4TV8

Tubulin-Maytansine complex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C	Tubulin alpha-1B chain	polymer	451	50204.4	2	UniProt (P81947) Pfam (PF00091) Pfam (PF03953) In PDB	Bos taurus (cattle)	Alpha-tubulin ubiquitous,Tubulin K-alpha-1,Tubulin alpha-ubiquitous chain, tubulin alpha chain
2	B, D	Tubulin beta-2B chain	polymer	445	49999.9	2	UniProt (Q6B856) Pfam (PF00091) Pfam (PF03953) In PDB	Bos taurus (cattle)	Tubulin beta chain
3	E	Stathmin-4	polymer	143	16844.2	1	UniProt (P63043) Pfam (PF00836) In PDB	Rattus norvegicus (Norway Rat)	Stathmin-like protein B3,RB3
4	F	Tubulin-Tyrosine Ligase	polymer	384	44378.5	1	UniProt (E1BQ43) In PDB	Gallus gallus (Chicken)
5	A, C	GUANOSINE-5'-TRIPHOSPHATE	non-polymer		523.2	2	Chemie (GTP)
6	A, B, C, D	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
7	A, B, C	CALCIUM ION	non-polymer		40.1	4	Chemie (CA)
8	A, C	GLYCEROL	non-polymer		92.1	2	Chemie (GOL)
9	B, D	GUANOSINE-5'-DIPHOSPHATE	non-polymer		443.2	2	Chemie (GDP)
10	B	2-(N-MORPHOLINO)-ETHANESULFONIC ACID	non-polymer		195.2	1	Chemie (MES)
11	D	(3beta,4beta,5beta,10beta,11E,13E)-maytansine	non-polymer		692.2	1	Chemie (3GT)
12	F	PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTER	non-polymer		505.2	1	Chemie (ACP)
13		water	water		18.0	671	Chemie (HOH)

Sequence modifications

E: 5 - 145 (UniProt: P63043)

PDB	External Database	Details
Met 3	-	expression tag
Ala 4	-	expression tag

F: 1 - 378 (UniProt: E1BQ43)

PDB	External Database	Details
His 379	-	expression tag
His 380	-	expression tag
His 381	-	expression tag
His 382	-	expression tag
His 383	-	expression tag
His 384	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	261631.3
Non-Polymers*	Number of molecules	17
	Total formula weight	3767.1
All*	Total formula weight	265398.4

*Water molecules are not included.