1ONQ

Crystal Structure of CD1a in Complex with a Sulfatide

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C	T-cell surface glycoprotein CD1a	polymer	283	32510.4	2	UniProt (P06126) Pfam (PF16497) Pfam (PF07654) In PDB	Homo sapiens (human)	CD1a antigen, T-cell surface antigen T6/Leu-6, hTa1 thymocyte antigen
2	B, D	Beta-2-microglobulin	polymer	99	11748.2	2	UniProt (P01884) Pfam (PF07654) UniProt (by SIFTS) (P61769) In PDB	Homo sapiens (human)	HDCMA22P
3	E, G, H	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		424.4	3	In PDB GlyTouCan (G42666HT)
4	F	alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		367.3	1	In PDB GlyTouCan (G86851RC)
5	A, C	alpha-L-fucopyranose	non-polymer		164.2	2	Chemie (FUC)
6	A, C	SULFATE-3-D-GALACTOSYL-BETA-1-1-N-STEAROYL-D-SPHINGOSINE	non-polymer		808.2	2	Chemie (SLF)
7	C	2-acetamido-2-deoxy-beta-D-glucopyranose	non-polymer		221.2	1	Chemie (NAG)
8		water	water		18.0	450	Chemie (HOH)

Sequence modifications

A, C: 1 - 277 (UniProt: P06126)

PDB	External Database	Details
His 278	-	expression tag
His 279	-	expression tag
His 280	-	expression tag
His 281	-	expression tag
His 282	-	expression tag
His 283	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	88517.1
Branched	Number of molecules	4
	Total formula weight	1640.6
Non-Polymers*	Number of molecules	5
	Total formula weight	2165.8
All*	Total formula weight	92323.5

*Water molecules are not included.