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US3892532A Expired / Lapsed US ⏱️ 0.0 years remaining

Fluorescamine peptide analyzer

Assignee: F Hoffmann La Roche AG
•
Filing: 1973-10-24
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Granted: 1975-07-01
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Expires: 1993-10-24
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Abstract

Abstract A peptide analyzer for detection of peptides in column eluates which can be coupled to any peptide separating column comprising a valve system for sampling of the column eluate and a novel stopped-flow hydrolyzer for on line hydrolysis of the stream samples. The hydrolyzer comprises a central cylindrical plate having a plurality of longitudinal channels symmetrically spaced about an internal arc. The central plate is connected to a stepping motor and is held in a liquid tight relationship between an upper and a lower plate, each plate having two channels, one for fluid inlet and one for fluid outlet. The fluid inlet and outlet channels are operatively connected to two of the channels in the central plate. Rotation of the central plate after filling of a channel therein with peptide sample solution containing alkali causes trapping and transfer of a part of said sample solution. Release of the sample solution does not occur until the said central plate channel reaches the outlet station. During the period of entrapment, the sample undergoes alkaline hydrolysis, which hydrolysis is assisted by maintaining the aforesaid apparatus at an elevated temperature.

Inventors

  • 👤 Peter Bohlen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 09:29
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/68; G01N33/6803; G01N21/00; G01N21/75; G01N21/77; G01N2021/7769; G01N2021/7786; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 554 words
AN IMPROVED FLUORESCENCE PEPTIDE ANALYZER WHICH ANALYZER COMPRISES IN COBINATION: A. PEPTIDE SAMPLE SEPARATION MEANS WHEREIN A PEPTIDE CONTAINING SAMPLE IS ELUTED INTO AN ELUENT STREAM OF VARYING PEPTIDE CONTENT, B. DISCONTINUOUS TWO-POSITION SAMPLING VALVE MEANS IN OPERATIVE FLUID FLOW RELATIONSHIP WITH SAID PEPTIDE SAMPLE SEPARATION MEANS WHEREBY SAID ELUENT STREAM IS BROUGH TO SAID SAMPLING VALVE MEANS WHEREIN IN A FIRST VALVE POSTION SAID ELUENT STREAM IS SENT TO A FRACTION COLLECTOR AND IN A SECOND VALVE POSITION SAID ELUENT STREAM IS DIVERTED AS A SAMPLE STREAM, C. ALKALINE SOLUTION ADDITION VALVE IN OPERATIVE FLUID FLOW RELATIONSHIP WITH SAID DIVERTED SAMPLE STREAM WHEREIN ALKALINE SOLUTION DERIVED FROM AN ALKALINE SOLUTION STORAGE MEANS IN OPERATIVE FLUID FLOW RELATIONSHIP WITH SAID ADDITION VALVE IS ADDED TO SAID DIVERTED SAMPLE STREAM SO AS TO PODUCE AN ALKALINE SAMPLE STREAM, D. HYDROLYZER COMPONENT IN OPERATIVE FLUID FLOW