RPS15A
40S-ribosomni protein S15a je protein koji je kod ljudi kodiran genom RPS15A.[5][6] Izvedeni ribosomski protein 15a (RPS15A) ima 130 aminokiselina (SWISS-PROT P62244). Analizom hibridnih somatskih ćelija i analizom hibridne radijacije zračenja, Kenmochi et al. (1998) mapirali su ljudski gen RPS15A na poziciji 16p hromosoma 16.[7]
Ribosomi, organele koje kataliziraju sintezu proteina sastoje se od male 40S i velika 60S podjedinice. Zajedno se sastoje od četiri tipa RNK i približno 80 strukturno različitih proteina. Ovaj gen kodira ribosomski protein koji je komponenta 40S podjedinice. Protein pripada porodici S8P ribosomskih proteina. Nalazi se u citoplazmi. Kao što je tipsko za gene koji kodiraju ribosomske proteine, postoji više obrađenih pseudogena ovog gena raspršenih širom genoma.[6]
Aminokiselinska sekvenca
urediDužina polipeptidnog lanca je 130 aminokiselina, a molekulska težina 14.840 Da.[8].
10 | 20 | 30 | 40 | 50 | ||||
---|---|---|---|---|---|---|---|---|
MVRMNVLADA | LKSINNAEKR | GKRQVLIRPC | SKVIVRFLTV | MMKHGYIGEF | ||||
EIIDDHRAGK | IVVNLTGRLN | KCGVISPRFD | VQLKDLEKWQ | NNLLPSRQFG | ||||
FIVLTTSAGI | MDHEEARRKH | TGGKILGFFF |
- Simboli
Molekulska genetika
urediKod majke i dvije kćeri s Diamond-Blackfan anemijom-20 (DBA20), Ikeda et al. (2017) identificirali su heterozigotnu mutaciju prerade u genu RPS15A, koja je pokazala da izaziva gubitak funkcije i haploinsuficijenciju. Eksprimiranje mutacije u ćelijama ljudskog eritroida K562 pokazalo je da potiskuje proliferaciju ćelija i uzrokuje abnormalne nivoe nekoliko pre-rRNK podjedinica, što ukazuje na poremećenu preradu RNK.
Životinjski model
urediIkeda et al. (2017) otkrili su da je morfolinsko mijenjanje gena rps15a u embrionima zebrica rezultiralo abnormalnostima, uključujući tanku žumanjčanu vrećicu, savijeni rep i značajno smanjenu proizvodnju eritrocita. Mutirani fenotip mogao bi se spasiti ekspresijom divljeg tipa rps15a.[9]
Reference
uredi- ^ a b c GRCh38: Ensembl release 89: ENSG00000134419 - Ensembl, maj 2017
- ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000008683 - 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.
- ^ Kenmochi N, Kawaguchi T, Rozen S, Davis E, Goodman N, Hudson TJ, Tanaka T, Page DC (Aug 1998). "A map of 75 human ribosomal protein genes". Genome Res. 8 (5): 509–23. doi:10.1101/gr.8.5.509. PMID 9582194.
- ^ a b "Entrez Gene: RPS15A ribosomal protein S15a".
- ^ Kenmochi, N., Kawaguchi, T., Rozen, S., Davis, E., Goodman, N., Hudson, T. J., Tanaka, T., Page, D. C. A map of 75 human ribosomal protein genes. Genome Res. 8: 509-523, 1998. PubMed: 9582194
- ^ "UniProt, P62244". Pristupljeno 9. 7. 2021.
- ^ Ikeda, F., Yoshida, K., Toki, T., Uechi, T., Ishida, S., Nakajima, Y., Sasahara, Y., Okuno, Y., Kanezaki, R., Terui, K., Kamio, T., Kobayashi, A., and 14 others. Exome sequencing identified RPS15A as a novel causative gene for Diamond-Blackfan anemia. (Letter) Haematologica 102: e93-e96, 2017. Note: Electronic Article. PubMed: 27909223
Dopunska literatura
uredi- Wool IG, Chan YL, Glück A (1996). "Structure and evolution of mammalian ribosomal proteins". Biochem. Cell Biol. 73 (11–12): 933–47. doi:10.1139/o95-101. PMID 8722009.
- Chan YL, Olvera J, Paz V, Wool IG (1994). "The primary structure of rat ribosomal protein S15a". Biochem. Biophys. Res. Commun. 200 (3): 1498–504. doi:10.1006/bbrc.1994.1620. PMID 8185605.
- Vladimirov SN, Ivanov AV, Karpova GG, et al. (1996). "Characterization of the human small-ribosomal-subunit proteins by N-terminal and internal sequencing, and mass spectrometry". Eur. J. Biochem. 239 (1): 144–9. doi:10.1111/j.1432-1033.1996.0144u.x. PMID 8706699.
- 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.
- Lehner B, Semple JI, Brown SE, et al. (2004). "Analysis of a high-throughput yeast two-hybrid system and its use to predict the function of intracellular proteins encoded within the human MHC class III region". Genomics. 83 (1): 153–67. doi:10.1016/S0888-7543(03)00235-0. PMID 14667819.
- Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.
- Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.
- Yu Y, Ji H, Doudna JA, Leary JA (2005). "Mass spectrometric analysis of the human 40S ribosomal subunit: native and HCV IRES-bound complexes". Protein Sci. 14 (6): 1438–46. doi:10.1110/ps.041293005. PMC 2253395. PMID 15883184.
- Rual JF, Venkatesan K, Hao T, et al. (2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature. 437 (7062): 1173–8. Bibcode:2005Natur.437.1173R. doi:10.1038/nature04209. PMID 16189514. S2CID 4427026.