6VJK

Streptavidin mutant M88 (N49C/A86C)

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, E... (A, B, C, D, E...)	Streptavidin	polymer	124	13133.3	12	UniProt (P22629)	Streptomyces avidinii
2	M, N, O, P, Q... (A, B, C, D, E...)	BIOTIN	non-polymer		244.3	12	Chemie (BTN)
3	AA, BA, CA, DA, EA... (C, D, E, F, G...)	water	water		18.0	1667	Chemie (HOH)

Sequence modifications

A, B, C, D, E, F, G, H, I, J, K, L: 14 - 136 (UniProt: P22629)

PDB	External Database	Details
Met 13	-	initiating methionine
Cys 49	Asn 73	engineered mutation
Cys 86	Ala 110	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	12
	Total formula weight	157599.9
Non-Polymers*	Number of molecules	12
	Total formula weight	2931.7
All*	Total formula weight	160531.7

*Water molecules are not included.