1IB1 | pdb_00001ib1

CRYSTAL STRUCTURE OF THE 14-3-3 ZETA:SEROTONIN N-ACETYLTRANSFERASE COMPLEX

PDB DOI: https://doi.org/10.2210/pdb1IB1/pdb

Classification: SIGNALING PROTEIN/TRANSFERASE
Organism(s): Homo sapiens, Ovis aries
Expression System: Escherichia coli BL21(DE3), Escherichia coli
Mutation(s): Yes

Deposited: 2001-03-26 Released: 2001-05-02
Deposition Author(s): Obsil, T., Ghirlando, R., Klein, D.C., Ganguly, S., Dyda, F.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.70 Å
R-Value Free:
0.228 (Depositor)
R-Value Work:
0.204 (Depositor)
R-Value Observed:
0.204 (Depositor)

Starting Models: experimental
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wwPDB Validation 3D Report Full Report

This is version 1.5 of the entry. See complete history.

Literature

Crystal structure of the 14-3-3zeta:serotonin N-acetyltransferase complex. a role for scaffolding in enzyme regulation.

Obsil, T., Ghirlando, R., Klein, D.C., Ganguly, S., Dyda, F.

(2001) Cell 105: 257-267

PubMed: 11336675 Search on PubMed
DOI: https://doi.org/10.1016/s0092-8674(01)00316-6
Primary Citation Related Structures:
1IB1

PubMed Abstract:
Serotonin N-acetyltransferase (AANAT) controls the daily rhythm in melatonin synthesis. When isolated from tissue, AANAT copurifies with isoforms epsilon and zeta of 14-3-3. We have determined the structure of AANAT bound to 14-3-3zeta, an association that is phosphorylation dependent. AANAT is bound in the central channel of the 14-3-3zeta dimer, and is held in place by extensive interactions both with the amphipathic phosphopeptide binding groove of 14-3-3zeta and with other parts of the central channel. Thermodynamic and activity measurements, together with crystallographic analysis, indicate that binding of AANAT by 14-3-3zeta modulates AANAT's activity and affinity for its substrates by stabilizing a region of AANAT involved in substrate binding.

Organizational Affiliation

Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA.

Macromolecule Content

Total Structure Weight: 204.07 kDa
Atom Count: 13,407
Modeled Residue Count: 1,624
Deposited Residue Count: 1,780
Unique protein chains: 2

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
14-3-3 ZETA ISOFORM	A, B, C, D	245	Homo sapiens	Mutation(s): 0 Gene Names: YWHAZ
UniProt & NIH Common Fund Data Resources
Find proteins for P63104 (Homo sapiens) Explore P63104 Go to UniProtKB: P63104
PHAROS: P63104 GTEx: ENSG00000164924
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P63104
Sequence Annotations Expand
Reference Sequence

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| 3D Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
SEROTONIN N-ACETYLTRANSFERASE	E, F, G, H	200	Ovis aries	Mutation(s): 1 Gene Names: AANAT OR SNAT EC: 2.3.1.87
UniProt
Find proteins for Q29495 (Ovis aries) Explore Q29495 Go to UniProtKB: Q29495
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q29495
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
COT Query on COT Download:Ideal Coordinates CCD File SDF format, chain I [auth E] SDF format, chain K [auth G] SDF format, chain L [auth H] SDF format, chain J [auth F] MOL2 format, chain I [auth E] MOL2 format, chain K [auth G] MOL2 format, chain L [auth H] MOL2 format, chain J [auth F] mmCIF format, chain I [auth E] mmCIF format, chain K [auth G] mmCIF format, chain L [auth H] mmCIF format, chain J [auth F]	I [auth E], J [auth F], K [auth G], L [auth H]	COA-S-ACETYL TRYPTAMINE C₃₃ H₄₈ N₉ O₁₇ P₃ S ZRDQFWRSRPZOSQ-GMHMEAMDSA-N		Interactions Focus chain I [auth E] Focus chain J [auth F] Focus chain K [auth G] Focus chain L [auth H]

Modified Residues 1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
TPO Query on TPO	E, F, G, H	L-PEPTIDE LINKING	C₄ H₁₀ N O₆ P		THR

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.70 Å
R-Value Free: 0.228 (Depositor)
R-Value Work: 0.204 (Depositor)
R-Value Observed: 0.204 (Depositor)

Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 74.717	α = 90.144
b = 75.078	β = 90.063
c = 101.78	γ = 63.044

Software Package:

Software Name	Purpose
AMoRE	phasing
X-PLOR	refinement
SCALEPACK	data scaling

Structure Validation

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Entry History

Deposition Data

Released Date: 2001-05-02

Deposition Author(s):

Revision History (Full details and data files)

Version 1.0: 2001-05-02
Type: Initial release
Version 1.1: 2008-04-27
Changes: Version format compliance
Version 1.2: 2011-07-13
Changes: Version format compliance
Version 1.3: 2017-10-04
Changes: Refinement description
Version 1.4: 2023-08-09
Changes: Data collection, Database references, Derived calculations, Refinement description
Version 1.5: 2024-11-20
Changes: Structure summary