGFDGHTRSD | GHVYHTVHKD | ||||
SGLYKDLLHK | IHIDRGPEEK | PAQESNYRLL | RRNNSYTCYT | AAICGLPVHA | ||||
TFRAADSSAP | EDSEKLVGDT | VSYSKKRLRY | DSYSSYCNAV | AEAEIEAEEG | ||||
GVEMKLASEL | ADPDQPREDP | AEEEKEEKDA | PEVHLLFHFL | QVLTACFGSF | ||||
AHGGNDVSNA | IGPLVALWLI | YKQGGVTQEA | ATPVWLLFYG | GVGICTGLWV | ||||
WGRRVIQTMG | KDLTPITPSS | GFTIELASAF | TVVIASNIGL | PVSTTHCKVG | ||||
SVVAVGWIRS | RKAVDWRLFR | NIFVAWFVTV | PVAGLFSAAV | MALLMYGILP | ||||
YV |
Genomika
urediOvaj gen se nalazi na kratkom kraku hromosoma 8, sekvenca 8p12-p11, na minus (Crickovom) lancu. Dužina je 123.077 bp. Kodirani protein ima 652 aminokiseline, a predviđena molekulska težina proteina je 70.392 kiloDaltona.
Funkcija
urediProtein djeluje kao homodimer i uključen je u transport fosfata, apsorbiranjem fosfata iz intersticijske tekućine za normalne ćelijskee funkcije, kao što su ćelijskii metabolizam, transdukcija signala i sinteza nukleinskih kiselina i lipida.
Klinički značaj
urediMutacije u genu SLC20A2 povezane su s idiopatskom kalcifikacijom baznih ganglija (Fahrov sindrom). Ova povezanost sugerira da je porodična idiopatska kalcifikacija baznih ganglija uzrokovana promjenama u homeostazi fosfata, budući da ovaj gen kodira PIT-2, anorganski transporter fosfata.[9]
Također pogledajte
urediReference
uredi- ^ a b c GRCh38: Ensembl release 89: ENSG00000168575 - Ensembl, maj 2017
- ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000037656 - Ensembl, maj 2017
- ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
- ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
- ^ Kozak SL, Siess DC, Kavanaugh MP, Miller AD, Kabat D (Jun 1995). "The envelope glycoprotein of an amphotropic murine retrovirus binds specifically to the cellular receptor/phosphate transporter of susceptible species". J Virol. 69 (6): 3433–40. doi:10.1128/JVI.69.6.3433-3440.1995. PMC 189055. PMID 7745689.
- ^ Bottger P, Hede SE, Grunnet M, Hoyer B, Klaerke DA, Pedersen L (Nov 2006). "Characterization of transport mechanisms and determinants critical for Na+-dependent Pi symport of the PiT family paralogs human PiT1 and PiT2". Am J Physiol Cell Physiol. 291 (6): C1377–87. doi:10.1152/ajpcell.00015.2006. PMID 16790504. S2CID 6459667.
- ^ "Entrez Gene: SLC20A2 solute carrier family 20 (phosphate transporter), member 2".
- ^ "UniProt, Q08357" (jezik: engleski). Pristupljeno 21. 9. 2021.
- ^ Wang C, Li Y, Shi L, Ren J, Patti M, Wang T, de Oliveira JR, Sobrido MJ, Quintáns B, Baquero M, Cui X, Zhang XY, Wang L, Xu H, Wang J, Yao J, Dai X, Liu J, Zhang L, Ma H, Gao Y, Ma X, Feng S, Liu M, Wang QK, Forster IC, Zhang X, Liu JY (februar 2012). "Mutations in SLC20A2 link familial idiopathic basal ganglia calcification with phosphate homeostasis". Nat Genet. 44 (3): 254–6. doi:10.1038/ng.1077. PMID 22327515. S2CID 2515200.
Dopunska literatura
uredi- Garcia JV, Jones C, Miller AD (1991). "Localization of the amphotropic murine leukemia virus receptor gene to the pericentromeric region of human chromosome 8". J. Virol. 65 (11): 6316–9. doi:10.1128/JVI.65.11.6316-6319.1991. PMC 250343. PMID 1656098.
- van Zeijl M, Johann SV, Closs E, et al. (1994). "A human amphotropic retrovirus receptor is a second member of the gibbon ape leukemia virus receptor family". Proc. Natl. Acad. Sci. U.S.A. 91 (3): 1168–72. Bibcode:1994PNAS...91.1168V. doi:10.1073/pnas.91.3.1168. PMC 521475. PMID 8302848.
- Salaün C, Gyan E, Rodrigues P, Heard JM (2002). "Pit2 assemblies at the cell surface are modulated by extracellular inorganic phosphate concentration". J. Virol. 76 (9): 4304–11. doi:10.1128/JVI.76.9.4304-4311.2002. PMC 155110. PMID 11932396.
- Bottger P, Pedersen L (2003). "Two highly conserved glutamate residues critical for type III sodium-dependent phosphate transport revealed by uncoupling transport function from retroviral receptor function". J. Biol. Chem. 277 (45): 42741–7. doi:10.1074/jbc.M207096200. PMID 12205090.
- Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
- Bøttger P, Pedersen L (2004). "The central half of Pit2 is not required for its function as a retroviral receptor". J. Virol. 78 (17): 9564–7. doi:10.1128/JVI.78.17.9564-9567.2004. PMC 506934. PMID 15308749.
- Bøttger P, Pedersen L (2005). "Evolutionary and experimental analyses of inorganic phosphate transporter PiT family reveals two related signature sequences harboring highly conserved aspartic acids critical for sodium-dependent phosphate transport function of human PiT2". FEBS J. 272 (12): 3060–74. doi:10.1111/j.1742-4658.2005.04720.x. PMID 15955065. S2CID 25673076.
- Ravera S, Virkki LV, Murer H, Forster IC (2007). "Deciphering PiT transport kinetics and substrate specificity using electrophysiology and flux measurements" (PDF). Am. J. Physiol., Cell Physiol. 293 (2): C606–20. doi:10.1152/ajpcell.00064.2007. PMID 17494632. Arhivirano s originala (PDF), 21. 9. 2021. Pristupljeno 21. 9. 2021.