Добавил:
kiopkiopkiop18@yandex.ru t.me/Prokururor I Вовсе не секретарь, но почту проверяю Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:

Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_5644_Библиотеки_им_академика_М_И_Перельмана

.pdf
Скачиваний:
0
Добавлен:
15.09.2026
Размер:
14 Мб
Скачать
☆
11.2 Regulation and Dysregulation of RNA–Protein Interactions 295
https://t.me/med1917
transcripts harboring a (CUG)n(n = fty to a few thousand) expanded repeat in the 3′UTR [118–122]. In normal cells, DMPK mRNA is transcribed, transported to nuclear speckles, and then exported from the nucleus. The (CUG)
repeats prevent
exp
its entry into nuclear speckles, and instead causes the RNA to accumulate in sepa­rate and distinct nuclear foci, and in the process, sequester the ZnF-containing RBP Muscleblind-like protein 1 (Mbnl1) to those foci. Subsequently, Mbnl1 is prohibited from carrying out its role as an essential regulator of alternative splicing, resulting in many mis-spliced RNAs in DM1. The (CUG)
nuclear foci are suggested to be
exp
the source of pathology in DM1 with an increased number of repeats correlative with disease severity due to enhanced ability to accumulate and recruit more Mbnl1 proteins [123]. This is also a case to exemplify a disease in which the driver of the disease is a toxic gain of function in the RNA, which causes an RBPs’ functions to lead to symptoms rather than the RBP being the main pathological driver.
11.2.4 The RBP is Lost and Wreaks Havoc on the Cell
As mentioned in Section 11.1, localization of an RBP plays a large role in dic­tating which RNAs it may interact with where mis-localization of the RBP will cause adverse eects through binding to o-target RNAs. Various mutations in RRM-containing protein TDP-43 promote mislocalization to subcellular locations in the cytoplasm, while others can cause retention in the nucleus [110, 124, 125]. Previous reports have shown that mutant forms of TDP-43 increased mislocalization to the mitochondria, thereby leading to the repression of the expression of mito­chondrial RNAs [126]. Similarly, the KH domain-containing RBP Src associated in mitosis of 68 kDa (Sam68) undergoes various posttranslational modications, which greatly inuence its biochemical properties, ne tuning its subcellular localization, and ability to interact with signaling proteins and target RNAs. Sam68, an almost exclusively nuclear protein containing a nuclear localization signal, is localized to the cytoplasm in some cells and plays a role in translational regulation of target mRNAs [127, 128]. However, various cancer types show that higher Sam68 expression in the cytoplasm contributes to tumor progression and metastasis [129]. Upregulation and increased cytoplasmic localization of Sam68 signicantly correlate with pathological grade in patients with renal cell carcinoma [130], tumor-nodule metastasis and other outcomes in breast cancer patients [131], and lymph node metastasis in patients with early-stage cervical cancer [131].
11.2.5 RBPs Dictate Which mRNAs are Translated, Favoring their Tox i c Friends
One of the most direct impacts RBPs have on regulating gene expression is through interacting with transcripts in the cytoplasm, where they inuence stability and translational eciency of target RNAs.The dsRBD-containing RBP Staufen1 (Stau1) is a multifunctional protein that regulates all aspects of RNA metabolism; here, we will discuss its role in translation and decay and its contribution to cancer [132]. Stau1 binds to the 5′UTR of target RNAs, simultaneously with the ribosome, and
296 11 RNA–Protein Interactions: A New Approach for Drugging RNA Biology
https://t.me/med1917
transports an mRNA to the site of translation in the rough endoplasmic reticulum to promote protein synthesis [133]. Stau1 can also bind to regulatory motifs in the 3′UTR of transcripts to promote mRNA stabilization, enhancing translation [134]. In undierentiated C2C12 myoblasts, for example, Stau1 directly binds to and sta­bilizes the 3′UTR of Dvl2 mRNA, promoting cell proliferation. During myogen­esis, Stau1 levels become reduced, and along with it the half-life of Dvl2 mRNA, prompting the induction of myogenic dierentiation [135]. Stau1 can also bind to double-stranded regions downstream of the stop codon in the 3′UTR of transcripts, and through direct interaction with the ATP-dependent helicase UPF1 to enhance its activity, promote Stau1-mediated decay [136]. Through these various functions, Stau1 can support cellular proliferation, tumor growth, and metastasis in cancer through stabilization of transcripts promoting those functions such as SIRT1 mRNA [137]. Stau1-mediated decay may also contribute to increased growth of cancer cells through targeting proteins, which act as transcription and tumor suppressors such as ZNF331 [138]. Alternatively, Stau1 has the capacity to be able to inhibit cancer growth by promoting the decay of transcription factors such as RAX2 [139]. Like the previous examples highlighted, the role of Stau1 in disease progression is con­text dependent, stressing the importance of maintaining proper regulation of the broader network of interactions between RNA and RBPs.
