toll-like receptor 4 (tlr4, extracellular domain) bound to lipopolysaccharide (lps) and md-2. involved in activating the innate

pdb3fxi tlr tolllike toll receptor lps lipopolysaccharide gram negative immune response myeloid differentiation factor lymphocyte antigen tlr4 gene pattern recognition innate cd284 immunity cancer pregnancy opioid analgesic morphine structure peptide protein amino acid molecule polypeptide polymer atoms science scientific disease health molecular model 3d rendering illustration