Hotel Information

Hilton San Francisco Union Square
The 39th Annual Symposium of The Protein Society will take us back to the beautiful Hilton San Francisco Union Square, the headquarter hotel for our first meeting back after Covid-19 in 2022.
Check in is at 3 p.m., checkout at 11 a.m.
333 O'Farrell St, San Francisco, CA 94102 Phone Number: +1 (415) 771-1400
Email
TPS - PS39 Room Blocks Regular Rate: $219/night Student Rate: $169/night (Limited availability, student code needed)
Students should email for student rate code.
Note: All activities take place at the Hilton San Francisco Union Square.
Hotel Policies Tax Policy Please note, the following taxes are not included into rates: 14% Room Tax Per Night
Cancellation Policy Cancellations within 72 hours of arrival will be charged a fee equivalent to 1 nights room and tax.
Child Policy Children 18 years and under are free.
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Visa Letter Information

Invitation Letter Requests
International attendees will need to obtain a visa to travel to the United States for this year’s conference. However, some attendees may be eligible for visa-free travel if they meet the necessary requirements. To determine which visa type you are eligible for, please use the Visa Wizard tool.
The Protein Society can issue a letter of invitation to support your visa application upon request. To receive a letter, you must meet one of the following criteria:
- Be a TPS member in good standing
- Be an author or presenter listed on a scientific submission for the meeting
- Be a registered attendee
Request a letter of invitation
Invitation Letter Requests from The Protein Society: To assist international attendees, The Protein Society will also issue invitation letters. To request one, you must first register for the meeting and pay the registration fees in full. No letters will be issued without paid registration. Please include your registration receipt in your request. Letters will be emailed to you on Protein Society letterhead within 5 business days.
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Travel Information

Visit San Francisco Travel for activities, restaurants, events & more. Content managed by external source.
Travel Discounts for Attendees
United Reservations (Discounts range from 2%-10%)
Please click here to book your flight(s).
You may also call the United Meetings Reservation Desk Monday – Friday at 800-426-1122 for booking assistance and refer to code ZQHS469472. Booking fees are waived for Meeting reservations. International customers may contact their local United Reservation Desk.
To make flight reservations online please click on discount code ZQHS469472 MileagePlus members earn valuable miles for their travel when using the Meetings discount code.
Delta Reservations (Discounts range from 2%-10%)
Please click here to book your flights.
You may also call Conferences and Events® at 800-328-1111* Monday–Friday, 8 a.m. – 6:30 p.m. (EST) and refer to Meeting Event Code NY3PB *Delta Airlines may charge an additional fee for reservations made over the phone.
About San Francisco In June, the average daily temperature in San Francisco, California is 69°F (21°C) for the high and 55°F (13°C) for the low. The weather is generally mild, with mostly sunny days and cool breezes.
Union Square is in an urban area of the city. Please use common sense and be aware of your surroundings. We encourage attendees to utilize Uber, Lyft, or other ride-share services.
Other Transportation Nearest Bus Station Eddy St. and Taylor St.
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