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. 2013 Dec 20;23(2):200–212. doi: 10.1002/pro.2406

Table III.

Phosphate Contacts in Other Protein Structures

	Organism
Phosphate atom	E. coli		C. perfringens
	Residue	Atom	Residue	Atom
O1	T10	OG1	T42	OG1
	T10	N	T42	N
	R135	NH2	R155	NH2
O2	S139	OG	S159	OG
	R135	NH1	R155	NH1
	T141	OG1	T161	OG1
	T141	N	T161	N
O3	S38	OG	S71	OG
	S38	N	S71	N
	G140	N	G160	N
O4	D56^a	OD2^a	S89	OG1
	F11	N	S43	N
			S41	OG
			S43	OG

^a

These two atoms are hypothesized to be involved in a low-barrier hydrogen bond.