6UDC

Spectroscopic and structural characterization of a genetically encoded direct sensor for protein-ligand interactions

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D	Streptavidin	polymer	136	14615.8	4	UniProt (P22629) Pfam (PF01382) In PDB	Streptomyces avidinii
2	A, B, C, D	BIOTIN	non-polymer		244.3	4	Chemie (BTN)
3		water	water		18.0	50	Chemie (HOH)

Sequence modifications

A, B, C, D: 13 - 139 (UniProt: P22629)

PDB	External Database	Details
Met 12	-	initiating methionine
Dv7 110	Leu 134	conflict
Leu 140	-	expression tag
Glu 141	-	expression tag
His 142	-	expression tag
His 143	-	expression tag
His 144	-	expression tag
His 145	-	expression tag
His 146	-	expression tag
His 147	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	58463.0
Non-Polymers*	Number of molecules	4
	Total formula weight	977.2
All*	Total formula weight	59440.3

*Water molecules are not included.