7BF0

Zn-bound domain 3 of CDCA1 in complex with carbon dioxide

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Cadmium-specific carbonic anhydrase	polymer	231	24826.4	2	UniProt (Q50EL4) Pfam (PF18484) In PDB	Thalassiosira weissflogii (Marine diatom)	(CDCA1-R3)
2	A, B	ZINC ION	non-polymer		65.4	2	Chemie (ZN)
3	A	CHLORIDE ION	non-polymer		35.5	1	Chemie (CL)
4	A, B	CARBON DIOXIDE	non-polymer		44.0	2	Chemie (CO2)
5		water	water		18.0	171	Chemie (HOH)

Sequence modifications

A, B: 407 - 616 (UniProt: Q50EL4)

PDB	External Database	Details
Met -20	-	initiating methionine
Gly -19	-	expression tag
Ser -18	-	expression tag
Ser -17	-	expression tag
His -16	-	expression tag
His -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
His -12	-	expression tag
His -11	-	expression tag
Ser -10	-	expression tag
Ser -9	-	expression tag
Gly -8	-	expression tag
Leu -7	-	expression tag
Val -6	-	expression tag
Pro -5	-	expression tag
Arg -4	-	expression tag
Gly -3	-	expression tag
Ser -2	-	expression tag
His -1	-	expression tag
Met 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	49652.8
Non-Polymers*	Number of molecules	5
	Total formula weight	254.3
All*	Total formula weight	49907.1

*Water molecules are not included.