11.2.6 RBPs and RNA Become Very Clique-y, Form Their Own Complex and Cause Stress to the Rest of the Cell
The RBP fused in sarcoma (FUS), containing both an RRM and ZnF, is highly mutated in ALS patients, where mutations largely occur in prion-like domains of the protein priming it for aggregation [140]. Furthermore, previous studies have found that while nuclear FUS does not incorporate into stress granules, mutant FUS can bind and sequester nuclear localized FUS to cytoplasmic stress granules [141]. More broadly, many RBPs display a propensity to assemble in membrane-less compartments through the process of liquid–liquid phase separation (LLPS) [142]. These compartments, composed primarily of RBPs and RNAs, are dynamic and reversible and allow for the exchange of macromolecules with their surrounding environment [143]. LLPS particles are often held together by the accumulation of multiple weak interactions between RNAs and RBPs [143–145]. These interactions generally engage the low complexity intrinsically disordered regions that are characteristic of many RBPs. Various RNP complexes, such as the nucleolus, stress granules, P-bodies, paraspeckles, Cajal bodies, and others, are proposed to form following the principles of phase separation [146–149]. In the case of some disease states, LLPS condensates can transition to more viscous states with reduced uidity and even further to more dense pathological aggregates [150, 151]. This is the case for many degenerative brain diseases which are characterized by plaque-like aggregates composed of RBPs. Additionally, many disease-associated RBPs contain disordered prion-like domains, facilitating PPIs and accelerating liquid to solid-phase transitions.
11.3 Experimental Methods to Detect and Screen for Small Molecules that Modulate 297
https://t.me/med1917
11.3 Experimental Methods to Detect and Screen for Small Molecules that Modulate RNA–Protein Interactions
Due to the increasing evidence of RPI dysregulation in diseases, targeting RBPs and RPIs has surfaced as a new subject in RNA-targeted drug discovery [152]. The last two decades have uncovered many networks of RPIs and resulted in the application of existing methods and development of new technologies for detecting and validat­ing RPIs in vitro and in cellulo. Here, we will highlight methods that can be used to detect and validate RPIs, as well as discover small-molecule modulators of RPIs. Examples of hits identied using these approaches will also be discussed and can be found in Table 11.2.
11.3.1 In vitro Fluorescence-Based Assays
Fluorescence-based assays, including uorescence polarization (FP)- and uores­cence resonance energy transfer (FRET)-based methods (Figure 11.10), provide quantitative measures of an RPI resulting in an ability to measure accurate binding anities and determine IC50values for inhibitors. SPR and ITC are also powerful tools for the quantitative characterization of RPIs [153–157]; however, these tech­niques require specialized instrumentation and are not considered high-throughput for inhibitor discovery. FP utilizes a uorophore-labeled biomolecule, in this case a uorescently labeled RNA probe, which tumbles in solution at a rate dependent upon the size of the molecule [157–162]. An RPI is detectable when there are changes in polarization caused by protein binding to the uorescently labeled RNA, slowing the rotation and emitting an FP signal. FRET, on the other hand, utilizes donor and acceptor uorophore pairs where excitation of the donor uo­rophore results in the transfer of energy to the acceptor uorophore when in close proximity [163–165]. In the case of an RPI, the donor and acceptor uorophores are conjugated to the RNA and protein. Both FP and FRET are compatible with high-throughput small-molecule screening and accordingly have been used to identify inhibitors of RPIs. Select examples of RBP-binding compounds discovered using these approaches include multiple inhibitors of Lin28 [164, 166] binding to pre-let-7 substrates and disrupters of the binding of Msi1/2 [167] and eIF4E [168] to RNAs comprising consensus binding sequences (Table 11.2).