RELATIONSHIP WITH SAID ALKALINE SAMPLE STREAM, SAID HYDROLYZER COMPONENT COMPRISING AN OUTER ENCLOSURE CONTAINING HEATING MEANS AND AN INNER HYDROLYZER VALVE, SAID HYDROLYZER VAVE COMPRISING I. A CYLINDRICAL PLATE HAVING A PLURALITY OF CHANNELS BORED THROUGH ITS LONGITUDINAL AXIS AND DISPOSED SYMMETRICALLY AROUND ITS CENTER AXIS SAID CYLINDRICAL PLATE BEING ROTATABLY MOUNTED BETWEEN AN UPPER AND A LOWER FIXED PLATE, ONE OF SAID FIXED PLATES HAVING ALKALINE SAMPLE STREAM INLET MEANS AND BUFFER SOLUTION INLET MEANS WHEREIN BUFFER SOLUTION IS PROVIDED FROM A BUFFER SOLUTION STORAGE MEANS WHICH IS IN OPERATIVE FLOW RELATIONSHIP WITH SAID BUFFER SOLUTION INLET MEANS AND THE OTHER HAVING WASTE OUTLET MEANS AND DETECTION SYSTEM OUTLET MEANS, SAID INLET AND OUTLET MEANS BEING SO CONSTRUCTED AND ARRANGED AS TO BE IN OPERATIVE FLUID FLOW RELATIONSHIP WITH ANY TWO SUITABLY OPPOSED CHANNELS IN SAID CYLINDIRCAL PLATE AND IN PARTICLULAR SAID ALKALINE SAMPLE STREAM INLET MEANS AND SAID WASTE OUTLET MEANS ARE IN OPERATIVE FLUID FLOW RELATIONSHIP WITH EACH OTHER THROUGH A SUITABLY OPPOSED CHANNEL IN SAID CYLINDIRCAL PLATE AND SAID BUFFER SOLUTION INLET MEANS AND SAID DETECTION SYSTEM OUTLET MEANS ARE IN OPERATIVE FLUID FLOW RELATIONSHIP WITH EACH OTHER THROUGH A SUITABLY OPPOSED CHANNEL IN SAID CYLINDRICAL PLATE, AND II. A STEPPING MOTOR OPERATIVELY CONNECTED TO SAID CYLINDRICAL PLATE, SAID STEPPING MOTOR HAVING STEP CORRESPONDING TO THE NUMBER OF CHANNELS IN SAID CYLINDRICAL PLATE WHICH STEPPING MOTOR UPON ACTIVATION WILL CAUSE CORRESPONDING ROTATION OF SAID CYLINDRICAL PLATE, WHEREIN ROTATION OF SAID CYLINDRICAL PLATE WILL CAUSE ENTRAPMENT AND TRANSFER OF ALKALINE SAMPLE STREAM CONTAINED IN THE CHANNEL OPPOSING SAID ALKALINE SAMPLE STREAM INLET MEANS AND WASTE OUTLET MEANS, SAID ENTRAPMENT AND TRANSFER CONTINUING WITH CONCOMITANT HYDROLYSIS OF THE PEPTIDES IN SAID ALKALINE SAMPLE STREAM TO FORM A HYDROLYZED SAMPLE STREAM CONTAINING HYDROLYSIS PRODUCTS HAVING PRIMARY AMINO GROUPS UNTIL SAID CHANNEL HAS BEEN ROTATED TO A POSITION OPPOSING SAID BUFFER SOLUTION INLET MEANS AND SAID DETECTION SYSTEM OUTLET MEANS WHERE SAID HYDROLYZED SAMPLE STREA IS WASHED OUT FROM SAID HYDROLYZER COMPONENT BY BUFFER SOLUTION FROM SAID INLET MEANS, AND, E. FLUORESCENCE DETECTION MEANS IN OPERATIVE FLUID FLOW RELATIONSHIP WITH SAID DETECTION SYSTEM OUTLET MEANS WHEREIN SAID HYDROLYZED SAMPLE STREAM IS TREATED WITH A FLUOROGEN PROVIDED FROM A FLUOROGEN STROAGE MEANS IN OPERATIVE FLUID FLOW RELATIONSIP WITH SAID HYDROLYZED SAMPLE STREAM WHICH PRODUCES A FLUOROPHOR BY REACTION WITH THE PRIMARY AMINO GROUP OF THE HYDROLYSIS PRODUCTS IN SAID HYDROLYZED SAMPLE STREAM, SAID FLUOROPHOR IS EXCITED AND THE RESULTING FLUORESCENCE MEASURED.
Claim 2
Dependent Claim 554 words
