1KCT	Serine Protease Inhibitor	date	Aug 06, 1996
title	Alpha1-Antitrypsin
authors	H.K.Song, S.W.Suh
compound		source
Molecule: Alpha1-Antitrypsin Chain: A Synonym: Alpha1-Proteinase Inhibitor Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: A1at Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_plasmid: Pet-8c Expression_system_gene: A1at
symmetry	Space Group: C 1 2 1	R_factor 0.184 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 114.870 39.980 92.420 90.00 102.82 90.00
method	X-Ray Diffraction	resolution	3.46 Å
Gene Ontology	Chain Function Process Component A COPII vesicle coating
Primary reference	Crystal structure of an uncleaved alpha 1-antitrypsin reveals the conformation of its inhibitory reactive loop., Song HK, Lee KN, Kwon KS, Yu MH, Suh SW, FEBS Lett 1995 Dec 18;377(2):150-4. PMID:8543039

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (55 Kb) [Save to disk] Biological Unit Coordinates (1kct.pdb1.gz) 50 Kb CSU: Contacts of Structural Units for 1KCT Likely Quarternary Molecular Structure file(s) for 1KCT Structure Factors (35 Kb) Retrieve 1KCT in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1KCT from S2C, [Save to disk] Re-refined 1kct structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1KCT 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 1KCT

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 1KCT, from MSDmotif at EBI Genome occurence of 1KCT's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1kct__, region [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: [1kct] [1kct_A] SWISS-PROT database: [P01009] Domain organization of [A1AT_HUMAN] by SWISSPFAM Domain found in 1KCT: [SERPIN ] by SMART

Other resources with information on 1KCT

Community annotation for 1KCT at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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