Table II.

List of Ultrahigh Resolution Structures Corresponding to Conserved Gly Positions with (φ, ψ) Values Disallowed for non-Gly and Shows no Short Contact in Gly → Ala Mutant

S no	PDB code	Residue number	φ	ψ	One of the nonbonded distance involving Cβ at the site of mutation	Observed distance (Å)	The shortest possible approach distance (normal limit) proposed by Ramachandran et al. (Å)	Difference in the two nonbonded distances (Å)
1	1od3	51	72.3	−165.5	Cβ51---O50	2.81	2.8	0.01
2	1od3	127	75.9	−162.8	Cβ27---N128	2.92	2.9	0.02
3	1w6s	2539	60.7	−163.6	Cβ2539---Cα2540	3.02	3.0	0.02
4	1n4w	19	−83.9	−157.9	Cβ19---N20	2.92	2.9	0.02
5	1mso	8	56.2	−136.2	Cβ8---O7	2.82	2.8	0.02