1
|
Finney AR, Innocenti Malini R, Freeman CL, Harding JH. Amino Acid and Oligopeptide Effects on Calcium Carbonate Solutions. CRYSTAL GROWTH & DESIGN 2020; 20:3077-3092. [PMID: 32581657 PMCID: PMC7304842 DOI: 10.1021/acs.cgd.9b01693] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 04/08/2020] [Indexed: 05/04/2023]
Abstract
Biological organisms display sophisticated control of nucleation and crystallization of minerals. In order to mimic living systems, deciphering the mechanisms by which organic molecules control the formation of mineral phases from solution is a key step. We have used computer simulations to investigate the effects of the amino acids arginine, aspartic acid, and glycine on species that form in solutions of calcium carbonate (CaCO3) at lower and higher levels of supersaturation. This provides net positive, negative, and neutral additives. In addition, we have prepared simulations containing hexapeptides of the amino acids to consider the effect of additive size on the solution species. We find that additives have limited impact on the formation of extended, liquid-like CaCO3 networks in supersaturated solutions. Additives control the amount of (bi)carbonate in solution, but more importantly, they are able to stabilize these networks on the time scales of the simulations. This is achieved by coordinating the networks and assembled additive clusters in solutions. The association leads to subtle changes in the coordination of CaCO3 and reduced mobility of the cations. We find that the number of solute association sites and the size and topology of the additives are more important than their net charge. Our results help to understand why polymer additives are so effective at stabilizing dense liquid CaCO3 phases.
Collapse
Affiliation(s)
- Aaron R. Finney
- Department
of Materials Science and Engineering, University
of Sheffield, Sheffield S1 3JD, United Kingdom
- Department
of Chemical Engineering, University College
London, London WC1E 6BT, United Kingdom
- E-mail:
| | - Riccardo Innocenti Malini
- Laboratory
for Biomimetic Membranes and Textiles, EMPA,
Swiss Federal Laboratories for Materials Science and Technology, St. Gallen 9014, Switzerland
| | - Colin L. Freeman
- Department
of Materials Science and Engineering, University
of Sheffield, Sheffield S1 3JD, United Kingdom
| | - John H. Harding
- Department
of Materials Science and Engineering, University
of Sheffield, Sheffield S1 3JD, United Kingdom
| |
Collapse
|
2
|
Montoya G, Correa R, Arenas J, Hoz L, Romo E, Arroyo R, Zeichner-David M, Arzate H. Cementum protein 1-derived peptide (CEMP 1-p1) modulates hydroxyapatite crystal formation in vitro. J Pept Sci 2019; 25:e3211. [PMID: 31410920 DOI: 10.1002/psc.3211] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/25/2019] [Accepted: 07/26/2019] [Indexed: 01/10/2023]
Abstract
A cementum protein 1-derived peptide (CEMP1-p1) consisting of 20 amino acids from the CEMP1's N-terminus region: MGTSSTDSQQAGHRRCSTSN, and its role on the mineralization process in a cell-free system, was characterized. CEMP1-p1's physicochemical properties, crystal formation, and hydroxyapatite (HA) nucleation assays were performed. Crystals induced by CEMP1-p1 were analyzed by scanning electron microscopy, Fourier-transform infrared spectroscopy-attenuated total reflectance (FTIR-ATR), X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), and atomic force microscopy. The results indicate that CEMP1-p1 lacks secondary structure, forms nanospheres that organize into three-dimensional structures, possesses affinity to HA, and induces its nucleation. CEMP1-p1 promotes the formation of spherical structures composed by densely packed prism-like crystals, which revealed a Ca/P ratio of 1.56, corresponding to HA. FTIR-ATR showed predominant spectrum peaks that correspond and are characteristic of HA and octacalcium phosphate (OCP). Analysis by XRD indicates that the crystals show planes with a preferential crystalline orientation for HA and for OCP. HRTEM showed interplanar distances that correspond to crystalline planes of HA and OCP. Crystals are composed by superimposed lamellae, which exhibit epitaxial growth, and each layer of the crystals is structured by nanocrystals. This study reveals that CEMP1-p1 regulates HA crystal formation, somehow mimicking the in vivo process of mineralized tissues bioformation.
