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5VKM

Crystal structure of human CD22 Ig domains 1-3 in complex with alpha 2-6 sialyllactose

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
B-cell receptor CD22polymer32436660.31UniProt (P20273)
Pfam (PF08205)
Pfam (PF13927)
Homo sapiens (Human)B-lymphocyte cell adhesion molecule,BL-CAM,Sialic acid-binding Ig-like lectin 2,Siglec-2,T-cell surface antigen Leu-14
2B
(B)
alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranosebranched910.81In PDB
GlyTouCan (G22768VO)
3C
(C)
N-acetyl-alpha-neuraminic acid-(2-6)-beta-D-galactopyranosebranched471.41In PDB
GlyTouCan (G63069TR)
4D
(A)
GLYCEROLnon-polymer92.11Chemie (GOL)
5E
(A)
waterwater18.069Chemie (HOH)
Sequence modifications
A: 20 - 330 (UniProt: P20273)
PDBExternal DatabaseDetails
Glu 17-expression tag
Thr 18-expression tag
Gly 19-expression tag
Ala 67Asn 67engineered mutation
Ala 112Asn 112engineered mutation
Ala 135Asn 135engineered mutation
Ala 164Asn 164engineered mutation
Ala 231Asn 231engineered mutation
Gly 331-expression tag
Gly 332-expression tag
Thr 333-expression tag
Lys 334-expression tag
His 335-expression tag
His 336-expression tag
His 337-expression tag
His 338-expression tag
His 339-expression tag
His 340-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight36660.3
BranchedNumber of molecules2
Total formula weight1382.2
Non-Polymers*Number of molecules1
Total formula weight92.1
All*Total formula weight38134.6
*Water molecules are not included.

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PDB entries from 2025-07-02

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