2QV4	Hydrolase	date	Aug 07, 2007
title	Human Pancreatic Alpha-Amylase Complexed With Nitrite And Ac
authors	L.K.Williams, R.Maurus, G.D.Brayer
compound		source
Molecule: Pancreatic Alpha-Amylase Chain: A Synonym: Pa, 1,4-Alpha-D- Glucan Glucanohydrolase Ec: 3.2.1.1 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Organ: Pancreas Gene: Amy2a Expression_system: Pichia Pastoris Expression_system_taxid: 4922
symmetry	Space Group: P 21 21 21	R_factor 0.176 R_Free 0.224
crystal cell	length a length b length c angle alpha angle beta angle gamma 51.859 67.723 130.099 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.97 Å
ligand	CA, NAG, NO2, PCA, QV4	enzyme	Hydrolase E.C.3.2.1.1 BRENDA
Gene Ontology	Chain Function Process Component A
Primary reference	Alternative catalytic anions differentially modulate human alpha-amylase activity and specificity(,)., Maurus R, Begum A, Williams LK, Fredriksen JR, Zhang R, Withers SG, Brayer GD, Biochemistry. 2008 Mar 18;47(11):3332-44. Epub 2008 Feb 20. PMID:18284212

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (93 Kb) [Save to disk] Biological Unit Coordinates (2qv4.pdb1.gz) 88 Kb LPC: Ligand-Protein Contacts for 2QV4 CSU: Contacts of Structural Units for 2QV4 Likely Quarternary Molecular Structure file(s) for 2QV4 Structure Factors (258 Kb) Retrieve 2QV4 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2QV4 from S2C, [Save to disk] Re-refined 2qv4 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2QV4 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 2QV4

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 2QV4, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2qv4] [2qv4_A] SWISS-PROT database: [P04746] Domain organization of [AMYP_HUMAN] by SWISSPFAM Domains found in 2QV4: [Aamy] [Aamy_C ] by SMART

Other resources with information on 2QV4

Community annotation for 2QV4 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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