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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q96E22: Variant p.Arg290His

Dehydrodolichyl diphosphate synthase complex subunit NUS1
Gene: NUS1
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Variant information Variant position: help 290 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help 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: help From Arginine (R) to Histidine (H) at position 290 (R290H, p.Arg290His). 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: help 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: help 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: help In CDG1AA; loss of function in protein glycosylation; 5-fold reduction in catalytic activity and reduced affinity for FPP and IPP.. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 290 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 293 The length of the canonical sequence.
Location on the sequence: help LNISYEDFFSALRQYAACEQ R LGK 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.
Residue conservation: help The multiple alignment of the region surrounding the variant against various orthologous sequences.
Human                         LNISYEDFFSALRQYAACEQRLGK

Mouse                         LNISYEDFFSALRQYAACEQRLGK

Zebrafish                     IDASYDDLYDALQRFAGCEQRLGK

Sequence annotation in neighborhood: help 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 – 293 Dehydrodolichyl diphosphate synthase complex subunit NUS1
Motif 290 – 292 RXG motif; crucial for prenyltransferase activity
Binding site 291 – 291
Binding site 292 – 292
Glycosylation 271 – 271 N-linked (GlcNAc...) asparagine
Mutagenesis 292 – 292 G -> A. Almost complete loss of catalytic activity.
Mutagenesis 293 – 293 K -> KA. Almost complete loss of catalytic activity.
Mutagenesis 293 – 293 Missing. Almost complete loss of catalytic activity.



Literature citations
Mutation of Nogo-B receptor, a subunit of cis-prenyltransferase, causes a congenital disorder of glycosylation.
Park E.J.; Grabinska K.A.; Guan Z.; Stranecky V.; Hartmannova H.; Hodanova K.; Baresova V.; Sovova J.; Jozsef L.; Ondruskova N.; Hansikova H.; Honzik T.; Zeman J.; Hulkova H.; Wen R.; Kmoch S.; Sessa W.C.;
Cell Metab. 20:448-457(2014)
Cited for: INVOLVEMENT IN CDG1AA; VARIANT CDG1AA HIS-290; CHARACTERIZATION OF VARIANT CDG1AA HIS-290; CATALYTIC ACTIVITY; FUNCTION; SUBUNIT; PATHWAY; A conserved C-terminal RXG motif in the NgBR subunit of cis-prenyltransferase is critical for prenyltransferase activity.
Grabinska K.A.; Edani B.H.; Park E.J.; Kraehling J.R.; Sessa W.C.;
J. Biol. Chem. 292:17351-17361(2017)
Cited for: CATALYTIC ACTIVITY; FUNCTION; BIOPHYSICOCHEMICAL PROPERTIES; SUBUNIT; MUTAGENESIS OF HIS-100; GLY-292 AND LYS-293; ACTIVITY REGULATION; CHARACTERIZATION OF VARIANT HIS-290; PATHWAY; COFACTOR;
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.