6I1L
Crystal structure of FnCas12a in complex with a crRNA guide and ssDNA 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 |
| D | 0003677 | molecular_function | DNA binding |
| D | 0003723 | molecular_function | RNA binding |
| D | 0004518 | molecular_function | nuclease activity |
| D | 0004519 | molecular_function | endonuclease activity |
| D | 0004530 | molecular_function | deoxyribonuclease I activity |
| D | 0006259 | biological_process | DNA metabolic process |
| D | 0016787 | molecular_function | hydrolase activity |
| D | 0016829 | molecular_function | lyase activity |
| D | 0051607 | biological_process | defense response to virus |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 6 |
| Details | binding site for residue MG A 1401 |
| Chain | Residue |
| A | ASN602 |
| A | THR604 |
| A | ASP616 |
| A | HOH1510 |
| A | HOH1530 |
| A | HOH1536 |
| site_id | AC2 |
| Number of Residues | 6 |
| Details | binding site for residue MG A 1402 |
| Chain | Residue |
| A | HOH1526 |
| A | HOH1535 |
| A | HOH1540 |
| A | HOH1501 |
| A | HOH1503 |
| A | HOH1521 |
| site_id | AC3 |
| Number of Residues | 6 |
| Details | binding site for residue MG A 1403 |
| Chain | Residue |
| A | CYS70 |
| A | HOH1538 |
| A | HOH1541 |
| A | HOH1542 |
| A | HOH1544 |
| A | HOH1545 |
| site_id | AC4 |
| Number of Residues | 6 |
| Details | binding site for residue MG A 1404 |
| Chain | Residue |
| A | ARG800 |
| A | HOH1502 |
| A | HOH1523 |
| B | A-3 |
| B | HOH203 |
| B | HOH205 |
| site_id | AC5 |
| Number of Residues | 4 |
| Details | binding site for residue CIT A 1405 |
| Chain | Residue |
| A | TYR773 |
| A | SER776 |
| A | GLN780 |
| A | LYS782 |
| site_id | AC6 |
| Number of Residues | 4 |
| Details | binding site for residue CIT A 1406 |
| Chain | Residue |
| A | LEU13 |
| A | SER14 |
| A | GLU1062 |
| B | A1 |
| site_id | AC7 |
| Number of Residues | 5 |
| Details | binding site for residue CIT A 1407 |
| Chain | Residue |
| A | ALA1079 |
| A | PHE1081 |
| A | THR1082 |
| A | SER1083 |
| A | LYS1084 |
| site_id | AC8 |
| Number of Residues | 2 |
| Details | binding site for residue K A 1408 |
| Chain | Residue |
| A | ILE586 |
| A | GLN588 |
| site_id | AC9 |
| Number of Residues | 2 |
| Details | binding site for residue K A 1409 |
| Chain | Residue |
| A | HIS990 |
| B | A-1 |
| site_id | AD1 |
| Number of Residues | 3 |
| Details | binding site for residue K A 1410 |
| Chain | Residue |
| A | ARG18 |
| B | U-15 |
| B | CIT102 |
| site_id | AD2 |
| Number of Residues | 3 |
| Details | binding site for residue K A 1411 |
| Chain | Residue |
| A | LEU66 |
| A | VAL69 |
| A | TYR248 |
| site_id | AD3 |
| Number of Residues | 1 |
| Details | binding site for residue K A 1412 |
| Chain | Residue |
| A | ASP261 |
| site_id | AD4 |
| Number of Residues | 6 |
| Details | binding site for residue MG B 101 |
| Chain | Residue |
| A | HOH1529 |
| B | HOH201 |
| B | HOH204 |
| B | HOH206 |
| B | HOH208 |
| B | HOH210 |
| site_id | AD5 |
| Number of Residues | 4 |
| Details | binding site for residue CIT B 102 |
| Chain | Residue |
| A | ARG18 |
| A | ARG833 |
| A | K1410 |
| B | U-14 |
| site_id | AD6 |
| Number of Residues | 2 |
| Details | binding site for residue CIT B 103 |
| Chain | Residue |
| A | LYS852 |
| B | A-18 |
| site_id | AD7 |
| Number of Residues | 1 |
| Details | binding site for residue K B 104 |
| Chain | Residue |
| B | A-1 |
| site_id | AD8 |
| Number of Residues | 6 |
| Details | binding site for residue MG D 1401 |
| Chain | Residue |
| D | ASN602 |
| D | THR604 |
| D | ASP616 |
| D | HOH1510 |
| D | HOH1519 |
| D | HOH1522 |
| site_id | AD9 |
| Number of Residues | 6 |
| Details | binding site for residue MG D 1402 |
| Chain | Residue |
| D | ARG800 |
| D | HOH1507 |
| D | HOH1515 |
| E | A-3 |
| E | HOH201 |
| E | HOH204 |
| site_id | AE1 |
| Number of Residues | 6 |
| Details | binding site for residue MG D 1403 |
| Chain | Residue |
| D | HOH1502 |
| D | HOH1505 |
| D | HOH1506 |
| D | HOH1525 |
| D | HOH1526 |
| E | HOH210 |
| site_id | AE2 |
| Number of Residues | 4 |
| Details | binding site for residue CIT D 1404 |
| Chain | Residue |
| D | TYR773 |
| D | SER776 |
| D | GLN780 |
| D | LYS782 |
| site_id | AE3 |
| Number of Residues | 4 |
| Details | binding site for residue CIT D 1405 |
| Chain | Residue |
| D | ARG18 |
| D | ARG833 |
| D | K1408 |
| E | U-14 |
| site_id | AE4 |
| Number of Residues | 5 |
| Details | binding site for residue CIT D 1406 |
| Chain | Residue |
| D | GLY174 |
| D | TRP175 |
| D | THR176 |
| D | THR177 |
| D | HOH1510 |
| site_id | AE5 |
| Number of Residues | 2 |
| Details | binding site for residue K D 1407 |
| Chain | Residue |
| D | ARG43 |
| D | SER171 |
