5U9L

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF13355	e5u9lA1	A: a+b two layers	X: Cystatin-like	H: NTF2-like (From Topology)	T: NTF2-like	F: PF13355	ECOD (1.6)
B	PF13355	e5u9lB1	A: a+b two layers	X: Cystatin-like	H: NTF2-like (From Topology)	T: NTF2-like	F: PF13355	ECOD (1.6)

Chains	Accession	Name	Description	Comments	Source
A, B	PF13355	ARC6-like, IMS domain (ARC6-like_IMS)	ARC6-like, IMS domain	This domain corresponds to the C-terminal intermembrane space (IMS) region from protein accumulation and replication of chloroplasts 6 (ARC6) and its paralogue PARC6 [1]. ARC6 and PARC6 are components of the plastid division machinery which are essen ...	This domain corresponds to the C-terminal intermembrane space (IMS) region from protein accumulation and replication of chloroplasts 6 (ARC6) and its paralogue PARC6 [1]. ARC6 and PARC6 are components of the plastid division machinery which are essential for the chloroplast replication process [1,2], which implies the assembly and constriction of the tubulin-like FtsZ ring on the stromal surface of the inner envelope membrane (IEM) and the dynamin-like ARC5 ring on the cytosolic surface of the outer envelope membrane (OEM). ARC6 is evolutionarily related to the cyanobacterial cell division protein Ftn2/ZipN [1], having similar structures. This domain from ARC6 and PARC6 interacts with PDV2 and PDV1 respectively. PDV proteins recruit dynamin-like ARC5 ring to the chloroplast surface and mediates its constriction. ARC6/PARC6 are key to connect and coordinate Fst and ARC5 rings during fission [3,4].	Domain

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	PARALOG OF ACCUMULATION AND REPLICATION OF CHLOROPLASTS 6 (PARC6)	-	cellular component organization organelle organization organelle fission cellular process cellular component organization or biogenesis plastid fission chloroplast fission plastid organization chloroplast organization	membrane-bounded organelle intracellular organelle intracellular anatomical structure plastid organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle chloroplast plastid membrane organelle inner membrane membrane chloroplast envelope plastid inner membrane membrane-bounded organelle intracellular organelle intracellular anatomical structure plastid organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle chloroplast plastid membrane organelle inner membrane membrane chloroplast envelope plastid inner membrane organelle envelope chloroplast membrane chloroplast inner membrane organelle membrane plastid envelope