Collapse
Affiliation(s)
- Gonzalo Montoya
- Laboratorio de Biología Periodontal, Facultad de Odontología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Rodrigo Correa
- Laboratorio de Biología Periodontal, Facultad de Odontología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Jesús Arenas
- Instituto de Física, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Lía Hoz
- Laboratorio de Biología Periodontal, Facultad de Odontología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Enrique Romo
- Laboratorio de Biología Periodontal, Facultad de Odontología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Rita Arroyo
- Laboratorio de Biología Periodontal, Facultad de Odontología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | | | - Higinio Arzate
- Laboratorio de Biología Periodontal, Facultad de Odontología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| |
Collapse
|
3
|
Evans JS. The Biomineralization Proteome: Protein Complexity for a Complex Bioceramic Assembly Process. Proteomics 2019; 19:e1900036. [DOI: 10.1002/pmic.201900036] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 06/04/2019] [Indexed: 12/20/2022]
Affiliation(s)
- John Spencer Evans
- Laboratory for Chemical PhysicsDepartment of Skeletal and Craniofacial BiologyNew York University College of Dentistry New York NY 10010 USA
| |
Collapse
|
4
|
Evans JS. Composite Materials Design: Biomineralization Proteins and the Guided Assembly and Organization of Biomineral Nanoparticles. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E581. [PMID: 30781347 PMCID: PMC6416723 DOI: 10.3390/ma12040581] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 02/08/2019] [Accepted: 02/13/2019] [Indexed: 12/11/2022]
Abstract
There has been much discussion of the role of proteins in the calcium carbonate biomineralization process, particularly with regard to nucleation, amorphous stabilization/transformation, and polymorph selection. However, there has been little if any discussion of the potential role that proteins might play in another important process: the guided assembly and organization of mineral nanoparticles into higher-ordered structures such as mesocrystals. This review discusses particle attachment theory and recent evidence of mineral-associated proteins forming hydrogels that assemble and organize mineral clusters into crystalline phase. From this discussion we postulate a mechanism by which biomineralization protein hydrogel aggregation assists in mineral nanoparticle assembly and organization within calcium carbonate skeletal elements and discuss potentials ways for harnessing this process in materials design.
Collapse
Affiliation(s)
- John Spencer Evans
- Laboratory for Chemical Physics, Center for Skeletal and Craniofacial Biology, New York University, 345 E. 24th Street, New York, NY 10010, USA.
| |
Collapse
|
5
|
Rutter GO, Brown AH, Quigley D, Walsh TR, Allen MP. Emergence of order in self-assembly of the intrinsically disordered biomineralisation peptide n16N. MOLECULAR SIMULATION 2017. [DOI: 10.1080/08927022.2017.1405158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- G. O. Rutter
- Department of Physics, University of Warwick, Coventry, UK
| | - A. H. Brown
- Institute for Frontier Materials, Deakin University, Geelong, Australia
| | - D. Quigley
- Department of Physics, University of Warwick, Coventry, UK
| | - T. R. Walsh
- Institute for Frontier Materials, Deakin University, Geelong, Australia
| | - M. P. Allen
- Department of Physics, University of Warwick, Coventry, UK
- H. H. Wills Physics Laboratory, Bristol, UK
| |
Collapse
|
6
|
|
7
|
Perovic I, Davidyants A, Evans JS. Aragonite-Associated Mollusk Shell Protein Aggregates To Form Mesoscale "Smart" Hydrogels. ACS OMEGA 2016; 1:886-893. [PMID: 30023493 PMCID: PMC6044582 DOI: 10.1021/acsomega.6b00236] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 10/27/2016] [Indexed: 05/31/2023]
Abstract
In the mollusk shell there exists a framework silk fibroin-polysaccharide hydrogel coating around nacre aragonite tablets, and this coating facilitates the synthesis and organization of mineral nanoparticles into mesocrystals. In this report, we identify that a protein component of this coating, n16.3, is a hydrogelator. Due to the presence of intrinsic disorder, aggregation-prone regions, and nearly equal balance of anionic and cationic side chains, this protein assembles to form porous mesoscale hydrogel particles in solution and on mica surfaces. These hydrogel particles change their dimensionality, organization, and internal structure in response to pH and ions, particularly Ca(II), which indicates that these behave as ion-responsive or "smart" hydrogels. Thus, in addition to silk fibroins, the gel phase of the mollusk shell nacre framework layer may actually consist of several framework hydrogelator proteins, such as n16.3, which can promote mineral nanoparticle organization and assembly during the nacre biomineralization process and also serve as a model system for designing ion-responsive, composite, and smart hydrogels.
