PDBsum entry 3iti

Hydrolase

PDB id: 3iti

Contents

Protein chain

223 a.a. *

Ligands

BRV

BEN

Metals

_CL

_CA

Waters ×243

* Residue conservation analysis

PDB id:

3iti

Name:

Hydrolase

Title:

Structure of bovine trypsin with the mad triangle b3c

Structure:

Cationic trypsin. Chain: a. Synonym: beta-trypsin, alpha-trypsin chain 1, alpha-trypsin chain 2. Ec: 3.4.21.4

Source:

Bos taurus. Bovine,cow,domestic cattle,domestic cow. Organism_taxid: 9913

Resolution:

1.55Å R-factor: 0.168 R-free: 0.213

Authors:

T.Beck,C.E.Da Cunha,G.M.Sheldrick

Key ref:

T.Beck et al. (2009). How to get the magic triangle and the MAD triangle into your protein crystal. Acta Crystallogr Sect F Struct Biol Cryst Commun, 65, 1068-1070. PubMed id: 19851024

Date:

28-Aug-09 Release date: 27-Oct-09

Protein chain

P00760  (TRY1_BOVIN) -  Serine protease 1 from Bos taurus

Seq: 246 a.a.

Struc: 223 a.a.

Enzyme reactions

• Enzyme class: E.C.3.4.21.4 - trypsin.
• Reaction: Preferential cleavage: Arg-|-Xaa, Lys-|-Xaa.

Acta Crystallogr Sect F Struct Biol Cryst Commun 65:1068-1070 (2009)

PubMed id: 19851024

How to get the magic triangle and the MAD triangle into your protein crystal.

T.Beck, C.E.da Cunha, G.M.Sheldrick.

ABSTRACT

The magic triangle 5-amino-2,4,6-triiodoisophthalic acid (I3C) and the MAD triangle 5-amino-2,4,6-tribromoisophthalic acid (B3C) are two representatives of a novel class of compounds that combine heavy atoms for experimental phasing with functional groups for protein interactions. These compounds are readily available and provide easy access to experimental phasing. The preparation of stock solutions and the incorporation of the compounds into protein crystals are discussed. As an example of incorporation via cocrystallization, the incorporation of B3C into bovine trypsin, resulting in a single site with high occupancy, is described.