Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
|---|
| cholesterol inhibition of isopentenyl pyrophosphate delta3, delta2-isomerase in mycoplasma laidlawii. | cholesterol inhibits isopentenyl delta(3),delta(2)-isomerase of mycoplasma laidlawii in an apparently competitive fashion. the conversion of mevalonic acid to isopentenyl pyrophosphate is slightly stimulated. organisms grown in the presence of mevalonic-2-(14)c acid contain small amounts of radio-label in nucleic acid and protein fractions. most of the label is found in the lipids and is reduced dramatically in organisms grown with cholesterol. no significant accumulation of phosphorylated inter ... | 1970 | 4316364 |
| the synthesis of long-chain fatty acids by a cell-free system from mycoplasma laidlawii a. | 1970 | 4391501 | |
| membrane structure: spin labeling and freeze etching of mycoplasma laidawii. | a spin-labeled fatty acid was incorporated in vivo into the polar lipids of mycoplasma laidlawii membranes. the electron paramagnetic resonance signal from either intact cells or their extracted lipids reflected the fatty acid composition of the mycoplasma membranes. comparison of signals from intact cells, gramicidin-treated cells, heat-treated cells, and extracted lipids indicates that a major portion of the membrane lipids is in a semiviscous hydrocarbon environment. the results also show tha ... | 1970 | 4316683 |
| immunoelectrophoretic demonstration of proteolytic activity against human proteins by mycoplasma laidlawii. | 1970 | 4248067 | |
| d- and l-alanylphosphatidylglycerols from mycoplasma laidlawii, strain b. | 1969 | 4391533 | |
| synthesis and turnover of membrane protein and lipid in mycoplasma laidlawii. | 1969 | 4307353 | |
| observations on membranes of mycoplasma laidlawii strain b. | the cytoplasmic membrane of mycoplasma laidlawii strain b is solubilized by anionic and nonionic detergents, succinylation, phospholipase a, alkaline phosphatase, trypsin, and chymotrypsin. cationic detergents are without effect, as are chelating agents, even in the presence of high concentrations of monovalent cation. the detergent-solubilized membrane exhibits one peak in the analytical ultracentrifuge, but the sedimentation coefficient is dependent upon concentration of detergent. simple dial ... | 1969 | 5361209 |
| deoxyribonucleic acid homology and relative genome size in mycoplasma. | the deoxyribonucleic acid homologies of mycoplasma laidlawii type a and type b, m. pulmonis (#47 and #63), and m. hominis were determined by membrane methodology. the homology data revealed a difference in genome size between m. laidlawii type a and type b. this difference also held with stringent conditions of annealing (high temperature). little or negligible homology was shown to exist between the m. laidlawii strains type a and type b and m. pulmonis strains 47 and 63 and m. hominis. m. homi ... | 1969 | 5370271 |
| the effect of long chain fatty acid isomers on growth, fatty acid composition and osmotic fragility of mycoplasma laidlawii a. | 1969 | 5374018 | |
| proposal for classifying organisms related to mycoplasma laidlawii in a family sapromycetaceae, genus sapromyces, within the mycoplasmatales. | 1969 | 5391433 | |
| new sero-types of mycoplasma laidlawii isolated from mastitic milk and urogenital tracts of cattle. ii. typing of m. laidlawii by biological and serological methods. | 1969 | 5392349 | |
| new sero-types of mycoplasma laidlawii isolated from mastitic milk and urogenital tracts of cattle. i. isolation of m. laidlawii. | 1969 | 5817669 | |
| repair replication of dna in ultraviolet irradiated mycoplasma laidlawii b. | 1969 | 5358643 | |
| mycoplasma membrane lipids: variations in fatty acid composition. | the fatty acid composition of the membrane polar lipids of mycoplasma laidlawii b can be dramatically altered. these variations reslut in characteristic morphological chlanges, and in most cases the cells remain viable. this organism should provide a useful system for clarifying the role of fatty acyl chains in biological membranes. | 1969 | 5777213 |
| mycoplasma laidlawii in human burns. | mycoplasma laidlawii was recovered from burns from 13 of 52 patients. in most cases, cocci or bacilli were isolated simultaneously. | 1969 | 5784230 |