| site_id | AE6 |
| Number of Residues | 2 |
| Details | binding site for residue K D 1408 |
| Chain | Residue |
| D | HIS881 |
| D | CIT1405 |
| site_id | AE7 |
| Number of Residues | 1 |
| Details | binding site for residue K D 1409 |
| Chain | Residue |
| D | THR160 |
| site_id | AE8 |
| Number of Residues | 2 |
| Details | binding site for residue K D 1410 |
| Chain | Residue |
| D | SER603 |
| D | LYS635 |
| site_id | AE9 |
| Number of Residues | 2 |
| Details | binding site for residue K D 1411 |
| Chain | Residue |
| D | GLU1033 |
| E | CIT102 |
| site_id | AF1 |
| Number of Residues | 6 |
| Details | binding site for residue MG E 101 |
| Chain | Residue |
| D | HOH1524 |
| E | HOH202 |
| E | HOH203 |
| E | HOH206 |
| E | HOH207 |
| E | HOH211 |
| site_id | AF2 |
| Number of Residues | 4 |
| Details | binding site for residue CIT E 102 |
| Chain | Residue |
| D | LEU13 |
| D | SER14 |
| D | K1411 |
| E | A1 |
| site_id | AF3 |
| Number of Residues | 3 |
| Details | binding site for residue CIT E 103 |
| Chain | Residue |
| D | GLU1033 |
| E | A1 |
| E | G2 |
| site_id | AF4 |
| Number of Residues | 4 |
| Details | binding site for residue CIT E 104 |
| Chain | Residue |
| D | ASN683 |
| D | HIS843 |
| D | LYS852 |
| E | A-18 |
| site_id | AF5 |
| Number of Residues | 2 |
| Details | binding site for residue K E 105 |
| Chain | Residue |
| E | C-13 |
| E | U-14 |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 628 |
| 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 | 16 |
| 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 | 8 |
| 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 | 6 |
| 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 | 6 |
| 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_FI6 |
| Number of Residues | 16 |
| Details | Region: {"description":"Binds crRNA","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI7 |
| Number of Residues | 140 |
| 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_FI8 |
| Number of Residues | 34 |
| 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_FI9 |
| Number of Residues | 198 |
| 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_FI10 |
| Number of Residues | 12 |
| 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_FI11 |
| Number of Residues | 24 |
| Details | Region: {"description":"Binds single-strand non-target DNA","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI12 |
| Number of Residues | 20 |
| 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_FI13 |
| 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_FI14 |
| Number of Residues | 34 |
| 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_FI15 |
| Number of Residues | 6 |
| Details | Active site: {"description":"For pre-crRNA processing","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000305"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI16 |
| Number of Residues | 6 |
| 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_FI17 |
| Number of Residues | 2 |
| 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_FI18 |
| Number of Residues | 2 |
| Details | Site: {"description":"Binds target strand DNA","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI19 |
| Number of Residues | 2 |
| 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_FI20 |
| Number of Residues | 6 |
| 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_FI21 |
| Number of Residues | 2 |
| Details | Site: {"description":"Caps the crRNA-target DNA heteroduplex","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000305"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI22 |
| Number of Residues | 2 |
| 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_FI23 |
| Number of Residues | 2 |
| Details | Site: {"description":"Binds Target strand DNA","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI24 |
| Number of Residues | 2 |
| 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_FI25 |
| Number of Residues | 4 |
| 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_FI26 |
| Number of Residues | 2 |
| 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_FI27 |
| Number of Residues | 2 |
| Details | Site: {"description":"Binds crRNA","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI28 |
| Number of Residues | 2 |
| 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_FI29 |
| Number of Residues | 4 |
| 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 |
| site_id | SWS_FT_FI30 |
| Number of Residues | 129 |
| Details | Region: {"description":"Wedge region 3","evidences":[{"source":"PubMed","id":"28431230","evidenceCode":"ECO:0000303"},{"source":"PubMed","id":"28562584","evidenceCode":"ECO:0000303"}]} |
| Chain | Residue | Details |






