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PDBsum entry 4qkj

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Immune system PDB id
4qkj

 

 

 

 

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Contents
Protein chain
115 a.a.
Ligands
NAG
Waters ×15
PDB id:
4qkj
Name: Immune system
Title: Glycosylated form of human llt1, a ligand for nkr-p1, in this structure forming hexamers
Structure: C-type lectin domain family 2 member d. Chain: a. Fragment: extracellular part, unp residues 72-191. Synonym: lectin-like nk cell receptor, lectin-like transcript 1, llt- 1, osteoclast inhibitory lectin. Engineered: yes. Mutation: yes
Source: Homo sapiens. Human. Organism_taxid: 9606. Gene: clax, clec2b, clec2d, llt1, ocil. Expressed in: homo sapiens. Expression_system_taxid: 9606. Expression_system_cell_line: hek293s gnti-.
Resolution:
2.75Å     R-factor:   0.230     R-free:   0.298
Authors: T.Skalova,J.Blaha,J.Duskova,T.Koval,J.Stransky,J.Hasek,O.Vanek, J.Dohnalek
Key ref: T.Skálová et al. (2015). Four crystal structures of human LLT1, a ligand of human NKR-P1, in varied glycosylation and oligomerization states. Acta Crystallogr D Biol Crystallogr, 71, 578-591. PubMed id: 25760607 DOI: 10.1107/S1399004714027928
Date:
06-Jun-14     Release date:   11-Mar-15    
PROCHECK
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 Headers
 References

Protein chain
Pfam   ArchSchema ?
Q9UHP7  (CLC2D_HUMAN) -  C-type lectin domain family 2 member D from Homo sapiens
Seq:
Struc:
191 a.a.
115 a.a.*
Key:    PfamA domain  Secondary structure  CATH domain
* PDB and UniProt seqs differ at 1 residue position (black cross)

 

 
DOI no: 10.1107/S1399004714027928 Acta Crystallogr D Biol Crystallogr 71:578-591 (2015)
PubMed id: 25760607  
 
 
Four crystal structures of human LLT1, a ligand of human NKR-P1, in varied glycosylation and oligomerization states.
T.Skálová, J.Bláha, K.Harlos, J.Dušková, T.Koval', J.Stránský, J.Hašek, O.Vaněk, J.Dohnálek.
 
  ABSTRACT  
 
Human LLT1 is a C-type lectin-like ligand of NKR-P1 (CD161, gene KLRB1), a C-type lectin-like receptor of natural killer cells. Using X-ray diffraction, the first experimental structures of human LLT1 were determined. Four structures of LLT1 under various conditions were determined: monomeric, dimeric deglycosylated after the first N-acetylglucosamine unit in two forms and hexameric with homogeneous GlcNAc2Man5 glycosylation. The dimeric form follows the classical dimerization mode of human CD69. The monomeric form keeps the same fold with the exception of the position of an outer part of the long loop region. The hexamer of glycosylated LLT1 consists of three classical dimers. The hexameric packing may indicate a possible mode of interaction of C-type lectin-like proteins in the glycosylated form.
 

 

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