UniProtKB/Swiss-Prot P28069: Variant p.Ala158Pro

Pituitary-specific positive transcription factor 1
Gene: POU1F1
Chromosomal location: 3p11
Variant information

Variant position:  158
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 have been found in patients and disease-association is reported in literature. However, this classification is not a definitive assessment of variant pathogenicity.
  • Polymorphism: No disease-association has been reported.
  • Unclassified: Variants have been found in patients but disease-association remains unclear.

Residue change:  From Alanine (A) to Proline (P) at position 158 (A158P, p.Ala158Pro).
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 small size and hydrophobic (A) to medium size and hydrophobic (P)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -1
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:  In CPHD1.
Any additional useful information about the variant.



Sequence information

Variant position:  158
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  291
The length of the canonical sequence.

Location on the sequence:   EFKVRRIKLGYTQTNVGEAL  A AVHGSEFSQTTICRFENLQL
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                         EFKVR-----------------------------------------------------RIKLGY--TQTNVGEALAAVHGSEFSQTTICRFENLQL

Rhesus macaque                EFKVR------------------------------------

Mouse                         EFKVR------------------------------------

Rat                           EFKVR------------------------------------

Pig                           EFKVR------------------------------------

Bovine                        EFKVR------------------------------------

Sheep                         EFKVR------------------------------------

Dog                           EFKVR------------------------------------

Chicken                       EFKLR------------------------------------

Fission yeast                 LFSPPWNLAFASMLSQLLKWDPAKRPTAEMCLDLEFCRVSA

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 – 291 Pituitary-specific positive transcription factor 1
Domain 124 – 198 POU-specific


Literature citations

Mutation of the POU-specific domain of Pit-1 and hypopituitarism without pituitary hypoplasia.
Pfaeffle R.W.; DiMattia G.E.; Parks J.S.; Brown M.R.; Wit J.M.; Jansen M.; van der Nat H.; van den Brande J.L.; Rosenfeld M.G.; Ingraham H.A.;
Science 257:1118-1121(1992)
Cited for: VARIANT CPHD1 PRO-158;

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.