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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P32004: Variant p.His210Gln

Neural cell adhesion molecule L1
Gene: L1CAM
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Variant information Variant position: help 210 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 Histidine (H) to Glutamine (Q) at position 210 (H210Q, p.His210Gln). 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 Similar physico-chemical property. Both residues are medium size and polar. 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 MASA; decrease in cell-matrix adhesion; decreased cell migration; loss of axon guidance and of proper synapse formation, when assayed in a heterologous system; no effect on the localization at the cell surface; no effect on cell proliferation, when transfected in pheochromocytoma PC12 cells; no effect on neurite outgrowth, when assayed in NGF-treated pheochromocytoma PC12 cells. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 210 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 1257 The length of the canonical sequence.
Location on the sequence: help NGNLYFANVLTSDNHSDYIC H AHFPGTRTIIQKEPIDLRVK 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                         NGNLYFANVLTSDNHSDYICHAHFPGTRTIIQKEPIDLRVK

Mouse                         NGDLYFANVLTSDNHSDYICNAHFPGTRTIIQKEPIDLRVK

Rat                           NGDLYFANVLTSDNHSDYICNAHFPGTRTIIQKEPIDLRVK
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 20 – 1257 Neural cell adhesion molecule L1
Topological domain 20 – 1120 Extracellular
Domain 139 – 226 Ig-like C2-type 2
Glycosylation 203 – 203 N-linked (GlcNAc...) asparagine



Literature citations
X-linked spastic paraplegia (SPG1), MASA syndrome and X-linked hydrocephalus result from mutations in the L1 gene.
Jouet M.; Rosenthal A.; Armstrong G.; Macfarlane J.; Stevenson R.; Paterson J.; Metzenberg A.; Ionasescu V.; Temple K.; Kenwrick S.;
Nat. Genet. 7:402-407(1994)
Cited for: INVOLVEMENT IN MASA; INVOLVEMENT IN HYCX; VARIANTS HYCX GLN-184 AND ARG-452; VARIANT MASA GLN-210; MASA syndrome is due to mutations in the neural cell adhesion gene L1CAM.
Vits L.; van Camp G.; Coucke P.; Fransen E.; de Boulle K.; Reyniers E.; Korn B.; Poustka A.; Wilson G.; Schrander-Stumpel C.; Winter R.M.; Schwartz C.; Willems P.J.;
Nat. Genet. 7:408-413(1994)
Cited for: VARIANTS MASA GLN-210 AND ASN-598; CRASH syndrome: clinical spectrum of corpus callosum hypoplasia, retardation, adducted thumbs, spastic paraparesis and hydrocephalus due to mutations in one single gene, L1.
Fransen E.; Lemmon V.; van Camp G.; Vits L.; Coucke P.; Willems P.J.;
Eur. J. Hum. Genet. 3:273-284(1995)
Cited for: VARIANTS HYCX GLN-184; TYR-264; ARG-452 AND LEU-1194; VARIANTS MASA GLN-210; ASN-598 AND LEU-1194; L1CAM and its cell-surface mutants: new mechanisms and effects relevant to the physiology and pathology of neural cells.
Tagliavacca L.; Colombo F.; Racchetti G.; Meldolesi J.;
J. Neurochem. 124:397-409(2013)
Cited for: CHARACTERIZATION OF VARIANTS MASA GLN-210 AND LYS-309; CHARACTERIZATION OF VARIANTS HYCX THR-219 AND CYS-264; CHARACTERIZATION OF VARIANT HYCX/MASA LEU-941; SUBCELLULAR LOCATION; Differential effects of human L1CAM mutations on complementing guidance and synaptic defects in Drosophila melanogaster.
Kudumala S.; Freund J.; Hortsch M.; Godenschwege T.A.;
PLoS ONE 8:E76974-E76974(2013)
Cited for: CHARACTERIZATION OF VARIANT VAL-120; CHARACTERIZATION OF VARIANTS MASA GLN-210 AND LYS-309; CHARACTERIZATION OF VARIANTS HYCX GLN-184; TYR-264 AND CYS-1070; MUTAGENESIS OF 1147-LYS--VAL-1153;
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.