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Table 2 Results of protein structure stability and functional analysis

From: Comprehensive bioinformatics analysis of selected germline variants of uncertain significance identified in a cohort of Sri Lankan hereditary breast cancer patients

Gene

SNV ID

Variant

MutPred2

PredictSNP

I-Mutant2.0

MuPro

Michelanglo-VENUS

   

Score

Prediction

Score

Prediction

Score

Prediction

Score

Prediction

Gibbs free energy (∆∆G value)

Amino acid change

BRCA1

rs1555587813

Asp1131Gly

0.256

No pathogenic effect

51%

Deleterious

− 1.58

Decrease Stability

− 2.06

Decrease stability

Variant is unlikely to significantly affect the stability of the protein

Amino acid Aspartate (D)- acidic, polar, hydrophilic negatively charged changed to the amino acid Glycine (G)- neutral charge at physiological pH, hydrophilic (weak hydrophobic tendencies), smaller more flexible

BRIP1

rs45437094

Arg1035Cys

0.102

No pathogenic effect

51%

Deleterious

− 0.16

Decrease Stability

− 0.89

Decrease stability

Variant is unlikely to significantly affect the stability of the protein

Amino acid Arginine -positively charged hydrophilic basic changed to the amino acid Cysteine—neutral, hydrophilic amino acid

CHEK2

rs375507194

Gln20His

0.139

No pathogenic effect

55%

Deleterious

− 0.29

Decrease Stability

− 1.05

Decrease stability

Variant is unlikely to significantly affect the stability of the protein

The amino acid Glutamine (Q)-acidic, polar negatively charged changed to the amino acid Histidine (H) neutral charge smaller more flexible

MET

rs1207381066

Arg280Ser

0.915

Possibly pathogenic

72%

Deleterious

− 2.14

Decrease Stability

− 0.54

Decrease stability

Suggested few changes in the motifs

Amino acid Arginine -basic positively charged, hydrophilic, polar changed to amino acid Serine- polar hydrophilic uncharged

STK11

rs545015076

Asn119Asp

0.668

Possibly pathogenic

83%

Neutral

− 1.25

Decrease Stability

− 1.26

Decrease stability

Variant is unlikely to significantly affect the stability of the protein

Amino acid Asparagine (N)-polar, hydrophilic uncharged neutral changed to Aspartate (D) polar negatively charged and hydrophilic. But both are equal in size