Nicole "Choano" King

285 Followers
45 Following
41 Posts
UC Berkeley professor, HHMI investigator; lover of choanoflagellates, capybaras, and canines
@christoph_STCmicrobeblog @kayleyhake Fantastic! I didn't know that Kayley was on Mastodon yet.
@christoph_STCmicrobeblog Very proud! And I forgot to acknowledge the scientist behind the images - Kayley Hake. You can learn more about this fascinating choanoflagellate in her pre-print: https://www.biorxiv.org/content/10.1101/2021.03.30.437421v5

Do you study choanoflagellates or other holozoan relatives of animals? Or are you interested in learning more about these fascinating organisms? Consider registering for the 2023 International Choanoflagellates and Friends Workshop: https://forms.gle/HfjmBkP1Vwovs39q9

#choanoflagellates #choanos #holozoans #multicellularity

2023 International Choanoflagellates & Friends Workshop

Thank you for your interest in attending the 2023 IC&F Workshop and for your patience in awaiting the final details. To secure your spot, please register by responding to this survey no later than March 15, 2023. After we receive your registration, you will later receive a link to submit an abstract, to pay for registration, and to make lodging reservations by April 15. Here is a snapshot of the most important information: Dates: Arrive on Wednesday, May 17, 2023 – Depart on Saturday, May 20, 2023 Location: UC Berkeley Faculty Club and UC San Francisco Teaching Lab Registration Fee: $125 Please note two important items for attending the workshop. First, you will need to directly make reservations for lodging. We are helping to facilitate that process by reserving blocks of rooms at discounted rates. For those discounts, we need an accurate head count of attendees, so please fill out the lodging survey in this registration. Second, please remember it is the proud tradition of this workshop that every attendee present their research either as a poster or as a talk.

Google Docs
@STCmicrobeblog Very exciting! Certainly seems consistent with it being a colonial choanoflagellate, although more convincing if the cells also had collars. I look forward to seeing where this analysis goes next.

x·posting from twitter

Fonseca et al. (2023)
First putative occurrence in the fossil record of choanoflagellates, the sister group of Metazoa
https://www.nature.com/articles/s41598-022-26972-8

📌 @NicoleKing and other choano aficionadas y aficionados take note!
https://twitter.com/Pawel_Burkhardt/status/1617798604487544832?t=2egSM2wyAMZV1XTAdcUtQg&s=19

First putative occurrence in the fossil record of choanoflagellates, the sister group of Metazoa - Scientific Reports

Choanoflagellates are microeukaryotes that inhabit freshwater and marine environments and have long been regarded as the closest living relatives of Metazoa. Knowledge on the evolution of choanoflagellates is key for the understanding of the ancestry of animals, and although molecular clock evidence suggests the appearance of choanoflagellates by late Neoproterozoic, no specimens of choanoflagellates are known to occur in the fossil record. Here the first putative occurrence of choanoflagellates in sediments from the Cretaceous (Cenomanian–Turonian) is described by means of several cutting-edge petrographic techniques, and a discussion of its paleoenvironmental significance is performed. Furthermore, their placement in the organic matter classification systems is argued, with a placement in the Zoomorph Subgroup (Palynomorph Group) of the dispersed organic matter classification system being proposed. Regarding the ICCP System 1994, incorporation of choanoflagellates is, at a first glance, straightforward within the liptinite group, but the definition of a new maceral may be necessary to accommodate the genetic origin of these organisms. While modern choanoflagellates may bring light to the cellular foundations of animal origins, this discovery may provide an older term of comparison to their extant specimens and provide guidelines for possible identification of these organic components in other locations and ages throughout the geological record.

Nature

We're hiring! Are you interested in working on a fascinating biological question in a rigorous, stimulating, and supportive scientific environment? Please apply and/or share this posting with your favorite scientists.

https://hhmi.wd1.myworkdayjobs.com/en-US/External/details/Research-Technician-II--King-Lab_R-1741?q=R-1741