Collapse
|
8
|
Grumbein S, Minev D, Tallawi M, Boettcher K, Prade F, Pfeiffer F, Grosse CU, Lieleg O. Hydrophobic Properties of Biofilm-Enriched Hybrid Mortar. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:8138-8143. [PMID: 27391813 DOI: 10.1002/adma.201602123] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 06/14/2016] [Indexed: 06/06/2023]
Abstract
A mortar hybrid material is presented in which biomineralization processes are stimulated by adding a biological component, i.e., bacterial biofilm, to standard mortar. A material is obtained that exhibits increased roughness on the microscale and the nanoscale. Accordingly, the hybrid mortar not only resists wetting but also suppresses the uptake of water by capillary forces.
Collapse
Affiliation(s)
- Stefan Grumbein
- Department of Mechanical Engineering and Institute of Medical Engineering IMETUM, Technische Universität München, 85748, Garching, Germany
| | - Dionis Minev
- Department of Mechanical Engineering and Institute of Medical Engineering IMETUM, Technische Universität München, 85748, Garching, Germany
| | - Marwa Tallawi
- Department of Mechanical Engineering and Institute of Medical Engineering IMETUM, Technische Universität München, 85748, Garching, Germany
| | - Kathrin Boettcher
- Department of Mechanical Engineering and Institute of Medical Engineering IMETUM, Technische Universität München, 85748, Garching, Germany
| | - Friedrich Prade
- Physics Department and Institute of Medical Engineering IMETUM, Technische Universität München, 85748, Garching, Germany
| | - Franz Pfeiffer
- Physics Department and Institute of Medical Engineering IMETUM, Technische Universität München, 85748, Garching, Germany
| | - Christian Ulrich Grosse
- Chair of Non-destructive Testing, Center for Building Materials, Technische Universität München, 81245, Munich, Germany
| | - Oliver Lieleg
- Department of Mechanical Engineering and Institute of Medical Engineering IMETUM, Technische Universität München, 85748, Garching, Germany.
| |
Collapse
|
9
|
Du YP, Chang HH, Yang SY, Huang SJ, Tsai YJ, Huang JJT, Chan JCC. Study of Binding Interaction between Pif80 Protein Fragment and Aragonite. Sci Rep 2016; 6:30883. [PMID: 27484975 PMCID: PMC4971512 DOI: 10.1038/srep30883] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 07/11/2016] [Indexed: 11/08/2022] Open
Abstract
Pif is a crucial protein for the formation of the nacreous layer in Pinctada fucata. Three non-acidic peptide fragments of the aragonite-binding domain (Pif80) are selected, which contain multiple copies of the repeat sequence DDRK, to study the interaction between non-acidic peptides and aragonite. The polypeptides DDRKDDRKGGK (Pif80-11) and DDRKDDRKGGKDDRKDDRKGGK (Pif80-22) have similar binding affinity to aragonite. Solid-state NMR data indicate that the backbones of Pif80-11 and Pif80-22 peptides bound on aragonite adopt a random-coil conformation. Pif80-11 is a lot more effective than Pif80-22 in promoting the nucleation of aragonite on the substrate of β-chitin. Our results suggest that the structural arrangement at a protein-mineral interface depends on the surface structure of the mineral substrate and the protein sequence. The side chains of the basic residues, which function as anchors to the aragonite surface, have uniform structures. The role of basic residues as anchors in protein-mineral interaction may play an important role in biomineralization.
