Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Biology Expert

Under some environmental conditions the halophile Halobacterium halobium synthesizes a membrane protein (MW 26,000) bacteriorhodopsin, which is purple because it contains retinal. Molecules of this protein aggregate into purple patches in the cell membrane. Bacteriorhodopsin acts as a light activated proton pump that provides energy for cell functions. X-ray analysis of this protein
reveals that it consists of seven parallel alpha-helical segments, each of which transverses the bacterial cell membrane (thickness 4.5 nm=45Å).
a. find out the minimum number of amino acids necessary for one segment of alpha-helix to traverse the membrane completely
b. Estimate the fraction of the bacteriorhodopsin protein that occurs in alpha-helical form.

Biology, Academics

  • Category:- Biology
  • Reference No.:- M925338

Have any Question? 


Related Questions in Biology

What principles a health care practitioner should follow

What principles a health care practitioner should follow during the participation in media?

Question 1 summarize the role that the atmosphere

Question 1: Summarize the role that the atmosphere conditions of wind speed, temperature, and stability potentially impact plume modeling activities with a Gaussian model. Question 2: First, discuss the six featured disp ...

State an industrial concernimportance for knowing the

State an industrial concern/importance for knowing the genetic makeup of an organism. Explain why it is important in your example.

How when where and why might you apply your learning of

How, when, where and why might you apply your learning of bioethics in the future if you wanted to be a veterinarian?

Topic 1 discussion topiclist four areas of negligence for

Topic 1: Discussion topic List four areas of negligence for allied health professionals. Discuss the standard of care in each area, and how that standard can be applied to the healthcare facility.

Discussion topicheart diseasenbspis the leading cause of

Discussion Topic Heart disease  is the leading cause of death in the United States. Almost 700,000 people die of heart disease in the U.S. each year. Heart disease is a term that includes several more specific heart cond ...

Help with grade 12 biology questions Help with grade 12 biology questions please 

Help with grade 12 biology questions please  Understanding photosynthetic processes can increase food yield. In Ontario, a number of fresh vegetables are grown all year in greenhouses. This allows the grower to control t ...

State which cells in a human testis produce testosterone

State which cells in a human testis produce testosterone and its function(s) and state which hormones are produced by a human ovary, and their functions.

Lets discuss the role of the intestinal microbiota in the

Let's discuss the role of the intestinal microbiota in the maintenance of health and the many opportunistic pathogens that cause disease when the delicate balance of normal microbiota in this region of the body is distur ...

Explain why nbspin psoriasis is an nbspthe cells in the

Explain why  in Psoriasis is an  the cells in the dermis and epidermis thickened. Decreased cell maturation occurs in psoriasis  as a result of? Reference/s  must be provided to make  sure the  information  you are tutor ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro