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UniProtKB/Swiss-Prot O43172: Variant p.Arg192His

U4/U6 small nuclear ribonucleoprotein Prp4
Gene: PRPF4
Variant information

Variant position:  192
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  LP/P [Disclaimer]
The variants are classified into three categories: LP/P, LB/B and US.
  • LP/P: likely pathogenic or pathogenic.
  • LB/B: likely benign or benign.
  • US: uncertain significance

Residue change:  From Arginine (R) to Histidine (H) at position 192 (R192H, p.Arg192His).
Indicates the amino acid change of the variant. The one-letter and three-letter codes for amino acids used in UniProtKB/Swiss-Prot are those adopted by the commission on Biochemical Nomenclature of the IUPAC-IUB.

Physico-chemical properties:  Change from large size and basic (R) to medium size and polar (H)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  0
The score within a Blosum matrix for the corresponding wild-type to variant amino acid change. The log-odds score measures the logarithm for the ratio of the likelihood of two amino acids appearing by chance. The Blosum62 substitution matrix is used. This substitution matrix contains scores for all possible exchanges of one amino acid with another:
  • Lowest score: -4 (low probability of substitution).
  • Highest score: 11 (high probability of substitution).
More information can be found on the following page

Variant description:  In RP70; does not affect nuclear speck localization; disrupts interaction with PRPF3; does not affect interaction with PPIH; does not integrated in spliceosomal snRNP complex.
Any additional useful information about the variant.

Other resources:  
Links to websites of interest for the variant.



Sequence information

Variant position:  192
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  522
The length of the canonical sequence.

Location on the sequence:   NSLKVARLWIANYSLPRAMK  R LEEARLHKEIPETTRTSQMQ
The residue change on the sequence. Unless the variant is located at the beginning or at the end of the protein sequence, both residues upstream (20) and downstream (20) of the variant will be shown.

Sequence annotation in neighborhood:  
The regions or sites of interest surrounding the variant. In general the features listed are posttranslational modifications, binding sites, enzyme active sites, local secondary structure or other characteristics reported in the cited references. The "Sequence annotation in neighborhood" lines have a fixed format:
  • Type: the type of sequence feature.
  • Positions: endpoints of the sequence feature.
  • Description: contains additional information about the feature.

TypePositionsDescription
Chain 1 – 522 U4/U6 small nuclear ribonucleoprotein Prp4
Mutagenesis 192 – 192 R -> E. Decreases PRPF3 binding.
Mutagenesis 192 – 192 R -> K. Decreases PRPF3 binding.
Mutagenesis 192 – 192 R -> W. Decreases PRPF3 binding.


Literature citations

Identification of a PRPF4 loss-of-function variant that abrogates U4/U6.U5 tri-snRNP integration and is associated with retinitis pigmentosa.
Linder B.; Hirmer A.; Gal A.; Ruether K.; Bolz H.J.; Winkler C.; Laggerbauer B.; Fischer U.;
PLoS ONE 9:E111754-E111754(2014)
Cited for: VARIANT RP70 HIS-192; CHARACTERIZATION OF VARIANT RP70 HIS-192; INTERACTION WITH PRPF3 AND PPIH; MUTAGENESIS OF ARG-192; FUNCTION; SUBCELLULAR LOCATION;

Disclaimer: Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. They are not in any way intended to be used as a substitute for professional medical advice, diagnostic, treatment or care.