SEARCH Articles Figures Tables False positives protein crystallography Glial fibrillary acidic protein-positive astrocytes Gram-positive bacteria binding proteins Membrane proteins positive-inside rule Negative acute phase proteins positive Nontrivial Structural and Evolutionary Relationships between Proteins Using Position-Specific Scoring Matrices Positive control protein Positive protein derivative skin test Protein sequencing disulfide bond position Protein tyrosine phosphatase Positive Regulation Proteins amino acid, critical positions Testing for false positive predictions in membrane and soluble proteins of crystallographically known structure