6IV6

Cryo-EM structure of AcrVA5-acetylated MbCas12a in complex with crRNA

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
InterPro: Protein Family Classification
Protein Modification Annotation

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	cas_Cpf1_4th	e6iv6A7	A: beta barrels	X: OB-fold	H: Small protein B (SmpB) (From Topology)	T: Small protein B (SmpB)	F: cas_Cpf1_4th	ECOD (1.6)
A	UNK_F_TYPE	e6iv6A1	A: beta barrels	X: OB-fold	H: Small protein B (SmpB) (From Topology)	T: Small protein B (SmpB)	F: UNK_F_TYPE	ECOD (1.6)
A	cas_Cpf1_3rd	e6iv6A6	A: alpha arrays	X: CRISPR-associated endonuclease Cpf1 PI (PAM-interacting) domain (From Topology)	H: CRISPR-associated endonuclease Cpf1 PI (PAM-interacting) domain (From Topology)	T: CRISPR-associated endonuclease Cpf1 PI (PAM-interacting) domain	F: cas_Cpf1_3rd	ECOD (1.6)
A	cas_Cpf1_1st	e6iv6A3	A: alpha complex topology	X: CRISPR-associated endonuclease first helical domain	H: CRISPR-associated endonuclease Cpf1 first helical domain (From Topology)	T: CRISPR-associated endonuclease Cpf1 first helical domain	F: cas_Cpf1_1st	ECOD (1.6)
A	cas_Cpf1_2nd	e6iv6A5	A: alpha complex topology	X: CRISPR-associated endonuclease Cpf1 second helical domain (From Topology)	H: CRISPR-associated endonuclease Cpf1 second helical domain (From Topology)	T: CRISPR-associated endonuclease Cpf1 second helical domain	F: cas_Cpf1_2nd	ECOD (1.6)
A	cas_Cpf1_5th	e6iv6A2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: cas_Cpf1_5th	ECOD (1.6)
A	cas_Cpf1_6th	e6iv6A4	A: few secondary structure elements	X: CRISPR-associated endonuclease Cpf1 nuclease domain (From Topology)	H: CRISPR-associated endonuclease Cpf1 nuclease domain (From Topology)	T: CRISPR-associated endonuclease Cpf1 nuclease domain	F: cas_Cpf1_6th	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF18510	Nuclease domain (NUC)	Nuclease domain	This is a nuclease (NUC) domain found in Cpf1, an RNA-guided endonuclease of a type V CRISPR-Cas system. Structural and functional analysis indicate that this domain is involved in DNA cleavage [1].	Domain
A	PF18501	Alpha helical recognition lobe domain (REC1)	Alpha helical recognition lobe domain	Cpf1 is an RNA-guided endonuclease of a type V CRISPR-Cas system. Cpf1 adopts a bilobed architecture consisting of an alpha-helical recognition (REC) lobe and a nuclease (NUC) lobe, with the small CRISPR RNAs (crRNAs)-target DNA heteroduplex bound to ...	Cpf1 is an RNA-guided endonuclease of a type V CRISPR-Cas system. Cpf1 adopts a bilobed architecture consisting of an alpha-helical recognition (REC) lobe and a nuclease (NUC) lobe, with the small CRISPR RNAs (crRNAs)-target DNA heteroduplex bound to the positively charged, central channel between the two lobes. The REC lobe consists of the REC1 and REC2 domains where REC1 comprises 13 alpha helices, and REC2 comprises ten alpha helices and two beta strands that form a small antiparallel sheet [1]. This entry represents REC1 domain.	Domain
A	PF18516	RuvC nuclease domain (RuvC_1)	RuvC nuclease domain	This is a RuvC nuclease domain found in type V CRISPR-associated protein Cas12a (Cpf1), used for genome editing applications. These proteins carry out endoribonuclease activity for processing its own guide RNAs and RNA-guided DNase activity for targe ...	This is a RuvC nuclease domain found in type V CRISPR-associated protein Cas12a (Cpf1), used for genome editing applications. These proteins carry out endoribonuclease activity for processing its own guide RNAs and RNA-guided DNase activity for target DNA cleavage. The C-terminal region of Cas12a carries the RUVC domain, NUC domain Pfam:PF18510 and the arginine-rich bridge helix (BH). Both the NUC and BH domains are nested in the RuvC domain. Mutations in the RuvC domain impair cleavage of both strands in a target DNA duplex, while a mutation in the Nuc domain impaired target strand cleavage only. This indicates that the DNA nuclease active sites are located at the interface of the RuvC and Nuc domains and that cleavage of the non-target DNA strand by the RuvC domain is a prerequisite for target strand cleavage by the Nuc domain [1].	Domain

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR040852	Cas12a, RuvC nuclease domain	Domain
A	IPR040787	Cas12a, REC1 domain	Domain
A	IPR027620	CRISPR-associated endonuclease Cas12a	Family
A	IPR040882	Cas12a, nuclease domain	Domain

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A	ALY	Parent Component: LYS RESID: AA0055 PSI-MOD : N6-acetyl-L-lysine MOD:00064

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.