1NBE

ASPARTATE TRANSCARBAMOYLASE REGULATORY CHAIN MUTANT (T82A)

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C	ASPARTATE TRANSCARBAMOYLASE	polymer	310	34337.1	2	UniProt (P0A786) Pfam (PF02729) Pfam (PF00185) In PDB	Escherichia coli
2	B, D	ASPARTATE TRANSCARBAMOYLASE	polymer	153	17113.6	2	UniProt (P0A7F3) Pfam (PF01948) Pfam (PF02748) In PDB	Escherichia coli
3	A, C	D-MALATE	non-polymer		134.1	4	Chemie (MLT)
4	B, D	ZINC ION	non-polymer		65.4	2	Chemie (ZN)
5		water	water		18.0	550	Chemie (HOH)

Sequence modifications

A, C: 1 - 310 (UniProt: P0A786)

PDB	External Database	Details
Gln 60	Glu 60	conflict
Gln 147	Glu 147	conflict
Glu 149	Gln 149	conflict
Glu 196	Gln 196	conflict

B, D: 2 - 153 (UniProt: P0A7F3)

PDB	External Database	Details
Ala 82	Thr 81	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	102901.4
Non-Polymers*	Number of molecules	6
	Total formula weight	667.2
All*	Total formula weight	103568.6

*Water molecules are not included.