6I1K
Crystal structure of catalytically inactive FnCas12a in complex with a crRNA guide and a dsDNA target
Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0003677 | molecular_function | DNA binding |
| A | 0003723 | molecular_function | RNA binding |
| A | 0004518 | molecular_function | nuclease activity |
| A | 0004519 | molecular_function | endonuclease activity |
| A | 0004530 | molecular_function | deoxyribonuclease I activity |
| A | 0006259 | biological_process | DNA metabolic process |
| A | 0016787 | molecular_function | hydrolase activity |
| A | 0016829 | molecular_function | lyase activity |
| A | 0051607 | biological_process | defense response to virus |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 8 |
| Details | binding site for residue MG A 1401 |
| Chain | Residue |
| A | ASP792 |
| A | ARG800 |
| A | HOH1502 |
| A | HOH1507 |
| B | U-4 |
| B | A-3 |
| B | HOH201 |
| B | HOH203 |
| site_id | AC2 |
| Number of Residues | 6 |
| Details | binding site for residue MG A 1402 |
| Chain | Residue |
| A | HOH1519 |
| A | HOH1524 |
| A | HOH1530 |
| A | HOH1545 |
| B | HOH204 |
| A | HOH1517 |
| site_id | AC3 |
| Number of Residues | 6 |
| Details | binding site for residue MG A 1403 |
| Chain | Residue |
| A | ASN700 |
| A | HOH1529 |
| D | HOH101 |
| D | HOH103 |
| D | HOH105 |
| D | HOH106 |
| site_id | AC4 |
| Number of Residues | 6 |
| Details | binding site for residue MG A 1404 |
| Chain | Residue |
| A | GLU827 |
| A | HOH1501 |
| A | HOH1516 |
| A | HOH1536 |
| A | HOH1539 |
| A | HOH1540 |
| site_id | AC5 |
| Number of Residues | 6 |
| Details | binding site for residue MG A 1405 |
| Chain | Residue |
| A | LEU66 |
| A | SER67 |
| A | VAL69 |
| A | TYR248 |
| A | ASN270 |
| A | HOH1512 |
| site_id | AC6 |
| Number of Residues | 7 |
| Details | binding site for residue MG A 1406 |
| Chain | Residue |
| A | ASN602 |
| A | THR604 |
| A | ASP616 |
| A | LYS635 |
| A | HOH1521 |
| D | HOH102 |
| D | HOH104 |
| site_id | AC7 |
| Number of Residues | 6 |
| Details | binding site for residue MG A 1407 |
| Chain | Residue |
| A | HOH1527 |
| A | HOH1528 |
| A | HOH1532 |
| A | HOH1533 |
| A | HOH1546 |
| B | HOH216 |
| site_id | AC8 |
| Number of Residues | 4 |
| Details | binding site for residue MG A 1408 |
| Chain | Residue |
| A | PHE153 |
| A | ASN156 |
| A | ILE159 |
| A | THR160 |
| site_id | AC9 |
| Number of Residues | 3 |
| Details | binding site for residue MG A 1409 |
| Chain | Residue |
| A | TRP175 |
| A | GLU601 |
| A | SER603 |
| site_id | AD1 |
| Number of Residues | 4 |
| Details | binding site for residue EDO A 1410 |
| Chain | Residue |
| A | GLU756 |
| A | ASN759 |
| A | GLN760 |
| A | LYS889 |
| site_id | AD2 |
| Number of Residues | 2 |
| Details | binding site for residue EDO A 1411 |
| Chain | Residue |
| A | SER12 |
| A | PHE888 |
| site_id | AD3 |
| Number of Residues | 6 |
| Details | binding site for residue EDO A 1412 |
| Chain | Residue |
| A | LYS32 |
| A | GLY35 |
| A | LEU36 |
| A | ILE37 |
| A | LEU38 |
| A | LYS435 |
| site_id | AD4 |
| Number of Residues | 5 |
| Details | binding site for residue EDO A 1413 |
| Chain | Residue |
| A | ASN305 |
| A | LYS317 |
| A | LYS320 |
| C | DG-17 |
| C | DA-16 |
| site_id | AD5 |
| Number of Residues | 4 |
| Details | binding site for residue EDO A 1414 |
| Chain | Residue |
| A | ARG18 |
| A | LYS595 |
| A | HIS881 |
| B | U-15 |
| site_id | AD6 |
| Number of Residues | 6 |
| Details | binding site for residue MG B 101 |
| Chain | Residue |
| A | HOH1525 |
| A | HOH1543 |
| B | HOH202 |
| B | HOH205 |
| B | HOH208 |
| B | HOH213 |
| site_id | AD7 |
| Number of Residues | 6 |
| Details | binding site for residue MG B 102 |
| Chain | Residue |
| A | HOH1534 |
| A | HOH1541 |
| B | A6 |
| B | HOH209 |
| B | HOH212 |
| B | HOH214 |
| site_id | AD8 |
| Number of Residues | 2 |
| Details | binding site for residue EDO B 103 |
| Chain | Residue |
| B | U4 |
| B | U5 |
| site_id | AD9 |
| Number of Residues | 3 |
| Details | binding site for residue EDO B 104 |
| Chain | Residue |
| B | A8 |
| B | A9 |
| B | EDO105 |
| site_id | AE1 |
| Number of Residues | 3 |
| Details | binding site for residue EDO B 105 |
| Chain | Residue |
| B | G10 |
| B | EDO104 |
| B | EDO107 |
| site_id | AE2 |
| Number of Residues | 3 |
| Details | binding site for residue EDO B 106 |
| Chain | Residue |
| B | A19 |
| B | U20 |
| B | HOH204 |
| site_id | AE3 |
| Number of Residues | 3 |
| Details | binding site for residue EDO B 107 |
| Chain | Residue |
| B | G10 |
| B | G11 |
| B | EDO105 |
| site_id | AE4 |
| Number of Residues | 1 |
| Details | binding site for residue EDO B 108 |
| Chain | Residue |
| B | A7 |
| site_id | AE5 |
| Number of Residues | 1 |
| Details | binding site for residue EDO C 101 |
| Chain | Residue |
| C | DT-1 |
| site_id | AE6 |
| Number of Residues | 2 |
| Details | binding site for residue EDO C 102 |
| Chain | Residue |
| C | DT-14 |
| C | DA-15 |
| site_id | AE7 |
| Number of Residues | 4 |
| Details | binding site for residue EDO C 103 |
| Chain | Residue |
| C | DG4 |
| C | DG5 |
| C | DA6 |
| D | DT-6 |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 314 |
| Details | Region: {"description":"Recognition domain 1","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000303"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000303"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI2 |
| Number of Residues | 8 |
| Details | Region: {"description":"Binds crRNA alone and in crRNA-target DNA heteroduplex","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI3 |
| Number of Residues | 4 |
| Details | Region: {"description":"Binds DNA in crRNA-target DNA heteroduplex","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI4 |
