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UniProtKB/Swiss-Prot P52732: Variant p.Arg944Cys

Kinesin-like protein KIF11
Gene: KIF11
Variant information

Variant position:  944
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:  Disease [Disclaimer]
The variants are classified into three categories: Disease, Polymorphism and Unclassified.
  • Disease: Variants implicated in disease according to literature reports.
  • Polymorphism: Variants not reported to be implicated in disease.
  • Unclassified: Variants with uncertain implication in disease according to literature reports. Evidence against or in favor of a pathogenic role is limited and/or conflicting.

Residue change:  From Arginine (R) to Cysteine (C) at position 944 (R944C, p.Arg944Cys).
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 (C)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -3
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

Involvement in disease:  Microcephaly with or without chorioretinopathy, lymphedema, or mental retardation (MCLMR) [MIM:152950]: An autosomal dominant disorder that involves an overlapping but variable spectrum of central nervous system and ocular developmental anomalies. Microcephaly ranges from mild to severe and is often associated with mild to moderate developmental delay and a characteristic facial phenotype with upslanting palpebral fissures, broad nose with rounded tip, long philtrum with thin upper lip, prominent chin, and prominent ears. Chorioretinopathy is the most common eye abnormality, but retinal folds, microphthalmia, and myopic and hypermetropic astigmatism have also been reported, and some individuals have no overt ocular phenotype. Congenital lymphedema, when present, is typically confined to the dorsa of the feet, and lymphoscintigraphy reveals the absence of radioactive isotope uptake from the webspaces between the toes. {ECO:0000269|PubMed:22284827}. Note=The disease is caused by mutations affecting the gene represented in this entry.
The name and a short description of the disease associated with the variant. For more information about the disease, the user can refer to OMIM, following the link provided after the disease acronym.

Variant description:  In MCLMR.
Any additional useful information about the variant.

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



Sequence information

Variant position:  944
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  1056
The length of the canonical sequence.

Location on the sequence:   GTTPQRKSYLYPSTLVRTEP  R EHLLDQLKRKQPELLMMLNC
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: 
The multiple alignment of the region surrounding the variant against various orthologous sequences.

Human                         GTTPQRKSYLYPSTLVRTEPREHLLDQLKRKQPELLMMLNC

Mouse                         GMTPERKKYLYPTTLVRTEPREQLLDQLQKKQPPMMLNSSE

Xenopus tropicalis            GTTPQRRDYVYPSLLVRTKPRDVLLEQFRQQQQEYLESISS

Slime mold                    --------------------KDEKISSLESKLRDILLKFKQ

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 – 1056 Kinesin-like protein KIF11
Modified residue 925 – 925 Phosphothreonine
Modified residue 926 – 926 Phosphothreonine; by CDK1
Mutagenesis 926 – 926 T -> A. No mitotic phosphorylation. No binding to spindle apparatus.


Literature citations

Mutations in KIF11 cause autosomal-dominant microcephaly variably associated with congenital lymphedema and chorioretinopathy.
Ostergaard P.; Simpson M.A.; Mendola A.; Vasudevan P.; Connell F.C.; van Impel A.; Moore A.T.; Loeys B.L.; Ghalamkarpour A.; Onoufriadis A.; Martinez-Corral I.; Devery S.; Leroy J.G.; van Laer L.; Singer A.; Bialer M.G.; McEntagart M.; Quarrell O.; Brice G.; Trembath R.C.; Schulte-Merker S.; Makinen T.; Vikkula M.; Mortimer P.S.; Mansour S.; Jeffery S.;
Am. J. Hum. Genet. 90:356-362(2012)
Cited for: VARIANTS MCLMR LEU-144; CYS-234; CYS-235 AND CYS-944;

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.