1CCS

STRUCTURE-ASSISTED REDESIGN OF A PROTEIN-ZINC BINDING SITE WITH FEMTOMOLAR AFFINITY

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	CARBONIC ANHYDRASE II	polymer	259	29171.8	1	UniProt (P00918) Pfam (PF00194) In PDB	Homo sapiens (human)
2	A	ZINC ION	non-polymer		65.4	1	Chemie (ZN)
3		water	water		18.0	122	Chemie (HOH)

Sequence modifications

A: 2 - 261 (UniProt: P00918)

PDB	External Database	Details
Asp 199	Thr 197	conflict

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	29171.8
Non-Polymers*	Number of molecules	1
	Total formula weight	65.4
All*	Total formula weight	29237.3

*Water molecules are not included.