Structure of PDB 4lor Chain A Binding Site BS02

Receptor Information
>4lor Chain A (length=276) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
PTMYGEILSPNYPQAYPSEVEKSWDIEVPEGYGIHLYFTHLDIELSENCA
YDSVQIISGDTEEGRLCGQRSSNNPHSPIVEEFQVPYNKLQVIFKSDFSN
EERFTGFAAYYVATDINECTDFVDVPCSHFCNNFIGGYFCSCPPEYFLHD
DMKNCGVNCSGDVFTALIGEIASPNYPKPYPENSRCEYQIRLEKGFQVVV
TLRREDFDVEAADSAGNCLDSLVFVAGDRQFGPYCGHGFPGPLNIETKSN
ALDIIFQTDLTGQKKGWKLRYHGDPM
Ligand information
Ligand IDCA
InChIInChI=1S/Ca/q+2
InChIKeyBHPQYMZQTOCNFJ-UHFFFAOYSA-N
SMILES
SoftwareSMILES
CACTVS 3.341[Ca++]
ACDLabs 10.04
OpenEye OEToolkits 1.5.0		[Ca+2]
FormulaCa
NameCALCIUM ION
ChEMBL
DrugBankDB14577
ZINC
PDB chain4lor Chain A Residue 301 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB4lor Structural basis of the C1q/C1s interaction and its central role in assembly of the C1 complex of complement activation.
Resolution2.5 Å
Binding residue
(original residue number in PDB)		E45 D53 D98 S100 N101
Binding residue
(residue number reindexed from 1)		E44 D52 D97 S99 N100
Annotation score4
Enzymatic activity
Enzyme Commision number 3.4.21.42: complement subcomponent C1s.
Gene Ontology
Molecular Function
GO:0005509 calcium ion binding

View graph for
Molecular Function
External links
PDB RCSB:4lor, PDBe:4lor, PDBj:4lor
PDBsum4lor
PubMed23922389
UniProtP09871|C1S_HUMAN Complement C1s subcomponent (Gene Name=C1S)

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