Collapse
Affiliation(s)
- Yuan-Peng Du
- Department of Chemistry, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 106, Taiwan
| | - Hsun-Hui Chang
- Department of Chemistry, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 106, Taiwan
| | - Sheng-Yu Yang
- Department of Chemistry, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 106, Taiwan
| | - Shing-Jong Huang
- Instrumentation Center, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 106, Taiwan
| | - Yu-Ju Tsai
- Institute of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Nankang, Taipei 115, Taiwan
| | - Joseph Jen-Tse Huang
- Institute of Chemistry, Academia Sinica, No. 128, Sec. 2, Academia Road, Nankang, Taipei 115, Taiwan
| | - Jerry Chun Chung Chan
- Department of Chemistry, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 106, Taiwan
| |
Collapse
|
10
|
Production of lysozyme nanofibers using deep eutectic solvent aqueous solutions. Colloids Surf B Biointerfaces 2016; 147:36-44. [PMID: 27478961 DOI: 10.1016/j.colsurfb.2016.07.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 05/23/2016] [Accepted: 07/03/2016] [Indexed: 12/30/2022]
Abstract
Amyloid fibrils have recently gained a lot of attention due to their morphology, functionality and mechanical strength, allowing for their application in nanofiber-based materials, biosensors, bioactive membranes and tissue engineering scaffolds. The in vitro production of amyloid fibrils is still a slow process, thus hampering the massive production of nanofibers and its consequent use. This work presents a new and faster (2-3h) fibrillation method for hen egg white lysozyme (HEWL) using a deep eutectic solvent based on cholinium chloride and acetic acid. Nanofibers with dimensions of 0.5-1μm in length and 0.02-0.1μm in thickness were obtained. Experimental variables such as temperature and pH were also studied, unveiling their influence in fibrillation time and nanofibers morphology. These results open a new scope for protein fibrillation into nanofibers with applications ranging from medicine to soft matter and nanotechnology.
Collapse
|
11
|
Su J, Zhu F, Zhang G, Wang H, Xie L, Zhang R. Transformation of amorphous calcium carbonate nanoparticles into aragonite controlled by ACCBP. CrystEngComm 2016. [DOI: 10.1039/c5ce02288f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymorph switching of calcium carbonate controlled by amorphous calcium carbonate-binding protein, an extrapallial fluid (EPF) protein from the pearl oyster, is investigated. The polymorph selection in nacre or pearl growth may be controlled not only by the nucleating template on the matrix but also by the physicochemical effects of EPF proteins.
Collapse
Affiliation(s)
- Jingtan Su
- Institute of Marine Biotechnology, School of Life Sciences
- Tsinghua University
- Beijing 100084, China
| | - Fangjie Zhu
- Institute of Marine Biotechnology, School of Life Sciences
- Tsinghua University
- Beijing 100084, China
| | - Guiyou Zhang
- Institute of Marine Biotechnology, School of Life Sciences
- Tsinghua University
- Beijing 100084, China
| | - Hongzhong Wang
- Institute of Marine Biotechnology, School of Life Sciences
- Tsinghua University
- Beijing 100084, China
| | - Liping Xie
- Institute of Marine Biotechnology, School of Life Sciences
- Tsinghua University
- Beijing 100084, China
| | - Rongqing Zhang
- Institute of Marine Biotechnology, School of Life Sciences
- Tsinghua University
- Beijing 100084, China
- Protein Science Laboratory of the Ministry of Education
- Tsinghua University
| |
Collapse
|
12
|
Natural Composite Systems for Bioinspired Materials. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 940:143-166. [PMID: 27677512 DOI: 10.1007/978-3-319-39196-0_7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
From a relatively limited selection of base materials, nature has steered the development of truly remarkable materials. The simplest and often overlooked organisms have demonstrated the ability to manufacture multi-faceted, molecular-level hierarchical structures that combine mechanical properties rarely seen in synthetic materials. Indeed, these natural composite systems, composed of an array of intricately arranged and functionally relevant organic and inorganic substances serve as inspiration for materials design. A better understanding of these composite systems, specifically at the interface of the hetero-assemblies, would encourage faster development of environmentally friendly "green" materials with molecular level specificities.
