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Crystal structure of Prp8:Aar2 complex
Annotation data related to this entry.
4I43
  •   Protein Family Annotation: Pfam Classification   Hide
    Chain Pfam Accession Pfam Family Identifier Pfam Description Type Comment
    B PF10598   RRM_4 RNA recognition motif of the spliceosomal PrP8 Domain The large RNA-protein complex of the spliceosome catalyses pre-mRNA splicing. One of the most conserved core proteins is PrP8 which occupies a central position in the catalytic core of the spliceosome, and has been implicated in several crucial molecular rearrangements that occur there, and has recently come under the spotlight for its role in the inherited human disease, Retinitis Pigmentosa [1]. The RNA-recognition motif of PrP8 is highly conserved and provides a possible RNA binding centre for the 5-prime SS, BP, or 3-prime SS of pre-mRNA which are known to contact with Prp8. The most conserved regions of an RRM are defined as the RNP1 and RNP2 sequences. Recognition of RNA targets can also be modulated by a number of other factors, most notably the two loops beta1-alpha1, beta2-beta3 and the amino acid residues C-terminal to the RNP2 domain [2]. Source: Pfam  
    A PF05282   AAR2 AAR2 protein Family
    B PF08084   PROCT PROCT (NUC072) domain Domain The PROCT domain is the C-terminal domain in pre-mRNA splicing factors of PRO8 family [1]. Source: Pfam  
    B PF10596   U6-snRNA_bdg U6-snRNA interacting domain of PrP8 Domain This domain incorporates the interacting site for the U6-snRNA as part of the U4/U6.U5 tri-snRNPs complex of the spliceosome, and is the prime candidate for the role of cofactor for the spliceosome's RNA core. The essential spliceosomal protein Prp8 interacts with U5 and U6 snRNAs and with specific pre-mRNA sequences that participate in catalysis. This close association with crucial RNA sequences, together with extensive genetic evidence, suggests that Prp8 could directly affect the function of the catalytic core, perhaps acting as a splicing cofactor [1]. Source: Pfam  
    B PF12134   PRP8_domainIV PRP8 domain IV core Domain This domain is found in eukaryotes, and is about 20 amino acids in length. It is found associated with Pfam:PF10597, Pfam:PF10596, Pfam:PF10598, Pfam:PF08083, Pfam:PF08082, Pfam:PF01398, Pfam:PF08084. There is a conserved LILR sequence motif. The domain is a selenomethionine domain in a subunit of the spliceosome. The function of PRP8 domain IV is believed to be interaction with the splicosomal core. Source: Pfam  
    B PF10597   U5_2-snRNA_bdg U5-snRNA binding site 2 of PrP8 Domain The essential spliceosomal protein Prp8 interacts with U5 and U6 snRNAs and with specific pre-mRNA sequences that participate in catalysis [1]. This close association with crucial RNA sequences, together with extensive genetic evidence, suggests that Prp8 could directly affect the function of the catalytic core, perhaps acting as a splicing cofactor [2]. Source: Pfam  
     
  •   Gene Product Annotation: GO Terms   Hide
    Polymer Molecular Function Biological Process Cellular Component
    A1 cistron-splicing factor AAR2 (4I43:A)
    Pre-mRNA-splicing factor 8 (4I43:B)
     
  •   Structural Biology Knowledgebase Data Hide
     
 
Annotations in orange boxes have been gathered from external resources.