4LIN

Exploring the atomic structure and conformational flexibility of a 320 angstrom long engineered viral fiber using X-ray crystallography

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...)	Tail needle protein gp26	polymer	300	31744.0	12	UniProt (by SIFTS) (P35837)	Bacteriophage P22
2	M, Q, S, V (A, E, G, J)	CALCIUM ION	non-polymer		40.1	4	Chemie (CA)
3	N, O, P, R, T... (A, D, E, H, I...)	CHLORIDE ION	non-polymer		35.5	8	Chemie (CL)
4	AA, BA, CA, DA, EA... (C, D, E, F, G...)	water	water		18.0	764	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	12
	Total formula weight	380928.2
Non-Polymers*	Number of molecules	12
	Total formula weight	443.9
All*	Total formula weight	381372.1

*Water molecules are not included.