11.3.2 In vitro Chemiluminescence-Based Assays
Although robust and high-throughput, uorescence-based assays are prone to compound interference by autouorescent molecules or compounds that can function as uorescence quenchers [169]. To overcome these limitations, chemiluminescence-based detection assays for RPIs have been developed, includ­ing catalytic enzyme-linked click chemistry assay (cat-ELCCA) and split enzyme assay (SEA) technology (Figure 11.11) [170, 171]. Both of these methods are plate
298 11 RNA–Protein Interactions: A New Approach for Drugging RNA Biology
https://t.me/med1917
Table 11.2 Select examples of RBP-binding compounds discovered using assays mentioned in Sections 11.3.1–11.3.2.
Compound Structure Target Activity Assay
PH-43
Ro 08-2750
eFFECTOR 634
compound 1
OHC
MeN
S
N
O
HO
N
O
O
OH
CO2H
Lin28 IC50:5μM
Kd:16μM
Msi2 IC50:2.7μM
N
N
N
CN
N
F
C
3
NH
O
O
N
N
HO2C
O
Me
Kd:11μM
Cl
O
S
eIF4E 5.6 μM FP
Me
N
CO2H
Lin28 IC50:4μM
FP
FP
FRET
Kd:3.5μM
N
O2N
N
CCG-233094
based, amenable for high-throughput screening, and rely on click chemistry-based detection strategies.
Cat-ELCCA has been applied to multiple biochemical systems, including moni­toring the enzymatic activities of ghrelin O-acyltransferase (GOAT) [172] and Dicer [173–175], and biomolecular interactions including RPIs (e.g. Lin28-pre-let-7 inter­action [176]) and PPIs (e.g. eIF4E-4E-BP1 PPI [177]). For RPIs, a biotinylated-RBP
Me
O
O
O O
S
N
N H
HN
N O
F
S
O O
Me
Lin28 IC50:8.3μM
Kd: 300 nM
cat-ELCCA
11.3 Experimental Methods to Detect and Screen for Small Molecules that Modulate 299
https://t.me/med1917
Fluorescence Polarization (FP)
F
Acceptor
Fluorophore
Emission
+
Polarized Light ­Signal Detected
Depolarized
Light - No Signal
FRET Signal
D
No FRET Signal
Detected
F
RNA +
Fluorophore
+
RBP
No Inhibitor
+ Inhibitor
Fluorescence Resonance Energy Transfer (FRET)
A
RNA +
Acceptor
Fluorophore
+
+ Donor
Fluorophore
D
RBP
No Inhibitor
+ Inhibitor
F
Slow Rotation
+
Fast Rotation
D
A
A
Figure 11.10 Schematic representation of fluorescence polarization and fluorescence resonance energy transfer assays to detect RPIs and their inhibition. Figure created in BioRender.
Catalytic Enzyme Linked Click Chemistry Assay (cat-ELCCA)
HRP
RBP + Biotin
+
+
RNA
5′-trans-
cyclooctene
SmBiT
mTet
TCO
RNA +
Streptavidin­Coated Well
Split Enzyme Assay (SEA)
LgBiT
RBP
TCO
HaloTag
No Inhibitor
+ Inhibitor
No Inhibitor
+ Inhibitor
+
TCO
+
mTet
NanoBiT Enzyme
Click
+
mTet
Wash
Wash
NanoBiT
Substrate
Click
Click
Catalytic Chemiluminescent
Signal
No Signal
Chemiluminescent
Signal
NanoBiT
Substrate
No Signal
Figure 11.11 Schematic representation of catalytic enzyme linked click chemistry assay and split enzyme assay to detect RPIs and their inhibition. Figure created in BioRender.