| characterization of the plasma membrane of mycoplasma laidlawii. v. effects of selective removal of protein and lipid. | 1969 | 5792241 | |
| characterization of the plasma membrane of mycoplasma laidlawii. vi. potassium transport. | 1969 | 5792242 | |
| biosynthesis of glucosyl diglycerides by mycoplasma laidlawii strain b. | monoglucosyl diglyceride is synthesized from 1,2-diglyceride and uridine-5'-diphosphoglucose (udp); diglucosyl diglyceride from monoglucosyl diglyceride, and uridine-5'-diphosphoglucose by membranes of mycoplasma laidlawii strain b. all of these enzymatic activities reside in the membrane. membranes solubilized by detergent action or succinylation and acetone powders of membranes were inactive. requirements for mg(2+), udp, and appropriate lipid acceptor were demonstrated for biosynthesis of bot ... | 1969 | 5808075 |
| the role of lipids in membrane transport in mycoplasma laidlawii. | 1969 | 5823712 | |
| calorimetric evidence for the liquid-crystalline state of lipids in a biomembrane. | both membranes of mycoplasma laidlawii and water dispersions of protein-free membrane lipids exhibit thermal phase transitions that can be detected by differential scanning calorimetry. the transition temperatures are lowered by increased unsaturation in the fatty acid residues, but in each case they are the same for membranes and lipids. the transitions resemble those observed for synthetic lipids in the lamellar phase in water, which arise from melting of the hydrocarbon chains within the phos ... | 1969 | 5257955 |
| immunological analysis of mycoplasma membranes. | the antigens responsible for the production of antibodies to mycoplasma laidlawii and m. gallisepticum causing growth and metabolic inhibition of these organisms were localized in the cell membrane. various membrane fractions were tested for serological activity. membrane lipids were completely or almost completely inactive, whereas several preparations of defatted membrane proteins retained some serological activity, shown by their ability to stimulate metabolic inhibition antibody in rabbits a ... | 1969 | 4981055 |
| dna replication in mycoplasma laidlawii b. | 1969 | 4890600 | |
| rapid determination by light scattering of growth parameters of mycoplasma laidlawii in liquid media. | an impediment to progress in the study of the course of growth, the effects of medium components, antibiotics, etc., of mycoplasma has been the cumbersome methods of growth measurement currently in use. heretofore, it required the plating of numerous samples during growth, at least in triplicate, after appropriate dilution, followed by a delay of 2 to 3 days before the colonies developed so that counts could be made. we applied the technique of light scattering to measure the growth of mycoplasm ... | 1969 | 4896103 |
| characteristics of a new sterol-nonrequiring mycoplasma. | two mycoplasma strains recovered from tissue culture environments were found to grow in complex media devoid of serum or serum fractions containing cholesterol and in a cholesterol-free synthetic medium. neither strain was capable of synthesizing pigmented carotenoids, although these compounds are present in, and characteristic of, other sterol-nonrequiring mycoplasmas. serological tests and an analysis of their cell protein patterns obtained by gel electrophoresis indicated that the isolates we ... | 1969 | 4892385 |
| an ultrastructural study of mycoplasma laidlawii type a and two strains of mycoplasma laidlawii isolated from the oviducts of dairy cows. | 1968 | 4888099 | |
| deoxyribonucleate binding and transformation in mycoplasma laidlawii. | 1968 | 4865478 | |
| physiological and serological comparisons among strains of mycoplasma granularum and mycoplasma laidlawii. | mycoplasma granularum strains grew on a medium devoid of animal serum or of serum fractions containing sterols; all strains possessed properties, including carotenoid biosynthesis, similar to those described for m. laidlawii. some common antigenic components were noted among m. granularum and m. laidlawii strains by indirect fluorescent-antibody tests. the growth of m. granularum strains was slightly inhibited by antiserum to m. laidlawii pg-8, and the electrophoretic patterns of cell proteins o ... | 1968 | 4870272 |
