3ZQI

Structure of Tetracycline repressor in complex with inducer peptide- TIP2

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	TETRACYCLINE REPRESSOR PROTEIN CLASS B FROM TRANSPOSON TN10, TETRACYCLINE REPRESSOR PROTEIN CLASS D	polymer	208	23531.7	2	UniProt (P04483) UniProt (P0ACT4) Pfam (PF00440) Pfam (PF02909)	ESCHERICHIA COLI
2	C, D (C, D)	INDUCER PEPTIDE TIP2	polymer	16	2034.3	2		ESCHERICHIA COLI
3	E, F, H, I, J (A, B)	1,2-ETHANEDIOL	non-polymer		62.1	5	Chemie (EDO)
4	G (A)	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)
5	K (B)	TETRAETHYLENE GLYCOL	non-polymer		194.2	1	Chemie (PG4)
6	L, M, N, O (A, B, C, D)	water	water		18.0	445	Chemie (HOH)

Sequence modifications

A, B: 1 - 187 (UniProt: P04483)

PDB	External Database	Details
Ser 68	Cys 68	engineered mutation
Asn 88	Cys 88	engineered mutation
Thr 121	Cys 121	engineered mutation
Ser 144	Cys 144	engineered mutation

A, B: 188 - 208 (UniProt: P0ACT4)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	51132.0
Non-Polymers*	Number of molecules	7
	Total formula weight	528.9
All*	Total formula weight	51660.9

*Water molecules are not included.