Protein Name:
Nuclear cap-binding protein subunit 1
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UniprotKB/SwissProt ID: Q9SIU2 (Q9SIU2)
Gene Name:
ABH1
Organism: Arabidopsis thaliana (Mouse-ear cress)
Function: Component of the cap-binding complex (CBC), which binds cotranscriptionally to the 5'-cap of pre-mRNAs and is involved in various processes such as pre-mRNA splicing and RNA-mediated gene silencing (RNAi) by microRNAs (miRNAs). The CBC complex is involved in miRNA-mediated RNA interference and is required for primary miRNA processing. In the CBC complex, ABH1/CBP80 does not bind directly capped RNAs (m7GpppG-capped RNA) but is required to stabilize the movement of the N-terminal loop of CBP20 and lock the CBC into a high affinity cap-binding state with the cap structure. Involved in flowering regulation, possibly by regulating pre-mRNA splicing of FLC gene. Acts as a negative regulator of abscisic acid signaling in guard cells
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Nucleus. Cytoplasm
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Graphical Visualization of S-nitrosylation Sites:
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The S-nitrosylation sites of Q9SIU2
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| No. |
Position |
S-nitrosylated Peptide |
Secondary Structure of S-nitrosylated Peptide |
Solvent Accessibility of nitrosylated Site |
PubMed ID |
| 1 |
261 |
GKFHELRPIK C MEQPSPPSDH |
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