UniProtKB/Swiss-Prot P20823: Variant p.Ile27Leu

Hepatocyte nuclear factor 1-alpha
Gene: HNF1A
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Variant information Variant position:

27 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant:

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:

From Isoleucine (I) to Leucine (L) at position 27 (I27L, p.Ile27Leu). 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:

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:

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
Polymorphism:

The Ala-98/Val-98 polymorphism is associated with a reduction in glucose-induced serum C-peptide and insulin responses. Additional information on the polymorphism described.
Other resources:

Links to websites of interest for the variant.

Variant rs1169288 [ dbSNP | Ensembl ]

Sequence information Variant position:

27 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length:

631 The length of the canonical sequence.
Location on the sequence:

QLQTELLAALLESGLSKEAL I QALGEPGPYLLAGEGPLDKG 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                         QLQTELLAALLESGLSKEALIQALGEPGPYLLAGEG-------PLDKG

Mouse                         QLQTELLAALLESGLSKEALIQALGEPGPYLMVGEG-----

Rat                           QLQTELLAALLESGLSKEALIQALGEPGPYLMVGDG-----

Chicken                       HLQVELLGALLESGLTKETLIKGLSEAEPYVLQSESQHAIN

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.

Type	Positions	Description
Chain	1 – 631	Hepatocyte nuclear factor 1-alpha
Domain	1 – 32	HNF-p1
Region	1 – 31	Dimerization
Alternative sequence	1 – 117	Missing. In isoform 6.
Helix	23 – 30

Literature citations
Submission
SeattleSNPs variation discovery resource;
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]; VARIANTS LEU-27; VAL-98; ASN-487 AND SER-574; The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).
The MGC Project Team;
Genome Res. 14:2121-2127(2004)
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]; VARIANT LEU-27; Mutations in the hepatocyte nuclear factor-1alpha gene (MODY3) are not a major cause of late-onset NIDDM in Japanese subjects.
Yamada S.; Nishigori H.; Onda H.; Takahashi K.; Kitano N.; Morikawa A.; Takeuchi T.; Takeda J.;
Diabetes 46:1512-1513(1997)
Cited for: VARIANTS LEU-27; MET-254 AND ASN-487; A prevalent amino acid polymorphism at codon 98 in the hepatocyte nuclear factor-1alpha gene is associated with reduced serum C-peptide and insulin responses to an oral glucose challenge.
Urhammer S.A.; Fridberg M.; Hansen T.; Rasmussen S.K.; Moeller A.M.; Clausen J.O.; Pedersen O.;
Diabetes 46:912-916(1997)
Cited for: VARIANTS LEU-27; VAL-98 AND ASN-487; Genetic variation in the hepatocyte nuclear factor-1 alpha gene in Danish Caucasians with late-onset NIDDM.
Urhammer S.A.; Rasmussen S.K.; Kaisaki P.J.; Oda N.; Yamagata K.; Moeller A.M.; Fridberg M.; Hansen L.; Hansen T.; Bell G.I.; Pedersen O.;
Diabetologia 40:473-475(1997)
Cited for: VARIANT NIDDM GLN-583; VARIANTS LEU-27; VAL-98 AND ASN-487; Hepatocyte nuclear factor 1alpha coding mutations are an uncommon contributor to early-onset type 2 diabetes in Ashkenazi Jews.
Behn P.S.; Wasson J.; Chayen S.; Smolovitch I.; Thomas J.D.; Glaser B.; Permutt M.A.;
Diabetes 47:967-969(1998)
Cited for: VARIANTS LEU-27; ASN-487 AND ARG-514; Mutations in the hepatocyte nuclear factor-1 alpha gene 'MODY3' are not a major cause of early-onset non-insulin-dependent 'type 2' diabetes mellitus in Japanese.
Nishigori H.; Yamada S.; Kohama T.; Utsugi T.; Shimizu H.; Takeuchi T.; Takeda J.;
J. Hum. Genet. 43:107-110(1998)
Cited for: VARIANTS LEU-27 AND ASN-487;

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.