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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P49736: Variant p.Glu166Gln

DNA replication licensing factor MCM2
Gene: MCM2
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Variant information Variant position: help 166 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 Glutamate (E) to Glutamine (Q) at position 166 (E166Q, p.Glu166Gln). 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 medium size and acidic (E) to medium size and polar (Q) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help 2 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 166 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 904 The length of the canonical sequence.
Location on the sequence: help RPARKRRQVERATEDGEEDE E MIESIENLEDLKGHSVREWV 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                         RP------------ARKRRQVERA--TEDG-EEDEEMIE-----SIENLEDLKGHSVREWV

Mouse                         RP------------ARKRRHVERA--TEDG-EEDEEMIE--

Xenopus laevis                RP------------ARKRRMAERA--AEGAPEEDEEMIE--

Xenopus tropicalis            RP------------ARKRRMAERA--AEGAPEEDEEMIE--

Drosophila                    GP------------RAKRRAGEKA--AVGE-VEDTEMVE--

Baker's yeast                 GAAQLDEMGLPVQRRRRRRQYEDLENSDDDLLSDMDIDPLR

Fission yeast                 SNLGTG------FTRHRHRIYDEYSPNVGALDESGEL----

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 2 – 904 DNA replication licensing factor MCM2
Region 2 – 257 Interaction with KAT7
Region 109 – 167 Disordered
Cross 178 – 178 Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO2)



Literature citations
A human nuclear protein with sequence homology to a family of early S phase proteins is required for entry into S phase and for cell division.
Todorov I.T.; Pepperkok R.; Philipova R.N.; Kearsey S.E.; Ansorge W.; Werner D.;
J. Cell Sci. 107:253-265(1994)
Cited for: NUCLEOTIDE SEQUENCE [MRNA]; FUNCTION; SUBCELLULAR LOCATION; VARIANT GLN-166;
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.