is immobilized onto a streptavidin-coated well plate and treated with an RNA substrate harboring a trans-cyclooctene (TCO) click chemistry handle. Signal is generated in this assay when the TCO-labeled RNA becomes covalently conjugated to a methyltetrazine (mTet)-functionalized horseradish peroxidase (HRP) via inverse-electron demand Diels–Alder-based click chemistry. Chemiluminescence results after the addition of an HRP substrate. Key advantages of cat-ELCCA are enhanced sensitivity due to catalytic signal amplication and minimal compound interference compared to uorescence-based detection assays. Using this strategy, a high-throughput screen was conducted against the pre-let-7-Lin28 RPI resulting in the discovery of a novel Lin28 inhibitory scaold (Table 11.2) [176]. There are, however, a couple of limitations to this approach including the use of costly
300 11 RNA–Protein Interactions: A New Approach for Drugging RNA Biology
https://t.me/med1917
streptavidin-coated plates needed for protein immobilization and the multiple washing steps required throughout the assay protocol. This ultimately led to the development of a second click chemistry-based biorthogonal assay.
SEA is a protein complementation-based assay that utilizes a split luciferase that is able to produce catalytic signal amplication following interaction between a tar­get RNA and RBP [171]. The split NanoLuc Binary Technology (NanoBiT) system from Promega is comprised of an 18 kDa larger subunit as well as an 11 amino acid peptide making up the small subunit (SmBiT) [178]. These two components were intentionally engineered to have low anity for each other with a Kdof 190 μM, allowing for the components conjugated to these two subunits to be the main driver of interaction [178]. Like cat-ELCCA, SEA also uses a TCO-labeled RNA. LgBiT is fused to the RBP of interest, while SmBiT contains the mTet modication, which is appended via conjugation to HaloTag [179]. Signal results when the RBP binds to the target RNA following a covalent click chemistry reaction between the TCO and mTet components, placing SmBiT and LgBiT in close enough proximity to assemble the active NanoBiT enzyme which produces a chemiluminescent signal following treatment with NanoLuc substrate. SEA has been utilized to detect RPIs in 384-well plate format with robust assay statistics and was further able to detect inhibition by a small molecule (CCG-233094 in Table 11.2) without the need to wash away unbound species due to the low inherent anity of the NanoBiT subunits [171].
11.3.2.1 Cell-Based RPI Detection Assays
While enabling assay technologies, in vitro methods come with a major drawback as they do not assess how RBPs behave in cells or how they may interact with RNAs in cells due to the absence of post-translational modications or other protein­binding partners present in the native cellular environment [169, 180, 181]. Indeed, many RBPs function in complexes containing multiple RPIs or PPIs that facilitate the interaction between the RNA and RBP [180]. This biological complexity necessitates the need for cell-based methods to detect specic RPIs that are also amenable to high-throughput experimentation and are reversible to allow for the identication of inhibitors of the interaction. Cell-based platforms for detecting and screening RPIs also come with an additional advantage in that they also allow for simultaneous assessment of cellular permeability, activity, and cytotoxicity.
Cell-based FRET and uorescence in situ hybridization (FISH) coupled with immunouorescence have broad applications and can be used to demonstrate interaction and co-localization of an RNA and RBP [182–184]. However, FRET, in addition to the limitations in uorescence-based methods already discussed, is also highly dependent upon the ratios of the interacting partners to produce a signal. Additionally, for these imaging-based methods to be made high-throughput, highly specialized and expensive high-content imaging equipment is necessary. With FISH coupled with immunouorescence specically,there is no evidence of a direct inter­action between an RNA and protein, just co-localization of the components [185]. These methods also typically require cell xation and permeabilization to be used with antibodies, making them not suitable for high-throughput experimentation. Furthermore, only a fraction of RBPs have validated antibodies for use, making
11.3 Experimental Methods to Detect and Screen for Small Molecules that Modulate 301
https://t.me/med1917
Trimolecular Fluorescence Complementation (TriFC) Assay RNA Fluorescent three-Hybrid (rF3H)
Ex. Em.
MS2CP
MS2 Hairpins RNA Target
Fluorescence Based RPI Detection in Cells
Reconstituted
Split
Fluorophore
RBP
Co-Localization
GFP
Lacl
Multiple lacO Clusters
MS2CP
MS2 Hairpin
RFP
RBP
RNA
Figure 11.12 Schematic representation of trimolecular fluorescence complementation assay and RNA fluorescent three-hybrid assay to detect RPIs in a cell-based setting. Figure created in BioRender.
these approaches not ideal or maybe even not an option for the detection of poorly characterized RPIs [186].
