4U46

Crystal structure of an avidin mutant

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)	Avidin	polymer	138	15863.8	2	UniProt (P02701) Pfam (PF01382)	Gallus gallus (Chicken)
2	C, D, E, F, G... (A, B)	CHLORIDE ION	non-polymer		35.5	12	Chemie (CL)
3	O, P (A, B)	water	water		18.0	72	Chemie (HOH)

Sequence modifications

A, B: -1 - 128 (UniProt: P02701)

PDB	External Database	Details
Gln -3	-	expression tag
Thr -2	-	expression tag
Val -1	Leu 23	expression tag
Asn 0	Ser 24	expression tag
Arg 13	Asp 37	conflict
Met 14	Leu 38	conflict
Asn 15	Gly 39	conflict
His 16	Ser 40	conflict
Ala 35	Thr 59	conflict
Thr 36	Ala 60	conflict
Asn 38	Thr 62	conflict
Tyr 117	Ile 141	conflict
His 129	-	expression tag
His 130	-	expression tag
His 131	-	expression tag
His 132	-	expression tag
His 133	-	expression tag
His 134	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	31727.6
Non-Polymers*	Number of molecules	12
	Total formula weight	425.4
All*	Total formula weight	32153.0

*Water molecules are not included.