2AAI	Hydrolase	date	Sep 07, 1993
title	Crystallographic Refinement Of Ricin To 2.5 Angstroms
authors	E.Rutenber, B.J.Katzin, W.Montfort, J.E.Villafranca, S.R.Ernst, E.J.Collins, D.Mlsna, A.F.Monzingo, M.P.Ready, J.D.Robertus
compound		source
Molecule: Ricin (A Chain) Chain: A Ec: 3.2.2.22 Engineered: Yes		Organism_scientific: Ricinus Communis Organism_common: Castor Bean Organism_taxid: 3988
Molecule: Ricin (B Chain) Chain: B Ec: 3.2.2.22 Engineered: Yes
symmetry	Space Group: P 21 21 21	R_factor 0.212 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 72.740 78.490 114.340 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand	BGC, BMA, GAL, MAN, NAG	enzyme	Hydrolase E.C.3.2.2.22 BRENDA
note	2AAI (Molecule of the Month:pdb69, pdb161)
related structures	by homologous chain: 1BR5, 1IL4, 1PUM, 1RZO, 2MLL
Gene Ontology	Chain Function Process Component A B
Primary reference	Crystallographic refinement of ricin to 2.5 A., Rutenber E, Katzin BJ, Ernst S, Collins EJ, Mlsna D, Ready MP, Robertus JD, Proteins 1991;10(3):240-50. PMID:1881880

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (94 Kb) [Save to disk] Biological Unit Coordinates (2aai.pdb1.gz) 87 Kb LPC: Ligand-Protein Contacts for 2AAI CSU: Contacts of Structural Units for 2AAI Likely Quarternary Molecular Structure file(s) for 2AAI Retrieve 2AAI in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2AAI from S2C, [Save to disk]

View 2AAI in 3D

Proteopedia, because life has more than 2D. On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure. On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.

Visual 3D analysis of 2AAI

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 2AAI, from MSDmotif at EBI Genome occurence of 2AAI's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d2aaia_, region A [Jmol] [rasmolscript] [script source]     - Domain d2aaib1, region B:1-135 [Jmol] [rasmolscript] [script source]     - Domain d2aaib2, region B:136-262 [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2aai_A] [2aai] [2aai_B] SWISS-PROT database: [P02879] Domain organization of [RICI_RICCO] by SWISSPFAM Domain found in 2AAI: [RICIN ] by SMART

Other resources with information on 2AAI

Community annotation for 2AAI at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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