Additional methods include the trimolecular uorescence complementation (TriFC) assay and RNA uorescent three-hybrid (rF3H) assay (Figure 11.12). TriFC, originally established for the visualization of cellular PPIs, utilizes a split uorophore as the detection method, brought together by other interacting units [187–190]. In this case, an RNA target sequence is appended to the sequence coding for the MS2 hairpin RNA. The RNA bacteriophage MS2 coat protein (MS2CP), which binds to the MS2 hairpin RNA, is fused to a portion of a split uorophore [191]. The RBP-of-interest is fused to the second half of the split uorophore. When the RBP binds to the RNA target adjacent to the MS2 hairpin RNA, the uorophore is reconstituted and will exhibit a uorescence signal at its specic excitation and emission wavelength, driven by the RPI. This assay has not been used for screening inhibitors likely due to the irreversibility of the complementation between the uo­rophore protein fragments leading to high background and resulting in an inability of this method to measure RPI dynamics [192]. In rF3H, an MS2 stem-loop-labeled RNA (similar to that used in TriFC) is anchored to a specic locus by a fusion protein containing the MS2CP, a GFP, and an anchoring protein. Specic anchor proteins may direct the locus of the trap, with LacI binding to an integrated lab operon shown as an example in Figure 11.12. Other loci include the Lamin B1 anchor localizing to the nuclear lamina or the Coilin protein localizing to Cajal bodies [193]. Interaction of the RBP fused to another uorescent protein (RFP) with the RNA target will give insight into co-localization of the protein to that specic cellular compartment. This method, while not advantageous for screening, could be useful for signal detection for certain disease contexts by enrichment of signal at a specic locus.
11.3.3 Cell-Based RNA–Protein Interaction Screening
The limitations observed with in vitro small molecule screening, coupled with the absence of cell-based screening methods for RPIs, led to the development of additional cell-based RPI assays. RNA interaction with protein-mediated comple­mentation assay (RiPCA; Figure 11.13), in similar manner to cat-ELCCA and SEA, leverages biorthogonal chemistry strategies for the detection of specic interactions
302 11 RNA–Protein Interactions: A New Approach for Drugging RNA Biology
https://t.me/med1917
RNA-interaction with Protein-mediated Complementation Assay (RiPCA)
SmBiT-
Cytoplasm
HaloTag
Nucleus
RBP-
LgBiT
Transfect
RBP-
LgBiT
RBP
LgBiT
SmBiT
HaloTag
Transfect
No Inhibitor
+
Cl
+ Inhibitor
RNA + Chloroalkane
Cl
NanoBiT Enzyme
NanoBiT
Substrate
Chemiluminescent
NanoBiT
Substrate
Signal
No Signal
Figure 11.13 Schematic representation of RNA interaction with protein-mediated complementation assay to detect RPIs in the presence of an inhibitor and without in a cell-based setting. Figure created in BioRender.
[194–196]. The RBP-of-interest is fused to the LgBiT subunit, while the SmBiT is fused to HaloTag (HT). Flp-In HEK293T cells are engineered to stably express the SmBiT-HT fusion protein, which are subsequently transiently transfected with a plasmid encoding the RBP fused to LgBiT. The RNA, functionalized with a PEGylated chloroalkane substrate for conjugation to HT, is co-transfected alongside the RBP-LgBiT. Signal is detected following HT covalently modifying the RNA target and the RBP binding to the RNA, bringing LgBiT and SmBiT in proximity to interact and form the catalytically active NanoLuc enzyme, which results in the production of chemiluminescent signal following treatment with NanoLuc substrate. Carried out in this way, a new cell line does not need to be generated for each RBP- or RPI-of-interest, rather, a dierent RBP would just need to be cloned into the plasmid-containing LgBiT. RiPCA is suitable for screening to identify inhibitors of an RPI, is amenable to high-throughput experimentation, and results in sensitive signal generated by the complex that is stabilized by the covalent bond between HT and the RNA. Additionally, the cells are not lysed or permeabilized to allow for signal detection because RiPCA uses Promega’s Live-Cell NanoBiT detection reagent. Some limitations to this approach include potential issues with overexpression of the RBP because it is transiently transfected through the plasmid on top of endogenous expression. Moreover, the RNA must be generated through chemical synthesis due to requirement of a site-specic nucleobase modication for coupling to the chloroalkane handle for HT conjugation, limiting the length of RNA that can be used due to limitations of RNA chemical synthesis.
