Bryozoa (Ectoprocta)

Soule, Dorothy F.; Soule, John D.

doi:10.1016/b978-0-12-328440-2.50008-5

Cited by 6 publications

(13 citation statements)

References 42 publications

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“…The same methods may be used to prove Theorems 3 and 4 in the case where X is any connected regular one-dimensional scheme and T* is étale cohomology, in which case ƒ j is defined by Grothendieck's absolute purity theorem (SGA5,1 §5.1). In the case X = Spec(O^), 0 S the ring of S-integers in a global field, this extends more ad-hoc results of Soulé in [9].…”

Section: Theorem 3 the Map -Yf In The Diagram Above Is Equal Tosupporting

confidence: 61%

“…Using Brown's generalized cohomology "with supports" of simplicial sheaves [6], and the functor Z^ of [5] instead of the "+" construction one can mimic in the category of simplicial sheaves the methods of [3] and [9] to obtain Chern classes for all p > 0 c? p \KJ(X) = yzj-Y) -H*-P(X, r*) whose domains are the relative tf-groups, defined so as to force a Quillen-style localization sequence.…”

Section: Q G H DI (X Gl(0 X ) T?) (D = 1 or 2)mentioning

confidence: 99%

“…The statements of our theorems depend on defining global analogues of Quillen's construction of Chern classes for the ^-theory of a ring [3], [9]. We can use any of the standard cohomology theories defined on 1/, such as étale or crystalline cohomology or even the Chow ring.…”

Section: In [1] and [2]mentioning

confidence: 99%

“…Here we announce generalizations of the results of [1] and [2] to Quillen's higher algebraic ^-theory [8] which may help to illuminate the relationship between algebraic AT-theory and more ordinary cohomology theories.The statements of our theorems depend on defining global analogues of Quillen's construction of Chern classes for the ^-theory of a ring [3], [9]. We can use any of the standard cohomology theories defined on 1/, such as étale or crystalline cohomology or even the Chow ring.…”

mentioning

confidence: 99%

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Riemann-Roch theorems for higher algebraic 𝐾-theory

Gillet¹

1980

Bull. Amer. Math. Soc.

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In [1] and [2]Baum, Fulton and MacPherson, generalizing the celebrated Grothendieck-Riemann-Roch theorem, proved that given a category 1/ of quasi-projective schemes there is a natural transformation called the Todd class of functors (covariant for proper morphisms) between K' 0 , the homology algebraic ^-theory of coherent sheaves and any of the standard homology theories. Here we announce generalizations of the results of [1] and [2] to Quillen's higher algebraic ^-theory [8] which may help to illuminate the relationship between algebraic AT-theory and more ordinary cohomology theories.The statements of our theorems depend on defining global analogues of Quillen's construction of Chern classes for the ^-theory of a ring [3], [9]. We can use any of the standard cohomology theories defined on 1/, such as étale or crystalline cohomology or even the Chow ring. All of these theories can be realized for each X G 1/ as the hypercohomology of a graded complex or procomplex T* 9 j E Z, of sheaves on the Zariski site of X. All of these theories have Chern classes for representations of sheaves of groups and there exist universal classes Q G H di (X, GL(0 X whose domains are the relative tf-groups, defined so as to force a Quillen-style localization sequence. One can show that these classes coincide for p = 0 with those of Iversen [7]. For p > 0 they are group homomorphisms and are compatible with products in the way described by Bloch [3], hence one can define a Chern character with supports, which is a ring homomorphism chï : © KJX, X-Y) -* © H^(Z, rf ) ® Q.

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Section: Theorem 3 the Map -Yf In The Diagram Above Is Equal Tosupporting

confidence: 61%

Section: Q G H DI (X Gl(0 X ) T?) (D = 1 or 2)mentioning

confidence: 99%

Section: In [1] and [2]mentioning

confidence: 99%

mentioning

confidence: 99%

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Riemann-Roch theorems for higher algebraic 𝐾-theory

Gillet¹

1980

Bull. Amer. Math. Soc.

