UniProtKB/Swiss-Prot P28069: Variant p.Trp193Arg

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

Variant position:  193
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 Tryptophan (W) to Arginine (R) at position 193 (W193R, p.Trp193Arg).
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 large size and aromatic (W) to large size and basic (R)
The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:  -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

Involvement in disease:  Pituitary hormone deficiency, combined, 1 (CPHD1) [MIM:613038]: Combined pituitary hormone deficiency is defined as the impaired production of growth hormone and one or more of the other five anterior pituitary hormones. CPHD1 is characterized by pleiotropic deficiencies of growth hormone, prolactin and thyroid-stimulating hormone, while the production of adrenocorticotropic hormone, luteinizing hormone, and follicle-stimulating hormone are preserved. In infancy severe growth deficiency from birth as well as distinctive facial features with prominent forehead, marked midfacial hypoplasia with depressed nasal bridge, deep-set eyes, and a short nose with anteverted nostrils and hypoplastic pituitary gland by MRI examination can be seen. Some cases present with severe mental retardation along with short stature. Note=The disease is caused by mutations affecting the gene represented in this entry.
The name and a short description of the disease associated with the variant. For more information about the disease, the user can refer to OMIM, following the link provided after the disease acronym.

Variant description:  In CPHD1.
Any additional useful information about the variant.



Sequence information

Variant position:  193
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:   FENLQLSFKNACKLKAILSK  W LEEAEQVGALYNEKVGANER
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                         FENLQLSF--------------KNACKLKAILSKWLEEAEQVG--------------------------------------------------------------ALYNEK-------------------------VGANER

Rhesus macaque                FENLQLSF--------------KNACKLKAILSKWLEEAEQ

Mouse                         FENLQLSF--------------KNACKLKAILSKWLEEAEQ

Rat                           FENLQLSF--------------KNACKLKAILSKWLEEAEQ

Pig                           FENLQLSF--------------KNACKLKAILSKWLEEAEQ

Bovine                        FENLQLSF--------------KNACKLKAILSKWLEEAEQ

Sheep                         FENLQLSF--------------KNACKLKAILFKWLEEAEQ

Dog                           FENLQLSF--------------KNACKLKAILSKWLEEAEQ

Chicken                       FENLQLSF--------------KNACKLKSILSKWLEEAEQ

Fission yeast                 LKQLNKGFNGFTKPFRKSRKQSKNRKNKSSVATQFSEESED

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

Combined pituitary hormone deficiency caused by compound heterozygosity for two novel mutations in the POU domain of the PIT1/POU1F1 gene.
Hendriks-Stegeman B.I.; Augustijn K.D.; Bakker B.; Holthuizen P.; van der Vliet P.C.; Jansen M.;
J. Clin. Endocrinol. Metab. 86:1545-1550(2001)
Cited for: VARIANT CPHD1 ARG-193;

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.