1STF
THE REFINED 2.4 ANGSTROMS X-RAY CRYSTAL STRUCTURE OF RECOMBINANT HUMAN STEFIN B IN COMPLEX WITH THE CYSTEINE PROTEINASE PAPAIN: A NOVEL TYPE OF PROTEINASE INHIBITOR INTERACTION
Functional Information from GO Data
| Chain | GOid | namespace | contents |
| E | 0006508 | biological_process | proteolysis |
| E | 0008234 | molecular_function | cysteine-type peptidase activity |
| I | 0002020 | molecular_function | protease binding |
| I | 0003723 | molecular_function | RNA binding |
| I | 0004866 | molecular_function | endopeptidase inhibitor activity |
| I | 0004869 | molecular_function | cysteine-type endopeptidase inhibitor activity |
| I | 0005576 | cellular_component | extracellular region |
| I | 0005615 | cellular_component | extracellular space |
| I | 0005634 | cellular_component | nucleus |
| I | 0005730 | cellular_component | nucleolus |
| I | 0005737 | cellular_component | cytoplasm |
| I | 0005829 | cellular_component | cytosol |
| I | 0030414 | molecular_function | peptidase inhibitor activity |
| I | 0031012 | cellular_component | extracellular matrix |
| I | 0034774 | cellular_component | secretory granule lumen |
| I | 0045861 | biological_process | negative regulation of proteolysis |
| I | 0070062 | cellular_component | extracellular exosome |
| I | 1904724 | cellular_component | tertiary granule lumen |
| I | 1904813 | cellular_component | ficolin-1-rich granule lumen |
Functional Information from PROSITE/UniProt
| site_id | PS00139 |
| Number of Residues | 12 |
| Details | THIOL_PROTEASE_CYS Eukaryotic thiol (cysteine) proteases cysteine active site. QGsCGSCWAfSA |
| Chain | Residue | Details |
| E | GLN19-ALA30 |
| site_id | PS00287 |
| Number of Residues | 14 |
| Details | CYSTATIN Cysteine proteases inhibitors signature. SQVVAGTNYfIKVH |
| Chain | Residue | Details |
| I | SER52-HIS65 |
| site_id | PS00639 |
| Number of Residues | 11 |
| Details | THIOL_PROTEASE_HIS Eukaryotic thiol (cysteine) proteases histidine active site. VDHAVAAVGYG |
| Chain | Residue | Details |
| E | VAL157-GLY167 |
| site_id | PS00640 |
| Number of Residues | 20 |
| Details | THIOL_PROTEASE_ASN Eukaryotic thiol (cysteine) proteases asparagine active site. YILiKNSWgtgWGenGYIrI |
| Chain | Residue | Details |
| E | TYR170-ILE189 |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 1 |
| Details | Active site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU10088","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"5681232","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"6502713","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"952885","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"1860874","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"1PAD","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"9PAP","evidenceCode":"ECO:0007744"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI2 |
| Number of Residues | 1 |
| Details | Active site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU10089","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"6502713","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"952885","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1PAD","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"9PAP","evidenceCode":"ECO:0007744"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI3 |
| Number of Residues | 1 |
| Details | Active site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU10090","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"5681232","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"6502713","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"952885","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1PAD","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"9PAP","evidenceCode":"ECO:0007744"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI4 |
| Number of Residues | 1 |
| Details | Binding site: {"description":"covalent","evidences":[{"source":"PubMed","id":"8416808","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1POP","evidenceCode":"ECO:0007744"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI5 |
| Number of Residues | 4 |
| Details | Motif: {"description":"Secondary area of contact"} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI6 |
| Number of Residues | 1 |
| Details | Site: {"description":"Reactive site"} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI7 |
| Number of Residues | 1 |
| Details | Modified residue: {"description":"N-acetylmethionine","evidences":[{"source":"PubMed","id":"19413330","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"22223895","evidenceCode":"ECO:0007744"}]} |
| Chain | Residue | Details |
Catalytic Information from CSA
| site_id | CSA1 |
| Number of Residues | 2 |
| Details | Annotated By Reference To The Literature 1pad |
| Chain | Residue | Details |
| E | ASN175 | |
| E | HIS159 |
| site_id | CSA2 |
| Number of Residues | 2 |
| Details | Annotated By Reference To The Literature 1pad |
| Chain | Residue | Details |
| E | GLN19 | |
| E | HIS159 |
| site_id | CSA3 |
| Number of Residues | 3 |
| Details | Annotated By Reference To The Literature 1pad |
| Chain | Residue | Details |
| E | ASN175 | |
| E | GLN19 | |
| E | HIS159 |
| site_id | MCSA1 |
| Number of Residues | 4 |
| Details | M-CSA 174 |
| Chain | Residue | Details |