AN IMPROVED FLUORESCENCE PEPTIDE ANALYZER WHICH ANALYZER COMPRISES IN COBINATION: A. PEPTIDE SAMPLE SEPARATION MEANS WHEREIN A PEPTIDE CONTAINING SAMPLE IS ELUTED INTO AN ELUENT STREAM OF VARYING PEPTIDE CONTENT, B. DISCONTINUOUS TWO-POSITION SAMPLING VALVE MEANS IN OPERATIVE FLUID FLOW RELATIONSHIP WITH SAID PEPTIDE SAMPLE SEPARATION MEANS WHEREBY SAID ELUENT STREAM IS BROUGH TO SAID SAMPLING VALVE MEANS WHEREIN IN A FIRST VALVE POSTION SAID ELUENT STREAM IS SENT TO A FRACTION COLLECTOR AND IN A SECOND VALVE POSITION SAID ELUENT STREAM IS DIVERTED AS A SAMPLE STREAM, C. ALKALINE SOLUTION ADDITION VALVE IN OPERATIVE FLUID FLOW RELATIONSHIP WITH SAID DIVERTED SAMPLE STREAM WHEREIN ALKALINE SOLUTION DERIVED FROM AN ALKALINE SOLUTION STORAGE MEANS IN OPERATIVE FLUID FLOW RELATIONSHIP WITH SAID ADDITION VALVE IS ADDED TO SAID DIVERTED SAMPLE STREAM SO AS TO PODUCE AN ALKALINE SAMPLE STREAM, D. HYDROLYZER COMPONENT IN OPERATIVE FLUID FLOW RELATIONSHIP WITH SAID ALKALINE SAMPLE STREAM, SAID HYDROLYZER COMPONENT COMPRISING AN OUTER ENCLOSURE CONTAINING HEATING MEANS AND AN INNER HYDROLYZER VALVE, SAID HYDROLYZER VAVE COMPRISING I. A CYLINDRICAL PLATE HAVING A PLURALITY OF CHANNELS BORED THROUGH ITS LONGITUDINAL AXIS AND DISPOSED SYMMETRICALLY AROUND ITS CENTER AXIS SAID CYLINDRICAL PLATE BEING ROTATABLY MOUNTED BETWEEN AN UPPER AND A LOWER FIXED PLATE, ONE OF SAID FIXED PLATES HAVING ALKALINE SAMPLE STREAM INLET MEANS AND BUFFER SOLUTION INLET MEANS WHEREIN BUFFER SOLUTION IS PROVIDED FROM A BUFFER SOLUTION STORAGE MEANS WHICH IS IN OPERATIVE FLOW RELATIONSHIP WITH SAID BUFFER SOLUTION INLET MEANS AND THE OTHER HAVING WASTE OUTLET MEANS AND DETECTION SYSTEM OUTLET MEANS, SAID INLET AND OUTLET MEANS BEING SO CONSTRUCTED AND ARRANGED AS TO BE IN OPERATIVE FLUID FLOW RELATIONSHIP WITH ANY TWO SUITABLY OPPOSED CHANNELS IN SAID CYLINDIRCAL PLATE AND IN PARTICLULAR SAID ALKALINE SAMPLE STREAM INLET MEANS AND SAID WASTE OUTLET MEANS ARE IN OPERATIVE FLUID FLOW RELATIONSHIP WITH EACH OTHER THROUGH A SUITABLY OPPOSED CHANNEL IN SAID CYLINDIRCAL PLATE AND SAID BUFFER SOLUTION INLET MEANS AND SAID DETECTION SYSTEM OUTLET MEANS ARE IN OPERATIVE FLUID FLOW RELATIONSHIP WITH EACH OTHER THROUGH A SUITABLY OPPOSED CHANNEL IN SAID CYLINDRICAL PLATE, AND II. A STEPPING MOTOR OPERATIVELY CONNECTED TO SAID CYLINDRICAL PLATE, SAID STEPPING MOTOR HAVING STEP CORRESPONDING TO THE NUMBER OF CHANNELS IN SAID CYLINDRICAL PLATE WHICH STEPPING MOTOR UPON ACTIVATION WILL CAUSE CORRESPONDING ROTATION OF SAID CYLINDRICAL PLATE, WHEREIN ROTATION OF SAID CYLINDRICAL PLATE WILL CAUSE ENTRAPMENT AND TRANSFER OF ALKALINE SAMPLE STREAM CONTAINED IN THE CHANNEL OPPOSING SAID ALKALINE SAMPLE STREAM INLET MEANS AND WASTE OUTLET MEANS, SAID ENTRAPMENT AND TRANSFER CONTINUING WITH CONCOMITANT HYDROLYSIS OF THE PEPTIDES IN SAID ALKALINE SAMPLE STREAM TO FORM A