11.4 Closing Remarks
Sequencing of the human genome catalyzed expanded exploration of RNA biology. From these investigations, we have come to appreciate not only the complexity and signicance of cellular RNAs but also how entangled the cellular lifecycle of an RNA is with a cadre of regulatory proteins. As we continue to push the boundaries of drug discovery toward the targeting of historically dicult-to-drug areas of biology, RNAs and RPIs have emerged as exciting challenges for the eld of medicinal chemistry. In learning more about RBPs and RPIs, we hope that new insights will be gleaned with respect to molecular recognition principles for binding
References 303
https://t.me/med1917
to RNAs that can be applied toward our pursuit of developing small molecule-based, RNA-targeted therapeutics, as well as reveal new mechanisms for impacting RNA biology in disease states for the development of next-generation medicines.
References
1 Lunde, B.M., Moore, C., and Varani, G. (2007). RNA-binding proteins: modular
design for ecient function. Nat Rev Mol Cell Biol. 8 (6): 479–490. https://doi .org/10.1038/nrm2178. PubMed PMID: 17473849; PMCID: PMC5507177.
2 Murzin, A.G., Brenner, S.E., Hubbard, T., and Chothia, C. (1995). SCOP: a
structural classication of proteins database for the investigation of sequences and structures. J Mol Biol. 247 (4): 536–540. https://doi.org/10.1006/jmbi.1995 .0159. PubMed PMID: 7723011.
3 Letunic, I., Doerks, T., and Bork, P. (2009). SMART 6: recent updates and
new developments. Nucleic Acids Res. 37 (Database issue): D229–D232. Epub
20081031. https://doi.org/10.1093/nar/gkn808. PubMed PMID: 18978020; PMCID: PMC2686533.
4 Finn, R.D., Mistry, J., Tate, J. et al. (2010). The Pfam protein families database.
Nucleic Acids Res. 38 (Database issue): D211–D222. Epub 20091117. https://doi .org/10.1093/nar/gkp985. PubMed PMID: 19920124; PMCID: PMC2808889.
5 Wilson, D., Pethica, R., Zhou, Y. et al. (2009). SUPERFAMILY--sophisticated
comparative genomics, data mining, visualization and phylogeny. Nucleic Acids Res. 37 (Database issue): D380–D386. Epub 20081126. https://doi.org/10.1093/ nar/gkn762. PubMed PMID: 19036790; PMCID: PMC2686452.
6 Marchler-Bauer, A., Zheng, C., Chitsaz, F. et al. (2013). CDD: conserved
domains and protein three-dimensional structure. Nucleic Acids Res. 41 (Database issue): D348–D352. Epub 20121128. https://doi.org/10.1093/nar/ gks1243. PubMed PMID: 23197659; PMCID: PMC3531192.
7 McKee, A.E., Minet, E., Stern, C. et al. (2005). A genome-wide in situ
hybridization map of RNA-binding proteins reveals anatomically restricted expression in the developing mouse brain. BMC Dev Biol. 5 (14) Epub
20050720. https://doi.org/10.1186/1471-213X-5-14: PubMed PMID: 16033648; PMCID: PMC1199591.
8 Galante, P.A., Sandhu, D., de Sousa, A.R. et al. (2009). A comprehensive in
silico expression analysis of RNA binding proteins in normal and tumor tissue: Identication of potential players in tumor formation. RNA Biol. 6 (4): 426–433. Epub 20090924. https://doi.org/10.4161/rna.6.4.8841. PubMed PMID: 19458496; PMCID: PMC2935330.
