7QUC

D. melanogaster alpha/beta tubulin heterodimer in the GDP form

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Tubulin alpha-1 chain	polymer	475	52772.3	1	UniProt (P06603) Pfam (PF00091) Pfam (PF03953) In PDB	Drosophila melanogaster (fruit fly)
2	B	Tubulin beta-1 chain	polymer	447	50194.1	1	UniProt (Q24560) Pfam (PF00091) Pfam (PF03953) In PDB	Drosophila melanogaster (fruit fly)	Beta-1-tubulin
3	A	GUANOSINE-5'-TRIPHOSPHATE	non-polymer		523.2	1	Chemie (GTP)
4	A	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)
5	B	GUANOSINE-5'-DIPHOSPHATE	non-polymer		443.2	1	Chemie (GDP)

Sequence modifications

A: 1 - 450 (UniProt: P06603)

PDB	External Database	Details
Met -24	-	initiating methionine
His -23	-	expression tag
His -22	-	expression tag
His -21	-	expression tag
His -20	-	expression tag
His -19	-	expression tag
His -18	-	expression tag
Glu -17	-	expression tag
Asp -16	-	expression tag
Gln -15	-	expression tag
Val -14	-	expression tag
Asp -13	-	expression tag
Pro -12	-	expression tag
Arg -11	-	expression tag
Leu -10	-	expression tag
Ile -9	-	expression tag
Asp -8	-	expression tag
Gly -7	-	expression tag
Lys -6	-	expression tag
Gly -5	-	expression tag
Gly -4	-	expression tag
Gly -3	-	expression tag
Gly -2	-	expression tag
Arg -1	-	expression tag
Pro 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	102966.5
Non-Polymers*	Number of molecules	3
	Total formula weight	990.7
All*	Total formula weight	103957.1

*Water molecules are not included.