7UN1

8-nm repeat of the human sperm tip singlet microtubule

This is a non-PDB format compatible entry.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, AD, BA, BD, CD... (A, B, C, D, E...)	Sperm acrosome-associated protein 9	polymer	222	25209.0	33	UniProt (Q96E40) Pfam (PF15120)	Homo sapiens (human)
2	AB, B, BC, CA, CB... (AB, AD, AF, BA, BD...)	Tubulin beta-4B chain	polymer	445	49877.8	38	UniProt (P68371) Pfam (PF00091) Pfam (PF03953)	Homo sapiens (human)	Tubulin beta-2 chain,Tubulin beta-2C chain
3	AA, AC, BB, C, CC... (AC, AE, BC, BE, BG...)	Tubulin alpha-1A chain	polymer	451	50188.4	38	UniProt (Q71U36) Pfam (PF00091) Pfam (PF03953)	Homo sapiens (human)	Alpha-tubulin 3,Tubulin B-alpha-1,Tubulin alpha-3 chain
4	BE, BF, CG, CH, EE... (CF, FF, IF, LD, DB...)	GUANOSINE-5'-DIPHOSPHATE	non-polymer		443.2	38	Chemie (GDP)
5	AG, AH, CE, CF, DG... (IE, LC, CG, FG, IG...)	GUANOSINE-5'-TRIPHOSPHATE	non-polymer		523.2	38	Chemie (GTP)
6	AE, AF, BG, BH, DE... (CE, FE, IE, LC, CG...)	MAGNESIUM ION	non-polymer		24.3	38	Chemie (MG)

Contents of the asymmetric unit

Polymers	Number of chains	109
	Total formula weight	4634414.3
Non-Polymers*	Number of molecules	114
	Total formula weight	37646.1
All*	Total formula weight	4672060.4

*Water molecules are not included.