Contacts of the helix formed by residues 272 - 277 (chain C) in PDB entry 5D0A
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 LEU 272 (chain C).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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92C ARG* 2.9 27.7 + - + +
93C ARG 3.6 9.9 - - - +
94C GLY* 3.3 30.3 - - - +
237C LEU* 3.8 24.7 - - + -
270C PRO 4.5 0.2 - - - +
271C LEU* 1.3 72.7 - - - +
273C LYS* 1.3 58.2 + - - +
275C LEU* 3.0 28.9 + - - +
276C LEU* 3.7 5.7 + - - +
304C ALA* 4.0 14.7 - - + +
307C ALA* 3.8 19.3 - - + -
308C LEU* 3.6 34.5 - - + -
311C PHE* 3.9 9.9 - - + -
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Residues in contact with LYS 273 (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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90C THR 4.1 18.6 + - - -
91C GLU* 4.7 8.0 + - - +
92C ARG* 4.9 4.0 + - + +
271C LEU* 4.8 0.2 - - - +
272C LEU* 1.3 72.5 - - + +
274C PRO* 1.3 71.4 - - + +
276C LEU* 3.1 29.8 + - + +
277C ALA* 4.3 2.4 + - - +
308C LEU* 4.3 13.5 - - + -
313C ASP* 4.0 14.8 - - - +
315C SER* 2.5 38.2 + - - +
316C ALA* 4.2 15.7 - - + -
319C GLU* 5.1 4.7 - - + +
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Residues in contact with PRO 274 (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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271C LEU* 3.6 37.9 - - + +
273C LYS* 1.3 93.1 - - + +
275C LEU* 1.3 61.3 + - + +
276C LEU 3.3 0.7 + - - -
277C ALA* 3.5 11.8 + - + +
278C ILE* 3.6 13.7 + - - +
286C LYS* 6.0 4.0 - - - +
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Residues in contact with LEU 275 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
237C LEU* 3.7 29.8 - - + -
270C PRO* 4.0 8.1 - - + -
271C LEU 3.7 16.8 - - - +
272C LEU* 3.0 12.7 + - - +
274C PRO* 1.3 75.9 - - + +
276C LEU* 1.3 59.3 + - - +
277C ALA 3.2 0.8 + - - -
278C ILE* 3.7 19.6 - - + +
283C PHE* 5.4 1.8 - - + -
287C PHE* 3.9 31.9 - - + -
300C ILE* 4.1 17.5 - - + -
301C GLN* 3.0 33.7 + - + +
304C ALA* 4.1 20.0 - - + -
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Residues in contact with LEU 276 (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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272C LEU 4.2 5.4 - - - +
273C LYS* 3.1 18.2 + - + +
275C LEU* 1.3 79.1 - - - +
277C ALA* 1.3 58.7 + - - +
301C GLN* 3.6 14.1 + - - +
304C ALA* 4.6 4.3 - - + -
305C ILE* 3.6 35.4 - - + +
308C LEU* 3.6 32.1 - - + -
316C ALA* 4.7 3.8 - - + -
319C GLU* 3.5 31.0 - - + -
320C LEU* 4.1 13.7 - - + -
323C LEU* 3.5 35.2 - - + +
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Residues in contact with ALA 277 (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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273C LYS 5.4 1.8 - - - +
274C PRO* 3.5 7.0 + - + +
275C LEU 3.2 0.4 - - - -
276C LEU* 1.3 80.0 - - + +
278C ILE* 1.3 63.6 + - - +
279C SER* 3.5 3.3 + - - -
282C GLU* 5.2 0.3 - - - +
301C GLN* 4.6 1.1 - - - +
319C GLU* 4.1 17.0 - - - +
323C LEU* 5.6 0.7 - - - -
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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