2C4I

Crystal structure of engineered avidin

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	AVIDIN	polymer	271	29610.1	1	UniProt (P02701) Pfam (PF01382)	GALLUS GALLUS (CHICKEN)
2	B, C (A)	BIOTIN	non-polymer		244.3	2	Chemie (BTN)
3	D (A)	SULFATE ION	non-polymer		96.1	1	Chemie (SO4)
4	E (A)	water	water		18.0	118	Chemie (HOH)

Sequence modifications

A: 4 - 81 (PDB: 2C4I)
A: 136 - 140 (PDB: 2C4I)
A: 190 - 274 (PDB: 2C4I)
A: 82 - 135 (UniProt: P02701)

PDB	External Database	Details
Gln 132	Glu 77	conflict

A: 141 - 189 (UniProt: P02701)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	29610.1
Non-Polymers*	Number of molecules	3
	Total formula weight	584.7
All*	Total formula weight	30194.7

*Water molecules are not included.