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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot Q9H6U8: Variant p.Pro506Leu

Alpha-1,2-mannosyltransferase ALG9
Gene: ALG9
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Variant information Variant position: help 506 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help LB/B 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 Proline (P) to Leucine (L) at position 506 (P506L, p.Pro506Leu). 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 hydrophobic. The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -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

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


Sequence information Variant position: help 506 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 611 The length of the canonical sequence.
Location on the sequence: help QLQFIPSEFRGQLPKPFAEG P LATRIVPTDMNDQNLEEPSR 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                         QLQFIPSEFRGQLPKPFAEGPL------ATRIVPTDMNDQNLEEPSR

Mouse                         QLQFIPSEFRGQLPKPFAEGPL------ATRTVPTHMNDQN

Caenorhabditis elegans        EMRFIQSEFRGLLPKPFLKSDKLV---EVTRHIPTEMNNLN

Baker's yeast                 RLKFVKSGFDGLLPGDFPESGSIF---KKIRTLPKGMNNKN

Fission yeast                 RLKFVKSEFDGILPGEFVESNSTWWNREGYYQIPEHMNEFN

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 – 611 Alpha-1,2-mannosyltransferase ALG9
Topological domain 427 – 611 Lumenal



Literature citations
A mannosyltransferase gene at 11q23 is disrupted by a translocation breakpoint that co-segregates with bipolar affective disorder in a small family.
Baysal B.E.; Willett-Brozick J.E.; Badner J.A.; Corona W.; Ferrell R.E.; Nimgaonkar V.L.; Detera-Wadleigh S.D.;
Neurogenetics 4:43-53(2002)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1); CHROMOSOMAL TRANSLOCATION; TISSUE SPECIFICITY; VARIANTS ILE-289 AND LEU-506;
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.