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“…This treatment effectively solubilizes nuclear matrix-associated large T (Staufenbiel and Deppert, 1983), and, in addition, the small amount of acylated large T associated with the plasma membrane lamina Deppert, 1983, 1985). Our fractionation protocol thus solubilizes all known cellular subclasses of large T. Since the majority of large T (>95%; Pope and Rowe, 1964;Rapp et al, 1964;Soule and Butel, 1979;Deppert, 1980;Klockmann and Deppert, 1983) is present in the cell nucleus, the various extracts contain predominantly nuclear large T. However, it is important to be aware that the plasma membrane-associated forms of large T are also recovered.…”

Section: Resultsmentioning

confidence: 99%

The kinase activity of SV40 large T antigen is mediated by a cellular kinase.

Walser¹,

Deppert²

1986

The EMBO Journal

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Large T antigen (large T) extracted from SV40-infected or transformed cells exhibits an in vitro protein kinase activity, whose origin and biological significance up to now had been obscure. We have addressed the questions of whether this activity is intrinsic to large T or arises by association with a cellular kinase, and, furthermore, whether this activity might play a biological role in vivo. Instead of analyzing large T from whole-cell lysates, where non-specific association of a cellular kinase(s) with large T might easily occur, we analyzed individual cellular subclasses of large T, isolated from their in vivo locations. In contrast to large T isolated from whole-cell lysates which was always kinase positive, none of the cellular subclasses of large T prepared by in situ fractionation of SV40-transformed mKSA cells exhibited detectable in vitro kinase activity. We could demonstrate that our fractionation conditions neither inactivated the large T-associated kinase activity nor dissociated it from large T when they were applied to kinase-positive large T isolated from whole-cell lysates. We conclude that large T does not contain an intrinsic kinase activity. This conclusion was further supported by our finding that it was possible to remove the large Tassociated kinase activity from kinase-positive large T preparations and to reconstitute it by incubating the kinasenegative large T with cell lysates from various cell lines. Therefore, the simplest way of interpreting our results is that the in vitro kinase activity measured with large T preparations from whole-cell lysates is the result of an in viro association of a cellular kinase(s) with large T during certain conditions of cell lysis.

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Detection of a complex of SV40 large tumor antigen and 53K cellular protein on the surface of SV40‐transformed mouse cells

Santos

Butel

1982

J of Cellular Biochemistry

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The possible interaction between simian virus 40 (SV40) large tumor antigen (T-ag) and cellular proteins in the plasma membrane of SV40-transformed mouse cells was investigated. The presence of SV40 T-ag, 53,000 (53K) cellular protein, and histocompatibility (H-2) antigens on the surface of SV40-transformed cells was demonstrated by immunofluorescence. The use of lactoperoxidase-catalyzed cell surface iodination and a differential immunoprecipitation technique established that large T-ag is associated with the 53K host-coded protein on the surface of the transformed cells. In contrast, no detergent-stable complex between large t-ag and H-2 antigens was detected. Both labeled T-ag and 53K protein were coprecipitated from surface-iodinated SV40-transformed cells by monoclonal antibodies directed against either the viral or the cellular protein. Based on the unique antigenic sites recognized by the anti-T monoclonal antibodies, it appears that both the carboxy and amino termini of the T-ag polypeptide are exposed on the surface of SV40-transformed mouse cells. The nature of the association between surface T-ag and 53K protein, as well as that between the molecular complex and the plasma membrane, remains to be determined. The possible effect of the surface-associated T-ag/53K complex on cellular proliferation is considered.

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Bryozoa (Ectoprocta)

Cited by 6 publications

References 42 publications

Riemann-Roch theorems for higher algebraic 𝐾-theory

Riemann-Roch theorems for higher algebraic 𝐾-theory

The kinase activity of SV40 large T antigen is mediated by a cellular kinase.

Detection of a complex of SV40 large tumor antigen and 53K cellular protein on the surface of SV40‐transformed mouse cells

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