1R23 - Sequence, Chains, Asymmetric and Biological Units

• Title: CRYSTAL STRUCTURE OF THE CYANOBACTERIAL METALLOTHIONEIN REPRESSOR SMTB IN THE ZN1-FORM (ONE ZN(II) PER DIMER)
• Keywords: ZINC, DNA BINDING TRANSCRIPTIONAL REGULATION, WINGED HTH PROTEIN, TRANSCRIPTION REPRESSOR
• Experiment: X-ray diffraction
• Number of Models: 1

Database	ID code	Status	Coordinate files
			Header	Asymmetric unit	Biological unit
PDB	1R23	released	available	available	Quaternary Structure Server

Asymmetric unit from PDB

Unit	Type	Name	Chain ID	Residues	Atoms	Hetatoms
1	Protein	TRANSCRIPTIONAL REPRESSOR SMTB	A	104	817	0
2	Protein	TRANSCRIPTIONAL REPRESSOR SMTB	B	97	769	0
3	Ligand	TRANSCRIPTIONAL REPRESSOR SMTB	B	1	0	1
4	Water			123	0	123
total				325	1586	124

Proteins

Unit 1

HIS 18 ALA 19 ALA 20 ILE 21 ALA 22 SER 23 GLU 24 LEU 25 GLN 26 ALA 27 ILE 28 ALA 29 PRO 30 GLU 31 VAL 32 ALA 33 GLN 34 SER 35 LEU 36 ALA 37 GLU 38 PHE 39 PHE 40 ALA 41 VAL 42 LEU 43 ALA 44 ASP 45 PRO 46 ASN 47 ARG 48 LEU 49 ARG 50 LEU 51 LEU 52 SER 53 LEU 54 LEU 55 ALA 56 ARG 57 SER 58 GLU 59 LEU 60 CYS 61 VAL 62 GLY 63 ASP 64 LEU 65 ALA 66 GLN 67 ALA 68 ILE 69 GLY 70 VAL 71 SER 72 GLU 73 SER 74 ALA 75 VAL 76 SER 77 HIS 78 GLN 79 LEU 80 ARG 81 SER 82 LEU 83 ARG 84 ASN 85 LEU 86 ARG 87 LEU 88 VAL 89 SER 90 TYR 91 ARG 92 LYS 93 GLN 94 GLY 95 ARG 96 HIS 97 VAL 98 TYR 99 TYR 100 GLN 101 LEU 102 GLN 103 ASP 104 HIS 105 HIS 106 ILE 107 VAL 108 ALA 109 LEU 110 TYR 111 GLN 112 ASN 113 ALA 114 LEU 115 ASP 116 HIS 117 LEU 118 GLN 119 GLU 120 CYS 121

Unit 2

LEU 25 GLN 26 ALA 27 ILE 28 ALA 29 PRO 30 GLU 31 VAL 32 ALA 33 GLN 34 SER 35 LEU 36 ALA 37 GLU 38 PHE 39 PHE 40 ALA 41 VAL 42 LEU 43 ALA 44 ASP 45 PRO 46 ASN 47 ARG 48 LEU 49 ARG 50 LEU 51 LEU 52 SER 53 LEU 54 LEU 55 ALA 56 ARG 57 SER 58 GLU 59 LEU 60 CYS 61 VAL 62 GLY 63 ASP 64 LEU 65 ALA 66 GLN 67 ALA 68 ILE 69 GLY 70 VAL 71 SER 72 GLU 73 SER 74 ALA 75 VAL 76 SER 77 HIS 78 GLN 79 LEU 80 ARG 81 SER 82 LEU 83 ARG 84 ASN 85 LEU 86 ARG 87 LEU 88 VAL 89 SER 90 TYR 91 ARG 92 LYS 93 GLN 94 GLY 95 ARG 96 HIS 97 VAL 98 TYR 99 TYR 100 GLN 101 LEU 102 GLN 103 ASP 104 HIS 105 HIS 106 ILE 107 VAL 108 ALA 109 LEU 110 TYR 111 GLN 112 ASN 113 ALA 114 LEU 115 ASP 116 HIS 117 LEU 118 GLN 119 GLU 120 CYS 121

Ligands

Unit 3

ZN 501