H-bond forming residues, π–π stacking interaction, and interacting residues along with their bond distances in the binding of bioactive compounds of black rice bran with α-glucosidase enzyme.

Compound	H-bond		π–π interactions		Amino acid residues involved in interaction
	Residues	Bond distance (Å)	Residues	Bond distance (Å)
COG	Glu411	2.04	Tyr158, Tyr72, Phe178	3.94, 4.19, 5.24	Leu246, asp242, phe178, leu219, tyr72, val216, asp215, arg213, arg446, hie351, asp352, gln353, gln279, glu277, phe303, thr306, arg315, tyr316, ile440, arg442, glu411, tyr158, phe159
	Asp352	1.97
	Gln279	1.73
	Hie351	1.87
	Asp215	1.82
FLS	Glu277	1.77	Hip280	4.51	Phe303, glu277, gln279, hip280, asp307, thr310, ser311, pro312, leu313, phe314, arg315, hie112, val101, phe178, gln182, val109, arg213, asp215, val216, arg442, asp69, tyr72, phe159, glu411
	Pro312	1.94
	Hie122	2.22
	Asp215	1.81
	Asp215	1.79
	Hie351	1.88
	Asp69	1.85
	Arg442	1.88
	Glu411	2.56
	Glu411	1.97
PCA	Asp242	1.89			Ser240, asp242, pro312, leu313, phe314, arg315, lys156, tyr158, leu246, hip280
	Asp242	1.93
	Arg315	2.24
SYA	Arg213	2.05			Phe303, tyr158, phe159, asp69, tyr72, gln182, phe178, hie112, val216, asp215, arg213, asp352, hie351, asn350, gln279, glu277
	Hie315	2.34
SPA	Gln279	1.93			Phe178, tyr158, phe159, arg213, val216, glu277, gln279, tyr347, asn350, asp352, gln353, phe303, arg442, glu411, tyr316, arg315
	Tyr316	1.85
	Arg315	1.90
pCmA	Ser241	1.93			Leu177, ser240, asp242, lys156, ser157, tyr158, tyr316, arg315, phe314
	Lys156	1.69
α-d-Gluco pyranose	Hie112	2.31			Val109, hie112, asp69, tyr72, val216, asp215, arg213, phe303, hie351, asp352, glu277, arg446, phe159, arg442, phe178, gln182
	Asp215	1.66
	Arg213	1.97
	Asp352	1.85
	Asp352	1.86
	Arg442	1.72
	Asp69	1.80