Crystal Structure of the Mn2+2-Human Arginase I-AGPA Complex

Binding of the unreactive substrate analog L-2-amino-3-guanidinopropionic acid (dinor-L-arginine) to human arginase I.

Cryogenically cooled double crystal monochromater with horizontal focusing sagittal bend second mono crystal with 4:1 magnification ratio and vertically focusing mirror.

MSAKSRTIGIIGAPFSKGQPRGGVEEGPTVLRKAGLLEKLKEQECDVKDYGDLPFADIPNDSPFQIVKNPRSVGKASEQL
AGKVAEVKKNGRISLVLGGDHSLAIGSISGHARVHPDLGVIWVDAHTDINTPLTTTSGNLHGQPVSFLLKELKGKIPDVP
GFSWVTPCISAKDIVYIGLRDVDPGEHYILKTLGIKYFSMTEVDRLGIGKVMEETLSYLLGRKKRPIHLSFDVDGLDPSF
TPATGTPVVGGLTYREGLYITEEIYKTGLLSGLDIMEVNPSLGKTPEEVTRTVNTAVAITLACFGLAREGNHKPIDYLNP
PK

An unliganded Mn2+2-HAI crystal was soaked in 50 mM AGPA, 5 mM MnCl2, 100 mM bicine (pH 8.5), 32% (v/v) Jeffamine ED-2001 for 21 hours, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Arginase Fold, Hydrolase, Hydrolase-Hydrolase inhibitor complex