CATH Domain 1m9yA00

CATH Classification

Level	CATH Code	Description
	2	Mainly Beta
	2.40	Beta Barrel
	2.40.100	Cyclophilin
	2.40.100.10	Cyclophilin-like

Domain Context

CATH Clusters

Superfamily	Cyclophilin-like
Functional Family	Peptidyl-prolyl cis-trans isomerase A

Enzyme Information

5.2.1.8

Peptidylprolyl isomerase.

based on mapping to UniProt P62937

Peptidylproline (omega=180) = peptidylproline (omega=0).

-!- The first type of this enzyme found proved to be the protein cyclophilin, which binds the immunosuppressant cyclosporin A. -!- Other distinct families of the enzyme exist, one being FK-506 binding proteins (FKBP) and another that includes parvulin from Escherichia coli. -!- The three families are structurally unrelated and can be distinguished by being inhibited by cyclosporin A, FK-506 and 5-hydroxy-1,4-naphthoquinone, respectively.

UniProtKB Entries (2)

P62937	PPIA_HUMAN Homo sapiens Peptidyl-prolyl cis-trans isomerase A
Q72497	Q72497_9HIV1 Human immunodeficiency virus 1 Gag polyprotein

PDB Structure

PDB	1M9Y
External Links	PDBSum Proteopedia
Method	X-RAY DIFFRACTION
Organism	Escherichia
Primary Citation	Structural insights into the catalytic mechanism of cyclophilin A Howard, B.R., Vajdos, F.F., Li, S., Sundquist, W.I., Hill, C.P. Nat.Struct.Biol.