. 2019 Mar 14;16(6):923. doi: 10.3390/ijerph16060923

Table 3.

Physiochemical properties of ACE predicted by ProtParam.

Serial Number	Property	Value
1.	Number of amino acids	589
2.	Total number of atoms	9457
3.	Molecular weight	67,993.20 Dalton
4.	Theoretical pI	5.82
5.	Extinction coefficient *	143,240 at Abs 0.1% 2.112, assuming all pairs of Cys residues form cystines
6.	Instability index	39.46
7.	Aliphatic index	78.86
8.	Grand average of hydropathicity (GRAVY)	−0.441
9.	Chemical Formula	C₃₀₇₆H₄₆₅₆N₈₁₈O₈₈₃S₂₄
10.	Charge	Negative

* Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.