| macromolecular synthesis and thymineless death in mycoplasma laidlawii b. | the relationships between macromolecular synthesis and viability have been studied in the pleuropneumonia-like organism mycoplasma laidlawii b adapted to a semidefined grwoth medium. this organism exhibited an absolute growth requirement for the nucleosides uridine and thymidine, a partial requirement for guanosine and deoxyguanosine, but no requirement for adenosine, deoxyadenosine, cytosine, and deoxycytosine. cytosine and deoxycytosine partially satisfied the requirement for uridine. loss in ... | 1968 | 4881702 |
| characterization of the plasma membrane of mycoplasma laidlawii. iv. structure and composition of membrane and aggregated components. | 1968 | 5650391 | |
| characterization of the plasma membrane of mycoplasma laidlawii. 3. the formation and aggregation of small lipoprotein structures derived from sodium dodecyl sulfate-solubilized membrane components. | 1968 | 5650390 | |
| the lipid composition of mycoplasma laidlawii strain b. | 1. total lipid was extracted from mycoplasma laidlawii strain b with chloroform-methanol mixtures and fractionated into neutral lipid, glycolipid and phospholipid components by chromatography on silicic acid. 2. saponification of the glycolipid fraction, which represented nearly half of the total lipid, yielded two glycosides for which the structures o-alpha-d-glucopyranosyl-(1-->1)-d-glycerol and o-alpha-d-glucopyranosyl-(1-->2)-o-alpha-d-glucopyranosyl-(1-->1)-d-glycerol were established. 3. t ... | 1968 | 4297044 |
| carotenoids as protectors against photodynamic inactivation of the adenosine triphosphatase of mycoplasma laidlawii membranes. | 1968 | 4234699 | |
| control of nadh oxidation by adp in membranes from mycoplasma laidlawii. | 1967 | 4294270 | |
| characterization of the plasma membrane of mycoplasma laidlawii. ii. modes of aggregation of solubilized membrane components. | 1967 | 6058126 | |
| role of carotenoids and cholesterol in the growth of mycoplasma laidlawii. | 1967 | 6025421 | |
| a comparison of the osmotic and passive permeability properties of mycoplasma laidlawii and mycoplasma hominis. | 1967 | 6035538 | |
| characterization of the plasma membrane of mycoplasma laidlawii. i. sodium dodecyl sulfate solubilization. | 1967 | 6048810 | |
| glucolipids from mycoplasma laidlawii and streptococcus mg. | 1967 | 6049904 | |
| influence of lipid components of mycoplasma laidlawii membranes on osmotic fragility of cells. | razin, s. (university of connecticut, storrs), m. e. tourtellotte, r. n. mcelhaney, and j. d. pollack. influence of lipid components of mycoplasma laidlawii membranes on osmotic fragility of cells. j. bacteriol. 91:609-616. 1966.-lipid composition of mycoplasma laidlawii membranes could be significantly changed by variations in the growth medium. the effect of these changes on the osmotic fragility of the cells was studied. cholesterol, incorporated into the membrane from the growth medium, had ... | 1966 | 5883100 |
| growth inhibition of mycoplasma by inhibitors of polyterpene biosynthesis and its reversal by cholesterol. | smith, paul f. (university of south dakota, vermillion), and carl v. henrikson. growth inhibition of mycoplasma by inhibitors of polyterpene biosynthesis and its reversal by cholesterol. j. bacteriol. 91:1854-1858. 1966.-compounds which inhibit enzymatic reactions in the biosynthetic pathway to carotenoids inhibited growth of a sterol-nonrequiring species, mycoplasma laidlawii, strain b, and m. hominis, strain 07. since m. hominis lacks the enzymes for polyterpene biosynthesis, the inhibitory co ... | 1966 | 5937241 |
| adenosine triphosphatase activity of mycoplasma membranes. | rottem, shlomo (hebrew university, jerusalem, israel), and shmuel razin. adenosine triphosphatase activity of mycoplasma membranes. j. bacteriol. 92:714-722. 1966.-adenosine triphosphatase activity of mycoplasma laidlawii, m. gallisepticum, and mycoplasma sp. strain 14 was confined to the cell membrane. the enzymatic activity was dependent on magnesium, but was not activated by sodium and potassium. ouabain did not inhibit the adenosine triphosphatase activity of the mycoplasmas, and did not int ... | 1966 | 4224219 |
| carotenoids and cholesterol in membranes of mycoplasma laidlawii. | 1965 | 5882653 | |
