1BUN - Sequence, Chains, Asymmetric and Biological Units

• Title: STRUCTURE OF BETA2-BUNGAROTOXIN: POTASSIUM CHANNEL BINDING BY KUNITZ MODULES AND TARGETED PHOSPHOLIPASE ACTION
• Keywords: HYDROLASE, PRESYNAPTIC NEUROTOXIN
• Experiment: X-ray diffraction
• Number of Models: 1

Database	ID code	Status	Coordinate files
			Header	Asymmetric unit	Biological unit
PDB	1BUN	released	available	available	Quaternary Structure Server

Asymmetric unit from PDB

Unit	Type	Name	Chain ID	Residues	Atoms	Hetatoms
1	Protein	BETA2-BUNGAROTOXIN	A	120	938	0
2	Protein	BETA2-BUNGAROTOXIN	B	61	502	0
3	Ligand	BETA2-BUNGAROTOXIN	A	2	0	2
4	Water			81	0	81
total				264	1440	83

Proteins

Unit 1

ASN 1 LEU 2 ILE 3 ASN 4 PHE 5 MET 6 GLU 7 MET 8 ILE 9 ARG 10 TYR 11 THR 12 ILE 13 PRO 14 CYS 15 GLU 16 LYS 17 THR 18 TRP 19 GLY 20 GLU 21 TYR 22 ALA 23 ASP 24 TYR 25 GLY 26 CYS 27 TYR 28 CYS 29 GLY 30 ALA 31 GLY 32 GLY 33 SER 34 GLY 35 ARG 36 PRO 37 ILE 38 ASP 39 ALA 40 LEU 41 ASP 42 ARG 43 CYS 44 CYS 45 TYR 46 VAL 47 HIS 48 ASP 49 ASN 50 CYS 51 TYR 52 GLY 53 ASP 54 ALA 55 GLU 56 LYS 57 LYS 58 HIS 59 LYS 60 CYS 61 ASN 62 PRO 63 LYS 64 THR 65 GLN 66 SER 67 TYR 68 SER 69 TYR 70 LYS 71 LEU 72 THR 73 LYS 74 ARG 75 THR 76 ILE 77 ILE 78 CYS 79 TYR 80 GLY 81 ALA 82 ALA 83 GLY 84 THR 85 CYS 86 ALA 87 ARG 88 ILE 89 VAL 90 CYS 91 ASP 92 CYS 93 ASP 94 ARG 95 THR 96 ALA 97 ALA 98 LEU 99 CYS 100 PHE 101 GLY 102 ASN 103 SER 104 GLU 105 TYR 106 ILE 107 GLU 108 GLY 109 HIS 110 LYS 111 ASN 112 ILE 113 ASP 114 THR 115 ALA 116 ARG 117 PHE 118 CYS 119 GLN 120

Unit 2

ARG 1 LYS 2 ARG 3 HIS 4 PRO 5 ASP 6 CYS 7 ASP 8 LYS 9 PRO 10 PRO 11 ASP 12 THR 13 LYS 14 ILE 15 CYS 16 GLN 17 THR 18 VAL 19 VAL 20 ARG 21 ALA 22 PHE 23 TYR 24 TYR 25 LYS 26 PRO 27 SER 28 ALA 29 LYS 30 ARG 31 CYS 32 VAL 33 GLN 34 PHE 35 ARG 36 TYR 37 GLY 38 GLY 39 CYS 40 ASN 41 GLY 42 ASN 43 GLY 44 ASN 45 HIS 46 PHE 47 LYS 48 SER 49 ASP 50 HIS 51 LEU 52 CYS 53 ARG 54 CYS 55 GLU 56 CYS 57 LEU 58 GLU 59 TYR 60 ARG 61

Ligands

Unit 3

NA 121 NA 122