Collapse
|
13
|
Rutter GO, Brown AH, Quigley D, Walsh TR, Allen MP. Testing the transferability of a coarse-grained model to intrinsically disordered proteins. Phys Chem Chem Phys 2015; 17:31741-9. [DOI: 10.1039/c5cp05652g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The coarse-grained PLUM model is shown to capture structural and dimerization behaviour of the intrinsically disordered biomineralisation peptide n16N.
Collapse
Affiliation(s)
- Gil O. Rutter
- Department of Physics
- University of Warwick
- Coventry CV4 7AL
- UK
| | - Aaron H. Brown
- Department of Chemistry and Centre for Scientific Computing
- University of Warwick
- Coventry
- UK
- Institute for Frontier Materials
| | - David Quigley
- Department of Physics and Centre for Scientific Computing
- University of Warwick
- Coventry CV4 7AL
- UK
| | - Tiffany R. Walsh
- Institute for Frontier Materials
- Deakin University
- Geelong
- Australia
| | - Michael P. Allen
- Department of Physics
- University of Warwick
- Coventry CV4 7AL
- UK
- H. H. Wills Physics Laboratory
| |
Collapse
|
14
|
Brown AH, Rodger PM, Evans JS, Walsh TR. Equilibrium Conformational Ensemble of the Intrinsically Disordered Peptide n16N: Linking Subdomain Structures and Function in Nacre. Biomacromolecules 2014; 15:4467-79. [DOI: 10.1021/bm501263s] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Aaron H. Brown
- Institute
for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia
| | | | - John Spencer Evans
- Department
of Craniofacial Biology and Center for Skeletal Sciences, New York University, New York, New York 10010, United States
| | - Tiffany R. Walsh
- Institute
for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia
| |
Collapse
|
15
|
Splice variants of perlucin from Haliotis laevigata modulate the crystallisation of CaCO3. PLoS One 2014; 9:e97126. [PMID: 24824517 PMCID: PMC4019660 DOI: 10.1371/journal.pone.0097126] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 04/15/2014] [Indexed: 12/13/2022] Open
Abstract
Perlucin is one of the proteins of the organic matrix of nacre (mother of pearl) playing an important role in biomineralisation. This nacreous layer can be predominately found in the mollusc lineages and is most intensively studied as a compound of the shell of the marine Australian abalone Haliotis laevigata. A more detailed analysis of Perlucin will elucidate some of the still unknown processes in the complex interplay of the organic/inorganic compounds involved in the formation of nacre as a very interesting composite material not only from a life science-based point of view. Within this study we discovered three unknown Perlucin splice variants of the Australian abalone H. laevigata. The amplified cDNAs vary from 562 to 815 base pairs and the resulting translation products differ predominantly in the absence or presence of a varying number of a 10 mer peptide C-terminal repeat. The splice variants could further be confirmed by matrix-assisted laser desorption ionisation time of flight mass spectrometry (MALDI-ToF MS) analysis as endogenous Perlucin, purified from decalcified abalone shell. Interestingly, we observed that the different variants expressed as maltose-binding protein (MBP) fusion proteins in E. coli showed strong differences in their influence on precipitating CaCO3 and that these differences might be due to a splice variant-specific formation of large protein aggregates influenced by the number of the 10 mer peptide repeats. Our results are evidence for a more complex situation with respect to Perlucin functional regulation by demonstrating that Perlucin splice variants modulate the crystallisation of calcium carbonate. The identification of differentially behaving Perlucin variants may open a completely new perspective for the field of nacre biomineralisation.
