Contacts of the helix formed by residues 509 - 513 (chain C) in PDB entry 2BT4
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with ASN 509 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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508C SER* 1.3 71.5 - - - +
510C ILE* 1.3 63.5 + - - +
511C HIS* 2.9 29.7 + - - +
512C GLN* 3.0 31.7 + - - +
513C ARG* 3.5 7.1 - - - +
531C ALA* 4.3 3.1 - - - -
532C GLY* 3.5 12.1 - - - +
1923J SER 3.1 17.2 + - - -
1926J ALA 2.8 27.5 + - - -
1927J ASP 3.6 17.3 + - - +
1929J VAL* 3.9 14.1 - - - +
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Residues in contact with ILE 510 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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485C HIS* 4.4 6.3 - - + -
506C HIS* 4.1 35.0 - - + +
508C SER* 3.2 7.4 + - - +
509C ASN* 1.3 72.1 + - - +
511C HIS* 1.3 81.6 + - + +
512C GLN 3.0 1.8 + - - -
513C ARG* 3.1 23.4 + - - +
517C ARG* 3.3 27.6 - - + +
518C HIS* 3.2 28.5 - - - +
520C SER* 5.0 8.3 - - - -
531C ALA* 4.7 3.3 - - + +
560C CA2 3.8 34.1 - - + +
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Residues in contact with HIS 511 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
509C ASN* 2.9 22.1 + - - +
510C ILE* 1.3 93.3 - - + +
512C GLN* 1.3 59.5 + - - +
513C ARG 3.4 0.4 - - - -
518C HIS* 3.6 37.2 + - - -
529C VAL* 6.4 0.2 - - - +
531C ALA* 4.6 12.4 - - + +
2415C GOL 5.9 0.2 - - - -
1911J HIS* 4.0 24.8 + + - -
1923J SER* 3.7 31.6 + - - +
1924J GLN* 4.6 13.4 - - + +
1929J VAL* 4.7 9.2 - - + +
2412J GOL 2.6 41.5 + - - +
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Residues in contact with GLN 512 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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509C ASN* 3.0 26.1 + - - +
511C HIS* 1.3 76.5 - - - +
513C ARG* 1.3 65.6 + - + +
1923J SER 3.7 8.7 - - - +
1924J GLN* 3.3 30.1 + - - +
1925J ARG* 3.5 9.5 + - - +
1926J ALA 3.0 26.3 + - - -
1927J ASP* 4.8 2.6 - - - +
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Residues in contact with ARG 513 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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424C GLN* 4.9 7.3 + - - +
427C ILE* 4.6 17.5 - - - +
428C TYR* 2.6 37.0 + - - -
508C SER* 3.1 33.9 + - - -
509C ASN 3.5 12.8 - - - +
510C ILE* 3.1 13.5 + - - +
512C GLN* 1.3 86.0 - - + +
514C GLU* 1.3 79.4 + - - +
515C PRO* 3.6 2.1 - - - +
517C ARG* 4.2 31.1 - - + +
518C HIS* 2.9 17.6 + - - -
560C CA2 4.2 10.5 + - - +
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il