Research Technician II- King Lab

Primary Work Address: 2033 Valley Life Sciences Building, Berkeley, CA, 94720-3140 Current HHMI Employees, click here to apply via your Workday account. Are you interested in working on a fascinating biological question in a rigorous, stimulating, and supportive scientific environment? The lab of Professor Nicole King at the University of California, Berkeley, is opening a position of Research Technician II to provide technical support to ongoing research projects. Our lab studies choanoflagellates, the closest living relatives of animals, to understand animal origins and the molecular mechanisms underpinning host-microbe interactions (see: https://kinglab.berkeley.edu/). The ideal candidate should be passionate about biological research, eager to learn, and ready to be an integral and reliable part of our research team. As a valued member of our team, you will learn the intellectual background of the lab’s research by reading papers, asking questions and participate in weekly laboratory meetings and regular check-ins with lab supervisors. We require excellent communication, note-taking, and organizational skills. The candidate will learn exciting techniques like CRISPR/Cas9 gene editing and fluorescence microscopy. This is an excellent opportunity to learn about animal origins, genetics, evolution, cell biology, and protistology and to develop essential research capabilities, including designing experiments, analyzing data, troubleshooting experiments, and developing new tools. As a prerequisite to joining the lab, the candidate should already have significant experience in routine molecular biology techniques (PCR, cloning, plasmid purification, etc.), sterile technique, and cell culture (e.g., bacterial, plant, or animal cell lines). What we provide: A competitive compensation package, with comprehensive health and welfare benefits. A close-knit lab community where mentorship and growth are prioritized. Opportunities for professional development including the potential to contribute to research publications and become involved with a variety of different projects based on your interests and drive. Hands-on training to learn a variety of techniques. What you’ll do: Grow choanoflagellate cells and bacteria using sterile technique and various culture conditions. Culture media preparation. Apply routine molecular biology methods (PCR, molecular cloning, DNA and RNA preparation) as well as innovative techniques (CRISPR/Cas9 mediated genome editing, fluorescence microscopy) to study choanoflagellate biology. Use flow cytometry to isolate single-cell clones for genotyping. Image choanoflagellate cultures using different microscopy approaches (widefield, confocal, and electron microscopy). Keep meticulous laboratory records and communicate efficiently and transparently about the experiments. Contribute to laboratory upkeep and generally support research efforts of laboratory members. What you bring: Bachelor’s degree in biology, bioengineering, or a related field; Master’s degree a plus. Two years of related research experience working in a laboratory setting. Knowledge of fundamental principles of genetics and molecular biology gained through coursework and prior laboratory experience. Experience with molecular biology techniques, flow cytometry, microscopy, tissue culture, and/or sterile techniques. Demonstrated ability to troubleshoot and perform a variety of new techniques. Excellent organizational and record-keeping skills. Detail-oriented and able to perform complex tasks effectively and independently with general instruction. Ability to follow instructions with an eagerness to learn, grow professionally, and be mentored. Application Instructions: Please attach the following information in a single PDF document as part of your application. Résumé emphasizing prior research experience Contact information for three professional references Transcript of undergraduate or graduate school courses (unofficial is acceptable) Physical Requirements Remaining in a normal seated or standing position for extended periods of time; reaching and grasping by extending hand(s) or arm(s); dexterity to manipulate objects with fingers, for example using a keyboard; communication skills using the spoken word; ability to see and hear within normal parameters; ability to move about workspace. The position requires mobility, including the ability to move materials weighing up to several pounds (such as a laptop computer or tablet). Work may involve possible exposure to malodorous vapors, low dose radiation, contamination by toxic chemicals and acids and presence of carcinogenic substances or other hazardous materials. Persons with disabilities may be able to perform the essential duties of this position with reasonable accommodation. Requests for reasonable accommodation will be evaluated on an individual basis. Please Note: This job description sets forth the job’s principal duties, responsibilities, and requirements; it should not be construed as an exhaustive statement, however. Unless they begin with the word “may,” the Essential Duties and Responsibilities described above are “essential functions” of the job, as defined by the Americans with Disabilities Act. Compensation and Benefits Our employees are compensated from a total rewards perspective in many ways for their contributions to our mission, including competitive pay, exceptional health benefits, retirement plans, time off, and a range of recognition and wellness programs. Visit our Benefits at HHMI site to learn more. Compensation Range $21.56 (minimum) - $26.97 (midpoint) - $35.05 (maximum) Pay Type: Hourly HHMI’s salary structure is developed based on relevant job market data. HHMI considers a candidate's education, previous experiences, knowledge, skills and abilities, as well as internal equity when making job offers. Typically, a new hire for this position in this location is compensated between the minimum and the midpoint of the salary range. HHMI is an Equal Opportunity Employer Howard Hughes Medical Institute (HHMI) is an independent, ever-evolving philanthropy that supports basic biomedical scientists and educators with the potential for transformative impact. We make long-term investments in people, not just projects, because we believe in the power of individuals to make breakthroughs over time. Why HHMI To move science forward we need a diverse collection of talents, expertise, and backgrounds in scientific research and science education, as well as communications, finance, human resources, information technology, investments, law, and operations. At HHMI, we encourage collaborative and results-driven working styles and offer an adaptable environment where employees can do their best work. What makes us strong is the diversity of our perspectives. We work to promote a culture of inclusion in our work environments and across the greater scientific community. To find more information about us and the steps we're taking to make HHMI a more inclusive organization, visit our About Us page. A Note for Job Seekers Your best option for consideration in our career opportunities is to apply directly via our HHMI Careers site. There, you will learn more about HHMI and can find information about our available roles. Contact us at [email protected] if you require an accommodation related to completing the job application. All information you provide will be kept confidential and will be used only to the extent required to provide needed reasonable accommodations.

Hi All: I decided to give Mastodon a try after years of engagement on twitter (and a couple months of disengagement after twitter's degradation).
@RELenski Welcome! I’m loving it over here. Much better signal:noise ratio than the bird app. (Perhaps because I haven’t tooted much yet?)

Amazing footage of a Cirroteuthid octopus stretching its tentacles to form a huge balloon, filmed by EVNautilus at a depth of around 1,600 metres.

Source and more details: https://www.youtube.com/watch?v=lbHjs9A7sis

Cirroteuthid Octopus Billows Like a Circus Tent | Nautilus Live

YouTube

Important study examining a widespread but often overlooked impact of viruses on food web dynamics!

"The consumption of viruses returns energy to food chains"

From the abstract: "Here, we show that small protists not only can consume viruses they also can grow and divide given only viruses to eat."

https://www.pnas.org/doi/10.1073/pnas.2215000120

#protists #viruses #microbiology #virology