3FLL

Crystal structure of E55Q mutant of nitrophorin 4

Summary for 3FLL

Entry DOI	10.2210/pdb3fll/pdb
Related	1D2U
Descriptor	Nitrophorin-4, PROTOPORPHYRIN IX CONTAINING FE, AMMONIA, ... (4 entities in total)
Functional Keywords	beta barrel, lipocalin, heme, mutant, ammonia, iron, metal-binding, secreted, vasoactive, vasodilator, transport protein
Biological source	Rhodnius prolixus (Triatomid bug)
Cellular location	Secreted: Q94734
Total number of polymer chains	1
Total formula weight	20925.20
Authors	Montfort, W.R.,Weichsel, A. (deposition date: 2008-12-18, release date: 2009-02-10, Last modification date: 2023-09-06)
Primary citation	Berry, R.E.,Shokhirev, M.N.,Ho, A.Y.,Yang, F.,Shokhireva, T.K.,Zhang, H.,Weichsel, A.,Montfort, W.R.,Walker, F.A. Effect of mutation of carboxyl side-chain amino acids near the heme on the midpoint potentials and ligand binding constants of nitrophorin 2 and its NO, histamine, and imidazole complexes. J.Am.Chem.Soc., 131:2313-2327, 2009 Cited by PubMed: 19175316 DOI: 10.1021/ja808105d PDB entries with the same primary citation
Experimental method	X-RAY DIFFRACTION (1.5 Å)

Structure validation