3JAS

Cryo-EM structure of dynamic GDP-microtubule (14 protofilaments) decorated with kinesin

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	E, J, C, L, A...	Tubulin alpha-1B chain	polymer	451	50204.4	6	UniProt (Q2XVP4) Pfam (PF00091) Pfam (PF03953) In PDB	Sus scrofa (pig)	Alpha-tubulin ubiquitous, Tubulin K-alpha-1, Tubulin alpha-ubiquitous chain
2	F, G, D, I, B...	Tubulin beta chain	polymer	445	49907.8	6	UniProt (P02554) Pfam (PF00091) Pfam (PF03953) In PDB	Sus scrofa (pig)	Beta-tubulin
3	K, E, J, C, L...	GUANOSINE-5'-TRIPHOSPHATE	non-polymer		523.2	6	Chemie (GTP)
4	K, E, J, C, L...	MAGNESIUM ION	non-polymer		24.3	6	Chemie (MG)
5	B, H, F, G, D...	GUANOSINE-5'-DIPHOSPHATE	non-polymer		443.2	6	Chemie (GDP)

Contents of the asymmetric unit

Polymers	Number of chains	12
	Total formula weight	600673.3
Non-Polymers*	Number of molecules	18
	Total formula weight	5944.1
All*	Total formula weight	606617.4

*Water molecules are not included.