7XT6

Structure of a membrane protein M3

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	B-cell antigen receptor complex-associated protein alpha chain	polymer	137	15504.7	1	UniProt (P11912) Pfam (PF13927) In PDB	Homo sapiens (human)	Ig-alpha,MB-1 membrane glycoprotein,Membrane-bound immunoglobulin-associated protein,Surface IgM-associated protein
2	B, D	Isoform 2 of Immunoglobulin heavy constant mu	polymer	364	40286.2	2	UniProt (P01871-2) Pfam (PF07654) UniProt (by SIFTS) (P01871) In PDB	Homo sapiens (human)	Ig mu chain C region,Ig mu chain C region BOT,Ig mu chain C region GAL,Ig mu chain C region OU
3	C	B-cell antigen receptor complex-associated protein beta chain	polymer	139	16143.7	1	UniProt (P40259) Pfam (PF07686) In PDB	Homo sapiens (human)	B-cell-specific glycoprotein B29,Ig-beta,Immunoglobulin-associated B29 protein
4	F	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		951.9	1	In PDB GlyTouCan (G10133VD)
5	G	alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		748.7	1	In PDB GlyTouCan (G81315DD)
6	A, B, C, D	2-acetamido-2-deoxy-beta-D-glucopyranose	non-polymer		221.2	12	Chemie (NAG)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	112220.8
Branched	Number of molecules	2
	Total formula weight	1700.6
Non-Polymers*	Number of molecules	12
	Total formula weight	2654.5
All*	Total formula weight	116575.9

*Water molecules are not included.