Contacts of the helix formed by residues 274 - 280 (chain K) in PDB entry 3STJ
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 SER 274 (chain K).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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241K LEU* 5.3 1.1 - - - -
242K LEU 3.7 8.7 - - - -
243K GLY* 3.6 21.0 + - - -
271K LEU* 2.6 26.5 + - - -
272K PRO 3.3 2.4 + - - -
273K GLY* 1.3 81.2 - - - +
275K GLY* 1.3 63.8 + - - +
276K SER 3.6 2.4 + - - -
277K ALA 3.2 12.8 + - - -
278K LYS* 3.1 24.9 + - - +
332K ASP* 3.4 15.5 - - - -
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Residues in contact with GLY 275 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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242K LEU 4.4 0.4 - - - -
274K SER* 1.3 71.3 - - - +
276K SER* 1.4 56.4 + - - +
278K LYS* 3.6 12.2 + - - +
279K ALA* 2.9 30.8 + - - +
329K VAL* 3.5 9.5 - - - +
330K THR* 3.4 27.5 + - - -
332K ASP* 2.9 17.4 + - - -
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Residues in contact with SER 276 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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242K LEU* 2.8 35.2 + - - +
244K ILE* 3.4 32.4 - - - +
270K VAL* 3.8 7.2 - - - -
274K SER* 3.2 3.1 - - - -
275K GLY* 1.4 74.2 - - - +
277K ALA* 1.3 59.5 + - - +
279K ALA* 3.5 0.8 + - - -
280K GLY 3.2 3.8 + - - -
281K VAL* 2.8 43.5 + - - +
316K LEU* 4.9 0.2 - - - +
329K VAL* 3.5 11.0 - - - +
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Residues in contact with ALA 277 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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270K VAL* 3.5 11.8 - - + +
271K LEU 3.4 20.9 - - - +
272K PRO* 4.2 4.3 - - + -
273K GLY* 3.9 13.2 - - - +
274K SER* 3.2 11.3 + - - +
276K SER* 1.3 77.4 - - - +
278K LYS* 1.4 56.9 + - + +
280K GLY* 3.0 20.6 + - - -
281K VAL 4.6 2.8 - - - +
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Residues in contact with LYS 278 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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273K GLY* 3.4 28.9 + - - -
274K SER 3.1 19.9 + - - +
275K GLY* 3.7 8.5 - - - +
277K ALA* 1.4 75.9 - - + +
279K ALA* 1.3 60.3 + - - +
280K GLY* 3.5 0.9 + - - -
332K ASP* 4.9 6.3 + - - -
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Residues in contact with ALA 279 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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275K GLY 2.9 18.8 + - - +
276K SER 3.9 3.8 - - - +
277K ALA 3.3 0.4 - - - -
278K LYS* 1.3 75.3 - - - +
280K GLY* 1.3 57.9 + - - +
281K VAL 3.7 0.2 - - - -
327K VAL* 3.4 29.7 - - + +
328K GLU 3.3 26.5 - - - +
329K VAL* 3.8 9.2 - - + -
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Residues in contact with GLY 280 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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277K ALA 3.0 14.3 + - - -
278K LYS 3.2 1.4 + - - -
279K ALA* 1.3 78.8 - - - +
281K VAL* 1.3 59.4 + - - +
282K LYS* 3.3 18.6 - - - -
320K ARG* 2.7 30.3 + - - -
327K VAL* 5.2 2.5 - - - -
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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