| morphology of mycoplasma laidlawii type a. ii. effect of glucose on growth and cellular morphology. | anderson, d. l. (university of minnesota, minneapolis), m. e. pollock, and l. f. brower. morphology of mycoplasma laidlawii type a. ii. effect of glucose on growth and cellular morphology. j. bacteriol. 90:1768-1777. 1965.-cells of mycoplasma laidlawii a grown in soy peptone-yeast extract (sp-ye) broth reached higher maximal titers than cells grown in sp-ye supplemented with 0.2% glucose, and remained viable longer than glucose-grown cells. moreover, addition of glucose to sp-ye markedly affecte ... | 1965 | 5854595 |
| use of dialyzing culture technique for high yield of mycoplasma. | pollock, mary e. (university of minnesota, minneapolis). use of dialyzing culture technique for high yield of mycoplasma. j. bacteriol. 90:1682-1685. 1965.-the saprophytic pleuropneumonia-like organism, mycoplasma laidlawii, type a, was cultivated within a dialyzing membrane suspended in a reservoir of uninoculated medium. generation time was not decreased by this method, but the period of active growth was prolonged, and the final yield was 10-fold that attained by the usual cultural methods. a ... | 1965 | 5322724 |
| morphology of mycoplasma laidlawii type a. i. comparison of electron microscopic counts with colony-forming units. | anderson, d. l. (university of minnesota, minneapolis), m. e. pollock, and l. f. brower. morphology of mycoplasma laidlawii type a. i. comparison of electron microscopic counts with colony-forming units. j. bacteriol. 90:1764-1767. 1965.-cells of mycoplasma laidlawii a grown in dialyzing flask cultures were counted with the electron microscope by use of a spray technique which deposited mixtures of polystyrene latex of known concentration and m. laidlawii in discrete droplet patterns on specimen ... | 1965 | 5322728 |
| membrane subunits of mycoplasma laidlawii and their assembly to membranelike structures. | 1965 | 5216355 | |
| effect of cholesterol on the sensitivity of mycoplasma laidlawii to the polyene antibiotic filipin. | weber, morton m. (st. louis university school of medicine, st. louis, mo.), and stephen c. kinsky. effect of cholesterol on the sensitivity of mycoplasma laidlawii to the polyene antibiotic filipin. j. bacteriol. 89:306-312. 1965.-the polyene antibiotic, filipin, inhibited growth and caused lysis of mycoplasma laidlawii cells which had been cultured in the presence of cholesterol. the antibiotic did not inhibit growth and did not promote lysis of the organism when grown in the absence of cholest ... | 1965 | 14255695 |
| glucose-containing phospholipids in mycoplasma laidlawii, strain b. | 1965 | 14280456 | |
| the action of amphotericin b on mycoplasma laidlawii. | 1965 | 14332454 | |
| diphosphatidyl glycerol in mycoplasma laidlawii. | 1965 | 16562032 | |
| defined medium for mycoplasma laidlawii. | tourtellotte, mark e. (university of connecticut, storrs), harold j. morowitz, and phil kasimer. defined medium for mycoplasma laidlawii. j. bacteriol. 88:11-15. 1964.-a defined medium for the pleuropneumonia-like organism mycoplasma laidlawii b is described in which absolute requirements for coenzyme a and longchain fatty acids were demonstrated. this organism did not require cholesterol or macromolecules of high molecular weight, but did show a growth requirement for peptides. optimal growth i ... | 1964 | 14197875 |
| mycoplasma laidlawii var. inocuum comb. nov. | 1964 | 5874544 | |
| glucose metabolism of two strains of mycoplasma laidlawii. | castrejon-diez, jaime (tulane university school of medicine, new orleans, la.), thelma n. fisher, and earl fisher, jr. glucose metabolism of two strains of mycoplasma laidlawii. j. bacteriol. 86:627-636. 1963.-two strains of mycoplasma laidlawii were incubated in systems containing d-glucose-c(14); carbon dioxide, acetate, pyruvate, and lactate were isolated from appropriate fluids after resting-cell and growth experiments. in resting-cell experiments, radioactivity recoveries were shown to be 9 ... | 1963 | 14066454 |
| fatty acid requirements of mycoplasma laidlawii. | 1963 | 14114935 | |
| nutritional requirements and metabolism of mycoplasma laidlawii. | 1963 | 13973365 | |
| nucleic acid precursor requirements of mycoplasma laidlawii. | 1962 | 14490761 |