2ACH	Proteinase Inhibitor	date	Apr 26, 1993
title	Crystal Structure Of Cleaved Human Alpha1-Antichymotrypsin A Angstroms Resolution And Its Comparison With Other Serpins
authors	U.Baumann, R.Huber, W.Bode, D.Grosse, M.Lesjak, C.B.Laurell
compound		source
Molecule: Alpha 1-Antichymotrypsin Chain: A Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606
Molecule: Alpha 1-Antichymotrypsin Chain: B Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606
symmetry	Space Group: P 41 21 2	R_factor 0.181 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 75.300 75.300 208.000 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.70 Å
ligand	BMA, NAG, PO4	enzyme
related structures	by homologous chain: 3CAA, 4CAA
Gene Ontology	Chain Function Process Component A
Primary reference	Crystal structure of cleaved human alpha 1-antichymotrypsin at 2.7 A resolution and its comparison with other serpins., Baumann U, Huber R, Bode W, Grosse D, Lesjak M, Laurell CB, J Mol Biol 1991 Apr 5;218(3):595-606. PMID:2016749

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (67 Kb) [Save to disk] Biological Unit Coordinates (2ach.pdb1.gz) 62 Kb Biological Unit Coordinates (2ach.pdb2.gz) 124 Kb LPC: Ligand-Protein Contacts for 2ACH CSU: Contacts of Structural Units for 2ACH Likely Quarternary Molecular Structure file(s) for 2ACH Structure Factors (106 Kb) Retrieve 2ACH in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2ACH from S2C, [Save to disk] Re-refined 2ach structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2ACH 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 2ACH

Ramachandran plot from PDBSum

Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 2ACH, from MSDmotif at EBI Genome occurence of 2ACH's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d2ach.1, region A:,B [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: [2ach_A] [2ach] [2ach_B] SWISS-PROT database: [P01011] Domain organization of [AACT_HUMAN] by SWISSPFAM Domain found in 2ACH: [SERPIN ] by SMART

Other resources with information on 2ACH

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

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