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UniProtKB/Swiss-Prot P69905: Variant p.Gly60Asp

Hemoglobin subunit alpha
Gene: HBA2
Variant information

Variant position:  60
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 Glycine (G) to Aspartate (D) at position 60 (G60D, p.Gly60Asp).
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 glycine (G) to medium size and acidic (D)
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 Adana; unstable; causes alpha-thalassemia.
Any additional useful information about the variant.

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



Sequence information

Variant position:  60
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:   TKTYFPHFDLSHGSAQVKGH  G KKVADALTNAVAHVDDMPNA
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                         TKTYFPHF-DLSHGSAQVKGHGKKVADALTNAVAHVDDMPNA

Gorilla                       TKTYFPHF-DLSHGSAQVKGHGKKVADALTNAVAHVDDMPN

                              TKTYFPHF-DLSPGSAQVKAHGKKVADALTTAVAHLDDLPG

Rhesus macaque                TKTYFPHF-DLSHGSAQVKGHGKKVADALTLAVGHVDDMPN

Chimpanzee                    TKTYFPHF-DLSHGSAQVKGHGKKVADALTNAVAHVDDMPN

Mouse                         TKTYFPHF-DVSHGSAQVKGHGKKVADALASAAGHLDDLPG

Rat                           TKTYFSHI-DVSPGSAQVKAHGKKVADALAKAADHVEDLPG

Pig                           TKTYFPHF-NLSHGSDQVKAHGQKVADALTKAVGHLDDLPG

Bovine                        TKTYFPHF-DLSHGSAQVKGHGAKVAAALTKAVEHLDDLPG

Rabbit                        TKTYFPHF-DFTHGSEQIKAHGKKVSEALTKAVGHLDDLPG

Sheep                         TKTYFPHF-DLSHGSAQVKGHGEKVAAALTKAVGHLDDLPG

Cat                           TKTYFPHF-DLSHGSAQVKAHGQKVADALTQAVAHMDDLPT

Horse                         TKTYFPHF-DLSHGSAQVKAHGKKVGDALTLAVGHLDDLPG

Chicken                       TKTYFPHF-DLSHGSAQIKGHGKKVVAALIEAANHIDDIAG

Xenopus tropicalis            TKTYFPDF-DFSEHSKHILAHGKKVSDALNEACNHLDNIAG

Zebrafish                     TKTYFSHWADLSPGSGPVKKHGKTIMGAVGEAISKIDDLVG

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
Metal binding 59 – 59 Iron (heme distal ligand)
Site 57 – 57 Not glycated
Site 60 – 61 (Microbial infection) Cleavage; by N.americanus apr-2
Site 61 – 61 Not glycated
Modified residue 41 – 41 N6-succinyllysine; alternate
Modified residue 50 – 50 Phosphoserine
Glycosylation 41 – 41 N-linked (Glc) (glycation) lysine; alternate
Glycosylation 62 – 62 N-linked (Glc) (glycation) lysine
Helix 54 – 72


Literature citations

Hb Adana or alpha 2(59)(E8)Gly-->Asp beta 2, a severely unstable alpha 1-globin variant, observed in combination with the -(alpha)20.5 Kb alpha-thal-1 deletion in two Turkish patients.
Cueruek M.A.; Dimovski A.J.; Baysal E.; Gu L.H.; Kutlar F.; Molchanova T.P.; Webber B.B.; Altay C.; Guergey A.; Huisman T.H.;
Am. J. Hematol. 44:270-275(1993)
Cited for: VARIANT ADANA ASP-60;

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.