3M81

Crystal structure of Acetyl xylan esterase (TM0077) from THERMOTOGA MARITIMA at 2.50 A resolution (native apo structure)

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...)	Acetyl xylan esterase	polymer	337	38662.9	6	UniProt (Q9WXT2) Pfam (PF05448)	Thermotoga maritima
2	BA, G, H, M, P... (F, A, B, C, D...)	CALCIUM ION	non-polymer		40.1	8	Chemie (CA)
3	CA, I, N, Q, U... (F, A, B, C, D...)	CHLORIDE ION	non-polymer		35.5	6	Chemie (CL)
4	J, V, Z (A, D, E)	ACETATE ION	non-polymer		59.0	3	Chemie (ACT)
5	AA, DA, K, L, O... (E, F, A, B, C...)	1,2-ETHANEDIOL	non-polymer		62.1	7	Chemie (EDO)
6	EA, FA, GA, HA, IA... (A, B, C, D, E...)	water	water		18.0	507	Chemie (HOH)

Sequence modifications

A, B, C, D, E, F: 1 - 325 (UniProt: Q9WXT2)

PDB	External Database	Details
Met -11	-	expression tag
Gly -10	-	expression tag
Ser -9	-	expression tag
Asp -8	-	expression tag
Lys -7	-	expression tag
Ile -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	231977.5
Non-Polymers*	Number of molecules	24
	Total formula weight	1145.0
All*	Total formula weight	233122.5

*Water molecules are not included.