4UOV

The structure of a tetrameric alpha-carbonic anhydrase from Thermovibrio ammonificans reveals a core formed around intermolecular disulfides, which contribute to its thermostability.

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...)	CARBONATE DEHYDRATASE	polymer	247	27725.9	6	UniProt (E8T502)	THERMOVIBRIO AMMONIFICANS	ALPHA CARBONIC ANHYDRASE
2	BB, CA, G, LA, Q... (F, C, A, D, B...)	ZINC ION	non-polymer		65.4	6	Chemie (ZN)
3	CB, DA, H, MA, R... (F, C, A, D, B...)	5-ACETAMIDO-1,3,4-THIADIAZOLE-2-SULFONAMIDE	non-polymer		222.2	6	Chemie (AZM)
4	DB, I, S (F, A, B)	3,6,9,12,15,18,21,24,27,30,33,36,39-TRIDECAOXAHENTETRACONTANE-1,41-DIOL	non-polymer		634.8	3	Chemie (PE3)
5	EA, EB, J, NA, UA (C, F, A, D, E)	2-[3-(2-HYDROXY-1,1-DIHYDROXYMETHYL-ETHYLAMINO)-PROPYLAMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL	non-polymer		282.3	5	Chemie (B3P)
6	FA, FB, K, OA, T... (C, F, A, D, B...)	SULFATE ION	non-polymer		96.1	6	Chemie (SO4)
7	GA, GB, HA, IB, JA... (C, F, A, D, B...)	CHLORIDE ION	non-polymer		35.5	15	Chemie (CL)
8	AB, BA, KA, KB, LB... (E, B, C, F, A)	DI(HYDROXYETHYL)ETHER	non-polymer		106.1	8	Chemie (PEG)
9	HB, O, X (F, A, B)	L(+)-TARTARIC ACID	non-polymer		150.1	3	Chemie (TLA)
10	IA, JB, QA, W, XA (C, F, D, B, E)	TRIETHYLENE GLYCOL	non-polymer		150.2	5	Chemie (PGE)
11	AA (B)	1-METHOXY-2-[2-(2-METHOXY-ETHOXY]-ETHANE	non-polymer		178.2	1	Chemie (PG5)
12	MB, NB, OB, PB, QB... (A, B, C, D, E...)	water	water		18.0	1918	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	166355.4
Non-Polymers*	Number of molecules	58
	Total formula weight	8378.3
All*	Total formula weight	174733.7

*Water molecules are not included.