Collapse
|
16
|
Mann K, Jackson DJ. Characterization of the pigmented shell-forming proteome of the common grove snail Cepaea nemoralis. BMC Genomics 2014; 15:249. [PMID: 24684722 PMCID: PMC4023409 DOI: 10.1186/1471-2164-15-249] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 03/25/2014] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND With a diversity of pigmented shell morphotypes governed by Mendelian patterns of inheritance, the common grove snail, Cepaea nemoralis, has served as a model for evolutionary biologists and population geneticists for decades. Surprisingly, the molecular mechanisms by which C. nemoralis generates this pigmented shelled diversity, and the degree of evolutionary conservation present between molluscan shell-forming proteomes, remain unknown. RESULTS Here, using next generation sequencing and high throughput proteomics, we identify and characterize the major proteinaceous components of the C. nemoralis shell, the first shell-proteome for a pulmonate mollusc. The recent availability of several marine molluscan shell-proteomes, and the dataset we report here, allow us to identify 59 evolutionarily conserved and novel shell-forming proteins. While the C. nemoralis dataset is dominated by proteins that share little to no similarity with proteins in public databases, almost half of it shares similarity with proteins present in other molluscan shells. In addition, we could not find any indication that a protein (or class of proteins) is directly associated with shell pigmentation in C. nemoralis. This is in contrast to the only other partially characterized molluscan-shell pigmentation mechanism employed by the tropical abalone Haliotis asinina. CONCLUSIONS The unique pulmonate shell-forming proteome that we report here reveals an abundance of both mollusc-specific and pulmonate-specific proteins, suggesting that novel coding sequences, and/or the extensive divergence of these sequences from ancestral sequences, supported the innovation of new shell types within the Conchifera. In addition, we report here the first evidence that molluscs use independently evolved mechanisms to pigment their shells. This proteome provides a solid foundation from which further studies aimed at the functional characterization of these shell-forming proteins can be conducted.
Collapse
Affiliation(s)
- Karlheinz Mann
- Max Planck Institute for Biochemistry, Department of Proteomics and Signal Transduction, Am Klopferspitz 18, D-82152 Martinsried, Munich, Germany
| | - Daniel John Jackson
- Courant Research Centre Geobiology, Georg-August University of Göttingen, Goldschmidtstrasse 3, 37077 Göttingen, Germany
| |
Collapse
|
17
|
Perovic I, Mandal T, Evans JS. A Pearl Protein Self-Assembles To Form Protein Complexes That Amplify Mineralization. Biochemistry 2013; 52:5696-703. [DOI: 10.1021/bi400808j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Iva Perovic
- Laboratory for Chemical Physics,
Division of Basic Sciences and Craniofacial Biology, New York University, 345 E. 24th Street, NY, New York
10010, United States
| | - Trinanjana Mandal
- Department
of Chemistry and
the Molecular Design Institute, New York University, 100 Washington Square East, New York, New York 10003-6688, United
States
| | - John Spencer Evans
- Laboratory for Chemical Physics,
Division of Basic Sciences and Craniofacial Biology, New York University, 345 E. 24th Street, NY, New York
10010, United States
| |
Collapse
|
18
|
Roles of larval sea urchin spicule SM50 domains in organic matrix self-assembly and calcium carbonate mineralization. J Struct Biol 2013; 183:205-15. [PMID: 23796503 DOI: 10.1016/j.jsb.2013.06.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 05/29/2013] [Accepted: 06/09/2013] [Indexed: 12/31/2022]
Abstract
The larval spicule matrix protein SM50 is the most abundant occluded matrix protein present in the mineralized larval sea urchin spicule. Recent evidence implicates SM50 in the stabilization of amorphous calcium carbonate (ACC). Here, we investigate the molecular interactions of SM50 and CaCO3 by investigating the function of three major domains of SM50 as small ubiquitin-like modifier (SUMO) fusion proteins - a C-type lectin domain (CTL), a glycine rich region (GRR) and a proline rich region (PRR). Under various mineralization conditions, we find that SUMO-CTL is monomeric and influences CaCO3 mineralization, SUMO-GRR aggregates into large protein superstructures and SUMO-PRR modifies the early CaCO3 mineralization stages as well as growth. The combination of these mineralization and self-assembly properties of the major domains synergistically enable the full-length SM50 to fulfill functions of constructing the organic spicule matrix as well as performing necessary mineralization activities such as Ca(2+) ion recruitment and organization to allow for proper growth and development of the mineralized larval sea urchin spicule.
Collapse
|
19
|
Abstract
In nature, mollusk shells have a role in protecting the soft body of the mollusk from predators and from the external environment, and the shells consist mainly of calcium carbonate and small amounts of organic matrices. Organic matrices in mollusk shells are thought to play key roles in shell formation. However, enough information has not been accumulated so far. High toughness and stiffness have been focused on as being adaptable to the development of organic–inorganic hybrid materials. Because mollusks can produce elaborate microstructures containing organic matrices under ambient conditions, the investigation of shell formation is expected to lead to the development of new inorganic–organic hybrid materials for various applications. In this review paper, we summarize the structures of mollusk shells and their process of formation, together with the analysis of various organic matrices related to shell calcification.
Collapse
Affiliation(s)
- Michio Suzuki
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Hiromichi Nagasawa
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| |
Collapse
|
20
|
Evans JS. “Liquid-like” biomineralization protein assemblies: a key to the regulation of non-classical nucleation. CrystEngComm 2013. [DOI: 10.1039/c3ce40803e] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
21
|
Wright LB, Walsh TR. First-principles molecular dynamics simulations of NH 4+ and CH3COO− adsorption at the aqueous quartz interface. J Chem Phys 2012; 137:224702. [DOI: 10.1063/1.4769727] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
|
22
|
Ndao M, Ponce CB, Evans JS. Oligomer formation, metalation, and the existence of aggregation-prone and mobile sequences within the intracrystalline protein family, Asprich. Faraday Discuss 2012. [DOI: 10.1039/c2fd20064c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
23
|
Amos FF, Ndao M, Ponce CB, Evans JS. A C-RING-like domain participates in protein self-assembly and mineral nucleation. Biochemistry 2011; 50:8880-7. [PMID: 21928802 DOI: 10.1021/bi201346d] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
AP7 is a nacre-associated protein of the mollusk shell that forms supramolecular assemblies that nucleate single-crystal aragonite in vitro. AP7 possesses two major sequence regions: a random coil 30-amino acid N-terminal domain (AP7N) and a partially disordered 36-amino acid C-terminal domain (AP7C) that exhibits imperfect sequence homology to the C subclass of the intracellular RING domain family. We report here new findings that implicate the C-RING domain in AP7-mediated supramolecular assembly and single-crystal mineral formation. AP7 protein spontaneously self-assembles over a pH range of 4-9 and is monomeric at pH >9.5. AP7N and AP7C both oligomerize over the pH range of 4-9, with the AP7C sequence closely resembling AP7 in terms of particle morphology and size. In vitro mineralization experiments demonstrate that both AP7N and AP7C form supramolecular assemblies that nucleate single-crystal calcium carbonates. Comparison of previously published nuclear magnetic resonance-based structures of AP7C and AP7N reveals the significant presence of complementary anionic-cationic electrostatic molecular surfaces on AP7C that are not found on AP7N, and this may explain the noted discrepancies between the two domains in terms of self-assembly and single-crystal nucleation. We conclude that the C-RING-like sequence is an important site for AP7 self-association and mineral nucleation, and this represents the first known instance of a RING-like sequence performing these functions within an extracellular protein.
Collapse
Affiliation(s)
- Fairland F Amos
- Laboratory for Chemical Physics, New York University, 345 East 24th Street, New York, New York 10010, USA
| | | | | | | |
Collapse
|