1UUN

Main porin from Mycobacterium smegmatis (MspA)

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	MSPA	polymer	184	19499.5	2	UniProt (Q9RLP7) Pfam (PF09203) UniProt (by SIFTS) (A0QR29)	MYCOBACTERIUM SMEGMATIS
2	C, D (A, B)	water	water		18.0	95	Chemie (HOH)

Sequence modifications

A, B: 1 - 184 (UniProt: Q9RLP7)

PDB	External Database	Details
Arg 96	Ala 123	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	38999.0
All*	Total formula weight	38999.0

*Water molecules are not included.