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Table 1 Global quality estimates of different coronavirus spike glycoproteins

From: Energetics and IC50 based epitope screening in SARS CoV-2 (COVID 19) spike protein by immunoinformatic analysis implicating for a suitable vaccine development

Human coronavirus

Tertiary structure quality assessment

Tertiary structure

Ramachandrans plot

Structural alignment between MERS-CoV vs SARS CoV and COVID 19 vs SARS CoV

Human coronavirus HKU1 (Acc. No.: NC_006577.2:22942-27012) (Template: 6nzk.1A)

QMEAN: − 1.38

Cβ: − 0.88

All atoms: − 1.15

Solvation: − 0.91

Torsion: − 0.89

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Human Coronavirus NL63 (Acc. No.: NC_005831.2:20472-24542) (Template: 6u7h.1A)

QMEAN: − 0.63

Cβ: − 0.10

All atoms: − 0.68

Solvation: − 0.93

Torsion: − 0.28

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Human coronavirus 229E (Acc. No.: NC_002645.1:20570-24091)(Template: 6u7h.1A)

QMEAN: − 1.42

Cβ: − 0.78

All atoms: − 0.93

Solvation: − 0.87

Torsion: − 0.96

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Human coronavirus OC43 strain ATCC VR-759 (Acc. No.: YP_009555241.1) (Template: 6nzk.1A)

QMEAN: − 0.82

Cβ: − 0.62

All atoms: − 0.64

Solvation: − 0.75

Torsion: − 0.45

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Maximum str. similarity,

Alignment, Ramachandran plot alikeness and minimum structural distortion are noticed b/w SARS CoV and COVID 19

Coronavirus (Acc. No.:NC_038294.1:21455-25516) (Template: MERS-CoV)

QMEAN: − 0.54

Cβ: − 1.21

All atoms: − 1.84

Solvation: − 1.45

Torsion: 0.19

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Coronavirus (Acc. No.:NC_004718.3:21492-25259) (Template: SARS-CoV)

QMEAN: − 2.82

Cβ: − 0.65

All atoms: − 1.83

Solvation: − 1.84

Torsion: − 2.01

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SARS coronavirus 2 isolate Wuhan-Hu-1 (Acc. No.:NC_045512.2:21563-25384) (Template: COVID 19)

QMEAN: − 3.63

Cβ: − 0.98

All atoms: − 2.08

Solvation: − 1.99

Torsion: − 2.69

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