| SRP72/YPL210C Single Page Format | |
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| SUMMARY PARAGRAPH for SRP72/YPL210C for SRP72 |
| The signal recognition particle (SRP) is an abundant and conserved ribonucleoprotein necessary for targeting proteins to the endoplasmic reticulum membrane (1). SRP in eukaryotes contains six subunits and a 7S RNA molecule; in S. cerevisiae the subunits are encoded by SRP14, SRP21, SRP68, SRP72, SEC65, and SRP54, and the RNA (termed scR1) is encoded by SCR1 (1, 2). With the exception of Srp54p, the proteins and RNA assemble into a core complex in the nucleus; this particle is exported to the cytoplasm where Srp54p joins to form the complete complex (3). Sec65p is required for association of Srp54p with the SRP particle (4). Loss of any of the SRP components causes a slow growth phenotype and loss of SRP-mediated translocation, but not cell death, indicating that the signal recognition particle is not essential in yeast and SRP-independent translocation can occur (1, 2). The first step of SRP-mediated cotranslational targeting is interaction between SRP and the ribosome nascent chain complex (RNC), which is comprised of the translating ribosome and the emerging nascent protein. SRP interacts with the RNC through the N-terminal hydrophobic signal sequence of the nascent protein. SRP then directs the RNC to the ER membrane via interaction between SRP and a signal receptor complex (SR), encoded by SRP101 and SRP102. Finally, the RNC is transferred to the translocon, a protein-conducting membrane channel, and SRP and the SR dissociate. GTP binding by both SRP (via the Srp54p subunit) and the SR is critical for their interaction, and GTP hydrolysis facilitates their dissociation (reviewed in 5, and see 5 for more details). Last Updated: 2008-08-11 |
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| Topics | Reference | Other Genes Addressed |
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14 curated references; 0 references not yet curated | Reviews
| Fonzi WA (2009) The protein secretory pathway of Candida albicans. Mycoses
| |BTT1 |EGD1 |EGD2 |GEA1 |GEA2 |GSG1 |NCE101 |NCE102 |SCR1 |SEC14 |SEC3 |SEC4 |SEC61 |SEC65 |MORE |
Mutants/Phenotypes Strains/Constructs
| Breslow DK, et al. (2008) A comprehensive strategy enabling high-resolution functional analysis of the yeast genome. Nat Methods 5(8):711-8
| |AAR2 |ABD1 |ABF1 |ACC1 |ACP1 |ADE13 |AFG2 |ALA1 |ALG1 |ALG13 |ALG14 |ALG2 |ALG7 |ALR1 |MORE |
Fungal Related Genes/Proteins
| Ruiz-Pavon L and Dominguez A (2007) Characterization of the Yarrowia lipolytica YlSRP72 gene, a component of the yeast signal recognition particle. Int Microbiol 10(4):283-9
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Regulation of Strains/Constructs Transcription
| Kovalskaya ON, et al. (2006) Does a deficiency of the signal recognition particle (SRP)-pathway affect the biosynthesis of its components in Saccharomyces cerevisiae and Escherichia coli? Biochemistry (Mosc) 71(7):723-9
| |SCR1 |SEC65 |SRP101 |SRP14 |SRP21 |
Function/Process Mutants/Phenotypes Strains/Constructs
| Altmann K and Westermann B (2005) Role of essential genes in mitochondrial morphogenesis in Saccharomyces cerevisiae. Mol Biol Cell 16(11):5410-7
| |ARC35 |ARC40 |ARP2 |BFR2 |CCT4 |CCT6 |CDC34 |CDC53 |COF1 |DSL1 |ERG1 |ERG10 |ERG12 |ERG13 |MORE |
Genetic Interactions Mutants/Phenotypes Strains/Constructs
| Davierwala AP, et al. (2005) The synthetic genetic interaction spectrum of essential genes. Nat Genet 37(10):1147-52
| |ABD1 |ACT1 |ALG13 |ALG14 |ALG7 |APC11 |ARL3 |ARP2 |ARP7 |ASK1 |AVO1 |BET3 |BET5 |BIM1 |MORE |
Reviews
| Pool MR (2005) Signal recognition particles in chloroplasts, bacteria, yeast and mammals (review). Mol Membr Biol 22(1-2):3-15
| |SCR1 |SEC65 |SRP101 |SRP14 |SRP21 |SRP54 |SRP68 |
DNA/RNA Sequence Features
| Kellis M, et al. (2003) Sequencing and comparison of yeast species to identify genes and regulatory elements. Nature 423(6937):241-54
| |AAT2 |API2 |ASA1 |ASR1 |ATG4 |AUA1 |AVT5 |BLM10 |BUD19 |CAT5 |CBS1 |CIN8 |COG2 |COQ3 |MORE |
Function/Process Mutants/Phenotypes Strains/Constructs
| Willer M, et al. (2003) An in vitro assay using overexpressed yeast SRP demonstrates that cotranslational translocation is dependent upon the J-domain of Sec63p. Biochemistry 42(23):7171-7
| |SCR1 |SEC63 |SEC65 |SRP14 |SRP21 |SRP54 |SRP68 |
Function/Process Genetic Interactions Mutants/Phenotypes Protein-Nucleic Acid Interactions Protein-protein Interactions Strains/Constructs
| Grosshans H, et al. (2001) Biogenesis of the signal recognition particle (SRP) involves import of SRP proteins into the nucleolus, assembly with the SRP-RNA, and Xpo1p-mediated export. J Cell Biol 153(4):745-62
| |CRM1 |DIS3 |KAP123 |MEX67 |MTR10 |NSP1 |NUP159 |NUP85 |PSE1 |RNA1 |RRP4 |SCR1 |SEC65 |SRM1 |MORE |
Cellular Location Function/Process Protein Processing/Modification/Regulation Techniques and Reagents
| Ciufo LF and Brown JD (2000) Nuclear export of yeast signal recognition particle lacking Srp54p by the Xpo1p/Crm1p NES-dependent pathway. Curr Biol 10(20):1256-64
| |CRM1 |SCR1 |SEC65 |SRP14 |SRP21 |SRP54 |SRP68 |YRB2 |
Reviews
| Lewis JD and Tollervey D (2000) Like attracts like: getting RNA processing together in the nucleus. Science 288(5470):1385-9
| |NOP1 |NSR1 |SRP68 |
Function/Process
| Mason N, et al. (2000) Elongation arrest is a physiologically important function of signal recognition particle. EMBO J 19(15):4164-74
| |SRP14 |
DNA/RNA Sequence Features Mutants/Phenotypes Non-Fungal Related Genes/Proteins Protein Physical Properties Protein Sequence Features Protein-protein Interactions Regulatory Role Techniques and Reagents
| Brown JD, et al. (1994) Subunits of the Saccharomyces cerevisiae signal recognition particle required for its functional expression. EMBO J 13(18):4390-400
| |SCR1 |SEC65 |SRP14 |SRP21 |SRP54 |SRP68 |