9 Anantharaman, V., Koonin, E.V., and Aravind, L. (2002). Comparative genomics
and evolution of proteins involved in RNA metabolism. Nucleic Acids Res. 30 (7): 1427–1464. https://doi.org/10.1093/nar/30.7.1427. PubMed PMID: 11917006; PMCID: PMC101826.
10 Corley, M., Burns, M.C., and Yeo, G.W. (2020). How RNA-binding proteins
interact with RNA: molecules and mechanisms. Mol Cell. 78 (1): 9–29. https://
304 11 RNA–Protein Interactions: A New Approach for Drugging RNA Biology
https://t.me/med1917
doi.org/10.1016/j.molcel.2020.03.011. PubMed PMID: 32243832; PMCID: PMC7202378.
11 McHugh, C.A., Russell, P. , and Guttman, M. (2014). Methods for comprehen-
sive experimental identication of RNA-protein interactions. Genome Biol. 15 (1): 203. Epub 20140127. https://doi.org/10.1186/gb4152. PubMed PMID: 24467948; PMCID: PMC4054858.
12 Van Nostrand, E.L., Freese, P., Pratt, G.A. et al. (2020). A large-scale bind-
ing and functional map of human RNA-binding proteins. Nature. 583 (7818): 711–719. https://doi.org/10.1038/s41586-020-2077-3 .
13 Dreyfuss, G., Kim, V.N., and Kataoka, N. (2002). Messenger-RNA-binding
proteins and the messages they carry. Nat Rev Mol Cell Biol. 3 (3): 195–205. https://doi.org/10.1038/nrm760. PubMed PMID: 11994740.
14 Clery, A., Blatter, M., and Allain, F.H. (2008). RNA recognition motifs: boring?
Not quite. Curr Opin Struct Biol. 18 (3): 290–298. https://doi.org/10.1016/j.sbi .2008.04.002. PubMed PMID: 18515081.
15 Banerjee, S. and Barraud, P. (2014). Functions of double-stranded RNA-binding
domains in nucleocytoplasmic transport. RNA Biol. 11 (10): 1226–1232. https:// doi.org/10.4161/15476286.2014.972856. PubMed PMID: 25584639; PMCID: PMC4615638.
16 Hall, T.M. (2005). Multiple modes of RNA recognition by zinc nger proteins.
Curr Opin Struct Biol. 15 (3): 367–373. https://doi.org/10.1016/j.sbi.2005.04.004. PubMed PMID: 15963892.
17 Valverde, R., Edwards, L., and Regan, L. (2008). Structure and function of KH
domains. FEBS J. 275 (11): 2712–2726. Epub 20080415. https://doi.org/10.1111/j .1742-4658.2008.06411.x. PubMed PMID: 18422648.
18 Antoine Cléry FH-TA (2000-2013). From Structure to Function of RNA Binding
Domains. Austin (TX): Landes Bioscience.
19 Jankowsky, E. and Harris, M.E. (2015). Specicity and nonspecicity in
RNA–protein interactions. Nature Reviews Molecular Cell Biology. 16 (9): 533–544. https://doi.org/10.1038/nrm4032.
20 Jonas, S. and Izaurralde, E. (2013). The role of disordered protein regions in
the assembly of decapping complexes and RNP granules. Genes Dev. 27 (24): 2628–2641. https://doi.org/10.1101/gad.227843.113. PubMed PMID: 24352420; PMCID: PMC3877753.
21 Teplova, M., Malinina, L., Darnell, J.C. et al. (2011). Protein-RNA and
protein-protein recognition by dual KH1/2 domains of the neuronal splicing factor Nova-1. Structure. 19 (7): 930–944. https://doi.org/10.1016/j.str.2011.05 .002. PubMed PMID: 21742260; PMCID: PMC3134789.
22 Cienikova, Z., Jayne, S., Damberger, F.F. et al. (2015). Evidence for coopera-
tive tandem binding of hnRNP C RRMs in mRNA processing. RNA 21 (11): 1931–1942. Epub 20150914. https://doi.org/10.1261/rna.052373.115. PubMed PMID: 26370582; PMCID: PMC4604433.
23 MacNicol, A.M., Wilczynska, A., and MacNicol, M.C. (2008). Function and reg-
ulation of the mammalian Musashi mRNA translational regulator. Biochem Soc