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Biomedical subjects

F W PUTNAM

Publications and source records attributed to F W PUTNAM.

At least 19 recordsLinked to original sources
PubMed1965

IMMUNOGLOBULIN STRUCTURE: AMINO- AND CARBOXYL-TERMINAL PEPTIDES OF TYPE I BENCE JONES PROTEINS.

Analysis of the amino acid sequence in Bence Jones proteins permits study of the structure of L-chains of normal immunoglobulins. An amino-terminal octadecapeptide containing the sole methionine residue occurs in many but not all immunoglobulins of antigenic type I. The carboxyl-terminal octapeptide appears invariant in type I proteins and ends in cysteine, which may have a cross-linking function.

Amino Acid Sequence↗
PubMed1964

GAMMA GLOBULIN ANTIGENIC TYPES DEFINED BY HEAVY CHAIN DETERMINANTS.

Two populations of immunologically distinguishable 7S gamma globulins in normal human serum and two corresponding antigenic types of myeloma 7S gamma globulins have been detected with rabbit antiserums to proteins associated with pathological conditions, the differences being related to the H-chains of 7S gamma globulin. No relationship exists with type I and type II antigenic classification, determined by L-chains. Human serums with various hereditary gamma globulin (Gm) specificities contain both types of 7S gamma globulin.

Antigens↗
PubMed1964

HEMOGLOBIN POLYMORPHISM: ITS RELATION TO SICKLING OF ERYTHROCYTES IN WHITE-TAILED DEER.

Hemoglobins with different electrophoretic mobilities are associated with bizarre shapes seen during ordinary light microscopy of erythrocytes from the white-tailed deer, Odocoileus virginianus; nonsickling is contingent upon a specific hemoglobin. Sickling in vitro, which isproduced to a maximum degree in the presence of oxygen and elevated pH, is not associated with hematological abnormalities or disease despite marked differences in physical characteristics of sickled and nonsickled cells.

Anemia↗
PubMed1963

The fate of injected Bence Jones protein.

Bence Jones protein injected into rabbits was excreted rapidly into the urine. The excreted protein retained the physicochemical and immunochemical properties of the injected Bence Jones protein. In spite of the rapid excretion, a significant portion of the injected Bence Jones protein was found to be metabolized. After reinjection of radioactive Bence Jones protein into the donor patient, only a little radioactivity was recovered in the urinary protein. The implications of these results are discussed.

Animals↗
PubMed1963

Antigenic relationships of Bence Jones proteins, myeloma globulins, and normal human gama-globulin.

By means of immunodiffusion and immunoelectrophoresis study has been made of antigenic relationships of Bence Jones proteins, and the three classes of normal and pathological immunoglobulins, 7S gamma, beta(2A), and beta(2M). All thirty-nine Bence Jones proteins studied could be classified into either one of two distinct antigenic types, A or B. Both types are related to the immunoelectrophoretically slow (S) fragment of a papain digest of normal gamma-globulin; B is related more closely than A, but neither has antigenic determinants in common with the fast (F) fragment. The 7S gamma myeloma globulins were either immunological type I or II. The papain digests of these proteins produced the S and F precipitin lines in immunoelectrophoresis but multiple bands in starch gel electrophoresis, especially in the F region. The S fraction of type I myeloma globulins is antigenically similar to Bence Jones protein of type B, and the S component of type II myeloma globulins has antigenic determinants in common with type A Bence Jones protein. Correspondingly, myeloma patients with type I globulins and proteinuria usually excrete type B Bence Jones proteins, whereas patients with type II excrete type A proteins. The F fragment is the part common to normal 7S gamma-globulin and types I and II myeloma globulins but is absent in beta(2A) and beta(2M) pathological globulins and in both types of Bence Jones proteins. Papain digests of beta(2A) myeloma globulins produced a single precipitin line in immunoelectrophoresis. beta(2A) myeloma globulins appeared to have two antigenic units, one in common with type B Bence Jones protein and normal gamma-globulin, and another specific to beta(2A). The beta(2A) myeloma patients excreted type B Bence Jones protein. The papain digest of a macroglobulin produced two precipitin lines, the faster of which had antigenic determinants in common with type B Bence Jones protein, the slower seemed specific for the macroglobulin. Five serum micromolecular globulins proved to be either type A or B Bence Jones proteins. From the above results, an antigenic map was constructed showing which determinants are shared and which are specific for normal 7S gamma-globulin, types I and II myeloma globulins, beta(2A) myeloma globulins, a macroglobulin, and types A and B Bence Jones proteins.

Aged↗