| Number of Residues | 3 |
| Details | Region: {"description":"Binds crRNA in crRNA-target DNA heteroduplex","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI5 |
| Number of Residues | 251 |
| Details | Region: {"description":"Recognition domain 2","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000303"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000303"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI6 |
| Number of Residues | 3 |
| Details | Region: {"description":"Binds crRNA in crRNA-target DNA heteroduplex","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI7 |
| Number of Residues | 8 |
| Details | Region: {"description":"Binds crRNA","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI8 |
| Number of Residues | 70 |
| Details | Region: {"description":"Wedge region 2","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000303"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000303"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI9 |
| Number of Residues | 17 |
| Details | Region: {"description":"LKL, important for PAM recognition and DNA unwinding","evidences":[{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000305"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI10 |
| Number of Residues | 99 |
| Details | Region: {"description":"PAM-interacting domain (PI)","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000303"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000303"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI11 |
| Number of Residues | 6 |
| Details | Region: {"description":"Binds DNA protospacer adjacent motif (PAM) on target DNA","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI12 |
| Number of Residues | 12 |
| Details | Region: {"description":"Binds single-strand non-target DNA","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI13 |
| Number of Residues | 8 |
| Details | Region: {"description":"Binds crRNA","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI14 |
| Number of Residues | 60 |
| Details | Region: {"description":"RuvC-I","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000303"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000303"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI15 |
| Number of Residues | 17 |
| Details | Region: {"description":"Bridge helix","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000303"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000303"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI16 |
| Number of Residues | 106 |
| Details | Region: {"description":"RuvC-II","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000303"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000303"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI17 |
| Number of Residues | 45 |
| Details | Region: {"description":"RuvC-III","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000303"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000303"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI18 |
| Number of Residues | 3 |
| Details | Active site: {"description":"For pre-crRNA processing","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000305"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI19 |
| Number of Residues | 3 |
| Details | Active site: {"description":"For DNase activity of RuvC domain","evidences":[{"source":"PubMed","id":"26422227","evidenceCode":"ECO:0000305"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI20 |
| Number of Residues | 1 |
| Details | Site: {"description":"Binds crRNA alone and in crRNA-target DNA heteroduplex","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI21 |
| Number of Residues | 1 |
| Details | Site: {"description":"Binds target strand DNA","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI22 |
| Number of Residues | 1 |
| Details | Site: {"description":"Binds crRNA in crRNA-target DNA heteroduplex","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI23 |
| Number of Residues | 3 |
| Details | Site: {"description":"Binds DNA in crRNA-target DNA heteroduplex","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI24 |
| Number of Residues | 1 |
| Details | Site: {"description":"Caps the crRNA-target DNA heteroduplex","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000305"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI25 |
| Number of Residues | 1 |
| Details | Site: {"description":"Binds DNA protospacer adjacent motif (PAM)","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI26 |
| Number of Residues | 1 |
| Details | Site: {"description":"Binds Target strand DNA","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI27 |
| Number of Residues | 1 |
| Details | Site: {"description":"Binds PAM","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI28 |
| Number of Residues | 2 |
| Details | Site: {"description":"Binds Target strand DNA","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI29 |
| Number of Residues | 1 |
| Details | Site: {"description":"Binds Target strand DNA; via amide nitrogen","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI30 |
| Number of Residues | 1 |
| Details | Site: {"description":"Binds crRNA","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI31 |
| Number of Residues | 1 |
| Details | Site: {"description":"Stabilizes transition state for pre-crRNA processing","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000305"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI32 |
| Number of Residues | 2 |
| Details | Site: {"description":"Binds DNA in crRNA-target DNA heteroduplex","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |






