Structure of PDB 7mid Chain A Binding Site BS01

Receptor Information

>7mid Chain A (length=554) Species: 243231 (Geobacter sulfurreducens PCA)

DGSIPLIPVRMLNEHVYCPRLAYLMWVQGEFSHNEFTVDGVIRHRRVDAG
GGVLPSETQEDSRIHARSVSLSSERLGITAKIDLVEGEGAYVSPVDYKRG
KRPHVAGGAYEPERVQLCAQGLLLREHGFASDGGALYFVASRERVPVAFD
DELIGRTLAAIDEMGRTALSGTMPPPLEDSPKCPRCSLVGICLPDEVRFL
SHLSVEPRPIIPADGRGLPLYVQSPKAYVRKDGDCLVIEEERVRVAEARL
GETSQVALFGNATLTTAALHECLRREIPVTWLSYGGWFMGHTVSTGHRNV
ETRTYQYQRSFDPETCLNLARRWIVAKIANCRTLLRRNWRGEGDEAKAPP
GLLMSLQDDMRHAMRAPSLEVLLGIEGASAGRYFQHFSRMLRGGDGEGMG
FDFTTRNRRPPKDPVNALLSFAYAMLTREWTVALAAVGLDPYRGFYHQPR
FGRPALALDMMEPFRPLIADSTVLMAINNGEIRTGDFVRSAGGCNLTDSA
RKRFIAGFERRMEQEVTHPIFKYTISYRRLLEVQARLLTRYLSGEIPAYP
NFVT

Ligand information

>7mid Chain E (length=24)

caccatcgtgaggcctcagctacg

Receptor-Ligand Complex Structure

Structure summary

• PDB: 7mid Mechanism for Cas4-assisted directional spacer acquisition in CRISPR-Cas.
• Resolution: 3.56 Å
• Binding residue (original residue number in PDB): Y232 K235 G237 T269 A271
• Binding residue (residue number reindexed from 1): Y228 K231 G233 T265 A267

Enzymatic activity

• Enzyme Commision number: 3.1.-.-
  3.1.12.1: 5' to 3' exodeoxyribonuclease (nucleoside 3'-phosphate-forming).

Gene Ontology

Molecular Function

• GO:0003676 nucleic acid binding
• GO:0003677 DNA binding
• GO:0004519 endonuclease activity
• GO:0004527 exonuclease activity
• GO:0046872 metal ion binding
• GO:0051539 4 iron, 4 sulfur cluster binding

Biological Process

• GO:0043571 maintenance of CRISPR repeat elements
• GO:0051607 defense response to virus

External links

• PDB: RCSB:7mid, PDBe:7mid, PDBj:7mid
• PDBsum: 7mid
• PubMed: 34588691
• UniProt: Q74H36|CS4F1_GEOSL CRISPR-associated exonuclease Cas4/endonuclease Cas1 fusion (Gene Name=cas4-cas1)