1FYL

SERENDIPITOUS CRYSTAL STRUCTURE CONTAINING THE HEAT SHOCK TRANSCRIPTION FACTOR'S DNA BINDING DOMAIN AND COGNATE DNA IN A HEAD-TO-HEAD ORIENTATION

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	C, D	HEAD-TO-HEAD HSE	polymer	12	3727.3	2
2	A, B	HEAT SHOCK FACTOR PROTEIN	polymer	92	11091.0	2	UniProt (P22121) Pfam (PF00447) In PDB	Kluyveromyces lactis	HEAT SHOCK TRANSCRIPTION FACTOR
3		water	water		18.0	134	Chemie (HOH)

Sequence modifications

A, B: 193 - 284 (UniProt: P22121)

PDB	External Database	Details
Mse 204	Met 204	modified residue
Mse 254	Met 254	modified residue
Mse 268	Met 268	modified residue
Arg 282	Asn 282	engineered mutation
His 283	Phe 283	engineered mutation
Ala 284	Lys 284	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	29636.5
All*	Total formula weight	29636.5

*Water molecules are not included.