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UniProtKB/Swiss-Prot P69905: Variant p.Pro38Arg

Hemoglobin subunit alpha
Gene: HBA2
Variant information

Variant position:  38
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 Proline (P) to Arginine (R) at position 38 (P38R, p.Pro38Arg).
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 medium size and hydrophobic (P) to large size and basic (R)
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

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

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



Sequence information

Variant position:  38
The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:  142
The length of the canonical sequence.

Location on the sequence:   VGAHAGEYGAEALERMFLSF  P TTKTYFPHFDLSHGSAQVKG
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                         VGAHAGEYGAEALERMFLSFPTTKTYFPHF-DLSHGSAQVKG

Gorilla                       VGAHAGDYGAEALERMFLSFPTTKTYFPHF-DLSHGSAQVK

                              IGGHAGDYGGEALDRTFQSFPTTKTYFPHF-DLSPGSAQVK

Rhesus macaque                VGGHAGEYGAEALERMFLSFPTTKTYFPHF-DLSHGSAQVK

Chimpanzee                    VGAHAGEYGAEALERMFLSFPTTKTYFPHF-DLSHGSAQVK

Mouse                         IGGHGAEYGAEALERMFASFPTTKTYFPHF-DVSHGSAQVK

Rat                           IGGHGGEYGEEALQRMFAAFPTTKTYFSHI-DVSPGSAQVK

Pig                           VGGQAGAHGAEALERMFLGFPTTKTYFPHF-NLSHGSDQVK

Bovine                        VGGHAAEYGAEALERMFLSFPTTKTYFPHF-DLSHGSAQVK

Rabbit                        IGSHGGEYGAEAVERMFLGFPTTKTYFPHF-DFTHGSEQIK

Sheep                         VGGNAGAYGAEALERMFLSFPTTKTYFPHF-DLSHGSAQVK

Cat                           IGSHAGEYGAEALERTFCSFPTTKTYFPHF-DLSHGSAQVK

Horse                         VGGHAGEYGAEALERMFLGFPTTKTYFPHF-DLSHGSAQVK

Chicken                       IAGHAEEYGAETLERMFTTYPPTKTYFPHF-DLSHGSAQIK

Xenopus tropicalis            VAAHGDKYGGEALHRMFMCAPKTKTYFPDF-DFSEHSKHIL

Zebrafish                     ISPKADEIGAEALARMLTVYPQTKTYFSHWADLSPGSGPVK

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 2 – 142 Hemoglobin subunit alpha
Site 57 – 57 Not glycated
Modified residue 25 – 25 Phosphotyrosine
Modified residue 36 – 36 Phosphoserine
Modified residue 41 – 41 N6-succinyllysine; alternate
Modified residue 50 – 50 Phosphoserine
Glycosylation 41 – 41 N-linked (Glc) (glycation) lysine; alternate
Helix 38 – 43


Literature citations

No reference for the current variant in UniProtKB/Swiss-Prot.

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.