From: The multiple roles of histidine in protein interactions
 | B3LYP/6-31+G(d,p) | CCSD/6-31+G(d,p) | ||
---|---|---|---|---|
aHis | Energy b | Length c | Energy b | Length c |
Imid-Phe | −2.735 | 2.594 | −5.663 | 2.594 |
Imid-Tyr | −2.599 | 2.578 | −5.637 | 2.578 |
Imid-Trp | −3.679 | 2.548 | −7.907 | 2.548 |