Structure of PDB 1cyq Chain B

Receptor sequence
>1cyqB (length=162) Species: 5791 (Physarum polycephalum) [Search protein sequence]
ALTNAQILAVIDSWEETVGQFPVITHHVPLGGGLQGTLHCYEIPLAAPYG
VGFAKNGPTRWQYKRTINQVVHRWGSHTVPFLLEPDNINGKTCTASALCH
NTRCHNPLHLCWESLDDNKGRNWCPGPNGGCVHAVVCLRQGPLYGPGATV
AGPQQRGSHFVV
3D structure
PDB1cyq A novel endonuclease mechanism directly visualized for I-PpoI.
ChainB
Resolution1.93 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) N319
Catalytic site (residue number reindexed from 1) N118
Enzyme Commision number 3.1.-.-
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 dna B N257 R261 Q263 R274 T279 T295 A296 A298 N319 N323 N56 R60 Q62 R73 T78 T94 A95 A97 N118 N122
BS02 dna B A248 P249 V252 G253 K256 N257 A47 P48 V51 G52 K55 N56
BS03 ZN B C325 C332 H334 C338 C124 C131 H133 C137
BS04 ZN B C241 C300 C305 H310 C40 C99 C104 H109
Gene Ontology
Molecular Function
GO:0004519 endonuclease activity
Biological Process
GO:0006314 intron homing

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Molecular Function
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Biological Process
External links
PDB RCSB:1cyq, PDBe:1cyq, PDBj:1cyq
PDBsum1cyq
PubMed10581547
UniProtQ94702|PPO1_PHYPO Intron-encoded endonuclease I-PpoI

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