HYDROLYZED SAMPLE STREAM CONTAINING HYDROLYSIS PRODUCTS HAVING PRIMARY AMINO GROUPS UNTIL SAID CHANNEL HAS BEEN ROTATED TO A POSITION OPPOSING SAID BUFFER SOLUTION INLET MEANS AND SAID DETECTION SYSTEM OUTLET MEANS WHERE SAID HYDROLYZED SAMPLE STREA IS WASHED OUT FROM SAID HYDROLYZER COMPONENT BY BUFFER SOLUTION FROM SAID INLET MEANS, AND, E. FLUORESCENCE DETECTION MEANS IN OPERATIVE FLUID FLOW RELATIONSHIP WITH SAID DETECTION SYSTEM OUTLET MEANS WHEREIN SAID HYDROLYZED SAMPLE STREAM IS TREATED WITH A FLUOROGEN PROVIDED FROM A FLUOROGEN STROAGE MEANS IN OPERATIVE FLUID FLOW RELATIONSIP WITH SAID HYDROLYZED SAMPLE STREAM WHICH PRODUCES A FLUOROPHOR BY REACTION WITH THE PRIMARY AMINO GROUP OF THE HYDROLYSIS PRODUCTS IN SAID HYDROLYZED SAMPLE STREAM, SAID FLUOROPHOR IS EXCITED AND THE RESULTING FLUORESCENCE MEASURED.
Claim 3
Dependent Claim 19 words
The analyzer of claim 1 wherein from about 10 to about 60 channels are contained in said cylindrical plate.
Claim 4
Dependent Claim 28 words
The analyzer of claim 1 wherein each said channel in said cylindrical plate has a volume in the range of from about 10 to about 100 Mu 1.
Claim 5
Dependent Claim 60 words
The analyzer of claIm 1 wherein said cylindrical plate is clamped between said upper and lower fixed plates and the surfaces between said cylindrical plate and said fixed plates are machined to a low friction finish so as to provide a liquid tight seal thereby preventing leakage of the liquid between the channels of said cylindrical plate and the plates.
Claim 6
Dependent Claim 40 words
The analyzer of claim 1 wherein said lower fixed plate contains said alkaline sample stream inlet means and said buffer solution inlet means and the said upper fixed plate contains said waste outlet means and said detection system outlet means.
Claim 7
Dependent Claim 48 words
The analyzer of claim 1 wherein the alkaline solution addition valve adds alkaline solution to said diverted sample stream when said discontinuous 2-position sample valve means is in its second valve position and recycles said alkaline solution when said discontinuous valve means is in its first valve position.
Claim 8
Dependent Claim 24 words
The analyzer of claim 1 wherein said discontinuous 2-position sampling valve and said step motor are activated by signal generated from said fraction collector.

References Cited (Backward Citations)

US2973117A Cited
US3230048A Cited
US3222135A Cited
US3334969A Cited
US3404780A Cited
US3536450A Cited
US3747630A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-06-30 1978-12-30 1979-07-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-06-30 1982-12-30 1983-07-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-06-30 1986-12-30 1987-07-01 $7700.00 Window Closed / Lapsed

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