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Lily Jan

Lily Jan is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Lily Jan rather than just read about it. In short: Lily Yeh Jan (Chinese: 葉公杼; pinyin: Yè Gōngzhù; Wade–Giles: Yeh Kung-chu; born January 20, 1947) is a Taiwanese-American neuroscientist. She is the Jack and DeLoris Lange Professor of Physiology and Biophysics at the University of California, San Francisco, where she collaborates with her husband Yuh Nung Jan as co-principal investigators of the Jan Lab.

Key takeaways

  • Lily Jan belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Lily Jan to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Lily Jan from memory before moving on to harder problems.

Reference excerpt

Lily Yeh Jan (Chinese: 葉公杼; pinyin: Yè Gōngzhù; Wade–Giles: Yeh Kung-chu; born January 20, 1947) is a Taiwanese-American neuroscientist. She is the Jack and DeLoris Lange Professor of Physiology and Biophysics at the University of California, San Francisco, where she collaborates with her husband Yuh Nung Jan as co-principal investigators of the Jan Lab.

Early life, education, and career Lily Yeh was born Yeh Kung-chu (Ye Gongzhu) in Fuzhou, China, to two accountants, Yeh Hong-shu and Lee Chuan-hwa. In 1949, her family moved to Taiwan. She attended a prestigious public school, the Taipei First Girls' High School. As a high-school student she was particularly drawn to the field of physics and was inspired by the 1957 Nobel Prize in physics awarded to Tsung Dao Lee and Chen Ning Yang as well as the experimental physicist Chien Shiung Wu. Jan attended National Taiwan University where she earned her B.S. in physics in 1968. She then began her graduate studies with the intention of studying theoretical physics at Caltech. Two years later, in 1970, she was inspired by her thesis advisor, Max Delbrück (winner of the 1969 Nobel Prize), and Jerome Vinograd to change her field of study to biology. Switching fields involved Jan sitting for a seven-day, open-book, open-library exam in the field of biology after having passed the qualifying exams for physics graduate students and also a placement test in organism biology. Lily Jan's proposal and her subsequent thesis work was focused on structural studies of rhodopsin localization in mammalian photoreceptors and also in plasma membranes. Her co-mentors for her graduate studies were Jean Paul Revel and Max Delbrück. Upon joining the Delbrück group, Jan was a member of the membrane biology subgroup where she performed challenging experiments in black lipid bilayers in the sub-terranean sub-basement of the electrical engineering building. The Jans have shared that from this point forward Delbrück ensured separation of her graduate work from those of her spouse Yuh Nung Jan given his graduate studies with Delbrück were focused on the sensory responses of the fungus Phycomyces to light, among other stimuli. Lily Jan would go on to hold postdoctoral positions in the laboratory of Seymour Benzer at Caltech and subsequently in the laboratory of Stephen Kuffler at Harvard Medical School. Jan and her husband joined the faculty at University of California, San Francisco in 1979 where they are leaders of a joint research group. She has been a HHMI investigator since 1984.

Research After graduating from Caltech with her Ph.D. in 1974, Lily Jan and her husband Yuh Nung Jan took summer courses at Cold Spring Harbor Laboratory together. This coursework would mark the beginning of their scientific collaboration which has spanned the majority of their careers. After that at Cold Spring Harbor Laboratory, Jan and her husband would both begin postdoctoral fellowships in the group of Seymour Benzer at Caltech. Their first collaborative effort was building an electrophysiology rig in the laboratory towards the purpose of characterizing the neuromuscular junction in Drosophila fly larvae. This effort would lead to their first two collaborative publications which were in print by 1976, only nine years after the Jans first met. During this time, the Jans would first observe that a male mutant ShakerKS133 larvae exhibited an exceptionally large excitatory response after motor stimulation. Unraveling whether the mutant phenotype was linked to the nerve or muscle of Shaker mutant larvae would demarcate the beginning of the Jans' investigations on ion channels. Jan and her husband joined the faculty as assistant professors at UCSF in 1979 where they set up a joint lab. The two investigators only got $15,000 each in start-up money and 1,000 ft2 to share to set up their lab, however have shared they were drawn to UCSF by the people and the atmosphere. The early years of the Jans' research group at UCSF was distinguished by their efforts on cloning the Shaker channel and studies of neural development. In the 1980s, their work on neural development was performed in collaboration with Alain Ghysen and Christine Dambly-Chaudiere. The Jans were tenured in 1983 and were selected as Howard Hughes Medical Institute Investigators in 1984. They have shared that from 1983 to 1986 their research goals were challenged by difficulties cloning the Shaker gene. In 1987, they were successful with cloning Shaker and enabling their team to perform functional studies on single potassium ion channels. Their neural development research has been particularly distinguished by breakthroughs in neurogenesis and cell fate specification (cut, numb, atonal, and daughterless). Since 1994, the Jan lab has been organized in function and development subgroups led by each co-PI. The function group of the laboratory is led by Lily and largely focuses on the studies of ion channels, their assembly, and their dynamic response to neural activity. The development subgroup led by Yuh Nung has been engaged with questions surrounding dendrite morphogenesis.

Awards

Vilcek Prize in Biomedical Science (2017) Gruber Prize in Neuroscience (2012) Wiley Prize in Biomedical Sciences (2011) Albert and Ellen Grass Lecture, Society for Neuroscience (2010) Edward M. Scolnick Prize in Neuroscience, Massachusetts Institute of Technology (2010) Ralph W. Gerard Prize in Neuroscience, Society for Neuroscience (2009) Elected member, American Academy of Arts and Sciences (2007) Society of Chinese Bioscientists in America Presidential Award (2006) National Institute of Health MERIT Award (2006) Distinguished Alumni Award, California Institute of Technology (2006) K. S. Cole Award, Biophysical Society (2004) Stephen W. Kuffler Lecture, Harvard Medical School (1999) Harvey Lecture, New York (1998) Elected member, Academia Sinica, Taiwan (1998) Elected member, National Academy of Sciences (1995) 38th Faculty Lecturer Award, University of California, San Francisco (1995) W. Alden Spencer Award and Lectureship, Columbia University (1988) Klingstein Fellowship Award (1983-1983) Alfred P. Sloan Research Fellowship (1977-1979)

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Lily Jan

Start with the simplest possible case. Write down what Lily Jan claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Lily Jan before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Lily Jan ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Lily Jan

In research
Lily Jan appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Lily Jan in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Lily Jan is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1947 births, 21st-century American women scientists, American neuroscientists, so understanding it makes those chapters shorter.
In everyday life
Look for Lily Jan outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Lily Jan in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Lily Jan means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Lily Jan out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lily Jan in simple terms?

Lily Yeh Jan (Chinese: 葉公杼; pinyin: Yè Gōngzhù; Wade–Giles: Yeh Kung-chu; born January 20, 1947) is a Taiwanese-American neuroscientist. She is the Jack and DeLoris Lange Professor of Physiology and Biophysics at the University of California, San Francisco, where she collaborates with her husband Y…

Why does Lily Jan matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Lily Jan?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Lily Jan.

Tags

  • 1947 births
  • 21st-century American women scientists
  • American neuroscientists
  • American women biologists
  • American women neuroscientists
  • Biologists from Fujian
  • California Institute of Technology alumni
  • Chinese emigrants to the United States
  • Chinese women biologists
  • Chinese women neuroscientists
  • Educators from Fujian
  • Howard Hughes Medical Investigators

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