Premeltons in DNA
Sobell, Henry M.
Sold by GreatBookPricesUK, Woodford Green, United Kingdom
AbeBooks Seller since 28 January 2020
New - Hardcover
Condition: New
Ships from United Kingdom to U.S.A.
Quantity: Over 20 available
Add to basketSold by GreatBookPricesUK, Woodford Green, United Kingdom
AbeBooks Seller since 28 January 2020
Condition: New
Quantity: Over 20 available
Add to basketThe author is internationally renowned for his pioneering contributions to the understanding of how the anticancer agent, actinomycin D, binds to DNA and exerts its mechanism of action. Using the technique of X-ray crystallography, he and his research colleague, Shri C. Jain, solved the structure of a crystalline complex containing actinomycin and deoxyguanosine in the early 1970's, and this information led them to propose a model that is now widely accepted to understand the general
features of how actinomycin binds to DNA.
According to this model, the phenoxazone ring system on actinomycin intercalates between adjacent base pairs, while pentapeptide chains lie in the narrow groove of the B- helix, forming hydrogen bonds (in the case of d (pGpC) sequences) with guanine residues on opposite chains. Although X-ray crystallographic studies of actinomycin complexed to a number of different self-complementary oligonucleotides have now confirmed the overall features of this model, the precise nature of the DNA conformation remains unknown due to problems inherent in refining large structures with limited resolution data. Implicit in the original model was the assumption that actinomycin binds to B-DNA or to a distorted form of B-DNA. The possibility that actinomycin might bind to some other discretely different DNA conformational state was not envisioned at that time.
Together with his research team, Dr. Sobell continued to extend his crystallographic studies to include other intercalators (these contain a diverse variety of heterocyclic ring systems) complexed to a number of different self-complementary DNA and RNA dinucleotides. The information obtained from these studies led him to propose the existence of beta-DNA, a metastable and hyperflexible DNA form, a form very different from the Watson-Crick B- and A- structures, which he believes, is intimately associated with the intercalation process. The existence of this beta-DNA structure required modification to the original actinomycin-DNA binding model. When combined with the realization that beta-DNA is an obligatory structural intermediate (i.e., transition-state intermediate) in the unwinding of duplex DNA leading to melting, this novel beta-DNA binding model leads to understanding the mechanism of action of actinomycin.
This book calls attention to the wider repercussions this modified actinomycin-DNA binding model has had in understanding much of DNA physical chemistry and molecular biology. These stem from additional insights provided by another more recent area of inquiry known as Nonlinear Science.
"About this title" may belong to another edition of this title.
Company Name: GreatBookPricesUK
Legal Entity: Far Corner Europe Limited
Address: 19-20 Bourne Court, Southend Road, Woodford Green Essex, UK IG8 8HD
Registration #: 10691061
Authorized representative: Danielle Hainsey
If you are a consumer you can cancel the contract in accordance with the following. Consumer means any natural person who is acting for purposes which are outside his trade, business, craft or profession.
INFORMATION REGARDING THE RIGHT OF CANCELLATION
Statutory Right to cancel
You have the right to cancel this contract within 14 days without giving any reason.
The cancellation period will expire after 14 days from the day on which you acquire, or a third party other than the carrier and indicated by you acquires, physical possession of the the last good or the last lot or piece.
To exercise the right to cancel, you must inform us, GreatBookPricesUK, Willow Farm Business Park, DE74 2TW, Castle Donington, Derby, United Kingdom, +1 410-964-0026, of your decision to cancel this contract by a clear statement (e.g. a letter sent by post, fax or e-mail). You may use the attached model cancellation form, but it is not obligatory. You can also electronically fill in and submit a clear statement on our website, under "My Purchases" in "My Account". If you use this option, we will communicate to you an acknowledgement of receipt of such a cancellation on a durable medium (e.g. by e-mail) without delay.
To meet the cancellation deadline, it is sufficient for you to send your communication concerning your exercise of the right to cancel before the cancellation period has expired.
Effects of cancellation
If you cancel this contract, we will reimburse to you all payments received from you, including the costs of delivery (except for the supplementary costs arising if you chose a type of delivery other than the least expensive type of standard delivery offered by us).
We may make a deduction from the reimbursement for loss in value of any goods supplied, if the loss is the result of unnecessary handling by you.
We will make the reimbursement without undue delay, and not later than 14 days after the day on which we are informed about your decision to cancel with contract.
We will make the reimbursement using the same means of payment as you used for the initial transaction, unless you have expressly agreed otherwise; in any event, you will not incur any fees as a result of such reimbursement.
We may withhold reimbursement until we have received the goods back or you have supplied evidence of having sent back the goods, whichever is the earliest.
You shall send back the goods or hand them over to us or GreatBookPricesUK, Willow Farm Business Park, Returns Ref: [transaction or order number], DE74 2TW, Castle Donington, Derby, United Kingdom, +1 410-964-0026, without undue delay and in any event not later than 14 days from the day on which you communicate your cancellation from this contract to us. The deadline is met if you send back the goods before the period of 14 days has expired. You will have to bear the direct cost of returning the goods. You are only liable for any diminished value of the goods resulting from the handling other than what is necessary to establish the nature, characteristics and functioning of the goods.
Exceptions to the right of cancellation
The right of cancellation does not apply to:
Model withdrawal form
(complete and return this form only if you wish to withdraw from the contract)
To: (GreatBookPricesUK, Willow Farm Business Park, DE74 2TW, Castle Donington, Derby, United Kingdom, +1 410-964-0026)
I/We (*) hereby give notice that I/We (*) withdraw from my/our (*) contract of sale of the following goods (*)/for the provision of the following goods (*)/for the provision of the following service (*),
Ordered on (*)/received on (*)
Name of consumer(s)
Address of consumer(s)
Signature of consumer(s) (only if this form is notified on paper)
Date
* Delete as appropriate.
Our warehouses across the globe are fully operational without substantial delays. We are working hard and continue to overcome the daily challenges presented by COVID-19. There have been reports that delivery carriers are experiencing large delays resulting in longer than normal deliveries to customers. We would like to apologize in advance if your item arrives later than the expected delivery due date.
Internal processing of your order will take about 1-2 business days. Please allow an additional 4-14 business days for Royal Mail delivery.
| Order quantity | 10 to 30 business days | 10 to 27 business days |
|---|---|---|
| First item | £ 15.00 | £ 15.00 |
Delivery times are set by sellers and vary by carrier and location. Orders passing through Customs may face delays and buyers are responsible for any associated duties or fees. Sellers may contact you regarding additional charges to cover any increased costs to ship your items.